What is reflection ???????
The bouncing of light off a mirror surface is called reflection.
Types of reflection?????
There are two types of reflection --regular reflection , diffuse reflection.
--When a parallel beam of light hits a smooth surface,it would be reflected as a parallel beam .This is called regular reflection.
--When a beam of light hits a rough surface,the individual rays are reflectedin different directions,then no image formed .This types of reflection is called diffuse reflection.
Uses of reflection of light,examples?
Uses of plane mirrors -----
—— the rear of a view mirror of a car can helps to see traffic behind the car.
——plane mirrors on walls makes a room brighter.
——people use plane mirrors to check their appearance.
Uses of curved mirrors----
——security mirrors are used in shops.
——blind corner mirrors helped driver to see objects around the corner.
——a concave mirror is used to reflect light into microscope.
Acknowledgements:
----Explore your world with science discovery 2
-----http://images.google.cn/imgres?imgurl=http://id.mind.net/~zona/mstm/physics/light/rayOptics/reflection/r1.jpg&imgrefurl=http://id.mind.net/~zona/mstm/physics/light/rayOptics/reflection/reflection1.html&h=300&w=400&sz=14&hl=zh-CN&start=17&um=1&tbnid=vcnBWStV9c6jCM:&tbnh=93&tbnw=124&prev=/images%3Fq%3Dreflection%2Bof%2Blight%26um%3D1%26complete%3D1%26hl%3Dzh-CN%26rlz%3D1T4XNLA_zh-CNSG277SG277%26sa%3DX
Showing posts with label reflection. Show all posts
Showing posts with label reflection. Show all posts
Friday, June 20, 2008
Reflection of Light by 2E2 Zin Win
Reflection on a mirror surface.
I have learnt that reflection is the bouncing off light after hitting a mirror surfaces.
There are two type of reflection the 1st one is regular reflection and 2nd is the diffused reflection. Regular reflection is made out of a parallel beam of light which bounce off a smooth surface and an image is form while the diffuse reflection reflects on a rough surface the ray is reflected in different direction and no image is form.
The angle of incidence is equal to the angles of reflection in the plane mirror
Properties of plane mirror:
Virtual
Upright
Same size as the object
Laterally inverted
Uses of plane mirror :
helps a driver see the traffic behind ,
help a person check appearance
make a room bigger
periscope are made of two plane mirrors to see over obstacles
Convex mirrors from upright image that is always smaller than the object. They allow many things to be seen
Concave mirrors formed upright magnified images if the object is close to the mirror. If the image is further away, the image is inverted
I have learnt that reflection is the bouncing off light after hitting a mirror surfaces.
There are two type of reflection the 1st one is regular reflection and 2nd is the diffused reflection. Regular reflection is made out of a parallel beam of light which bounce off a smooth surface and an image is form while the diffuse reflection reflects on a rough surface the ray is reflected in different direction and no image is form.
The angle of incidence is equal to the angles of reflection in the plane mirror
Properties of plane mirror:
Virtual
Upright
Same size as the object
Laterally inverted
Uses of plane mirror :
helps a driver see the traffic behind ,
help a person check appearance
make a room bigger
periscope are made of two plane mirrors to see over obstacles
Convex mirrors from upright image that is always smaller than the object. They allow many things to be seen
Concave mirrors formed upright magnified images if the object is close to the mirror. If the image is further away, the image is inverted
Reflection of Light by 2E3 Siti Saiyidah Nafisah
I have learnt that reflection is the bouncing of light off a mirror. A plane mirror is a good reflector of light.
When a ray of light strikes the mirror at a right angle, it is reflected along the same path, called the normal. When a ray of light hits a plane mirror at an angle to the normal (called the angle of incidence), it is reflected at an equal angle but on the opposite side of the normal (angle of reflection). These two angles are always equal no matter how light rays strike the mirror. These are called The Law of Reflection.
In a plane mirror, the image is upright and of the same size as the object. In a plane mirror, the image lies as far behind the mirror as the object is in front of the mirror. Mirrors turn images around from left to right. Hence, in a plane mirror, an image is laterally inverted. An image that cannot be formed on a screen is called a virtual image. In a plane mirror, the image formed is always a virtual image.
There are two types of reflection- Regular reflection and Diffuse reflection.
Textbook Resource: Science Txtbk (pg119-121)
When a ray of light strikes the mirror at a right angle, it is reflected along the same path, called the normal. When a ray of light hits a plane mirror at an angle to the normal (called the angle of incidence), it is reflected at an equal angle but on the opposite side of the normal (angle of reflection). These two angles are always equal no matter how light rays strike the mirror. These are called The Law of Reflection.
In a plane mirror, the image is upright and of the same size as the object. In a plane mirror, the image lies as far behind the mirror as the object is in front of the mirror. Mirrors turn images around from left to right. Hence, in a plane mirror, an image is laterally inverted. An image that cannot be formed on a screen is called a virtual image. In a plane mirror, the image formed is always a virtual image.
There are two types of reflection- Regular reflection and Diffuse reflection.
Textbook Resource: Science Txtbk (pg119-121)
Reflection of Light by 2E3 Elson Yeo
What is reflection of light?
When you look into a mirror, you see a picture of yourself. What you see is called an image. The image in a mirror is formed when light rays bounce off the mirror and travel to your eyes. This bouncing of light off a mirror is called reflection.
A flat mirror, called a plane mirror, is a good reflector of light. When a ray of light strikes the mirror at a right angle, it is reflected along the same path.
Scientists call this line the normal. When a ray of light hits a plane mirror at an angel to the normal, called the angel of incidence, it is reflected at an equal angle but on the opposite side of the normal, the angel of reflection. These two opposite side of the normal, the angle of reflection. The two angels are always equal no matter how light rays strike the mirror.
This generalization is called the law of reflection.
When does it happen?
When a ray of light hits a surface, it bounces off or reflects and then reaches our eyes. This phenomenon by which a ray of light changes the direction of propagation when it strikes a boundary between different media through which it cannot pass is described as the reflection of light
Types of reflection
There are two types of reflection – regular reflection and diffuse reflection.
When a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam. This is called regular reflection. An image is formed with regular reflection. That is, when we look at a smooth surface, we can see an image.
Most surfaces are actually quite rough. When a beam of light hits a rough surface, the individual rays are reflected in different directions. So no image is formed. This type of reflection is called diffuse reflection.
Uses of reflection of light and examples?
Convex mirrors are often used in shops as security mirrors because of the type of image produced by that mirror. The image is smaller but shows a wide angle view of the shop.
Concave mirrors are often used in torch lights or in the headlights of cars. The light travels in all directions from the light globe towards the mirror behind it. The rays are then reflected by the mirror and they form a beam of light (a bundle of parallel rays).
http://www.tutorvista.com/content/science/science-ii/reflection-light/reflection-light.php
http://www1.curriculum.edu.au/sciencepd/readings/ligh_reflection.htm
Textbook Page 119 , 121 & 122
When you look into a mirror, you see a picture of yourself. What you see is called an image. The image in a mirror is formed when light rays bounce off the mirror and travel to your eyes. This bouncing of light off a mirror is called reflection.
A flat mirror, called a plane mirror, is a good reflector of light. When a ray of light strikes the mirror at a right angle, it is reflected along the same path.
Scientists call this line the normal. When a ray of light hits a plane mirror at an angel to the normal, called the angel of incidence, it is reflected at an equal angle but on the opposite side of the normal, the angel of reflection. These two opposite side of the normal, the angle of reflection. The two angels are always equal no matter how light rays strike the mirror.
This generalization is called the law of reflection.
When does it happen?
When a ray of light hits a surface, it bounces off or reflects and then reaches our eyes. This phenomenon by which a ray of light changes the direction of propagation when it strikes a boundary between different media through which it cannot pass is described as the reflection of light
Types of reflection
There are two types of reflection – regular reflection and diffuse reflection.
When a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam. This is called regular reflection. An image is formed with regular reflection. That is, when we look at a smooth surface, we can see an image.
Most surfaces are actually quite rough. When a beam of light hits a rough surface, the individual rays are reflected in different directions. So no image is formed. This type of reflection is called diffuse reflection.
Uses of reflection of light and examples?
Convex mirrors are often used in shops as security mirrors because of the type of image produced by that mirror. The image is smaller but shows a wide angle view of the shop.
Concave mirrors are often used in torch lights or in the headlights of cars. The light travels in all directions from the light globe towards the mirror behind it. The rays are then reflected by the mirror and they form a beam of light (a bundle of parallel rays).
http://www.tutorvista.com/content/science/science-ii/reflection-light/reflection-light.php
http://www1.curriculum.edu.au/sciencepd/readings/ligh_reflection.htm
Textbook Page 119 , 121 & 122
Reflection of Light by 2E2 Andre Lim
Topic: Reflection of light – i. What is reflection of light?
ii. When does it happen?
iii. Types of reflection
iv. Uses of reflection of light, examples?
Reflection is the bouncing of light off a mirror or mirror-like surface. Reflection is also the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated from.
A flat mirror called a plane mirror is a good reflector of light. A normal is formed when a ray of light strikes the mirror at a right angle.
-Reflection may even occur on water and clouds
Mainly, there are two types of reflection, specular and diffused.Light being reflected of a smooth surface is Specular. When light strikes this smooth surface, all the reflected rays are in line with each other. An image is formed.
Diffused reflection is reflection from a rough surface. The small bumps and irregularities on a rough surface will cause each of the light rays to reflect n different directions, thus no image is formed.
There are some uses of plane mirrors, for example, plane mirrors helps people to check their appearance, and see things at a certain angle which the eye cannot.
The use of curved mirrors is used to reflect light into microscope to amplify the image’s size and dentist can use it to magnify the image of a patient’s teeth.
Also, if you look place a screen behind the mirror, the image is not formed on the screen. An image that cannot be formed on a screen is known as a virtual image.
Acknowledgement: http://en.wikipedia.org/wiki/Reflection_(physics)#Laws_of_regular_reflection
Sec 2 Science Text Book
Pictures - http://en.wikipedia.org/wiki/Image:Crepuscular_Rays_in_ggp_14.jpg
ii. When does it happen?
iii. Types of reflection
iv. Uses of reflection of light, examples?
Reflection is the bouncing of light off a mirror or mirror-like surface. Reflection is also the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated from.
A flat mirror called a plane mirror is a good reflector of light. A normal is formed when a ray of light strikes the mirror at a right angle.
-Reflection may even occur on water and clouds
Mainly, there are two types of reflection, specular and diffused.Light being reflected of a smooth surface is Specular. When light strikes this smooth surface, all the reflected rays are in line with each other. An image is formed.
Diffused reflection is reflection from a rough surface. The small bumps and irregularities on a rough surface will cause each of the light rays to reflect n different directions, thus no image is formed.
There are some uses of plane mirrors, for example, plane mirrors helps people to check their appearance, and see things at a certain angle which the eye cannot.
The use of curved mirrors is used to reflect light into microscope to amplify the image’s size and dentist can use it to magnify the image of a patient’s teeth.
Also, if you look place a screen behind the mirror, the image is not formed on the screen. An image that cannot be formed on a screen is known as a virtual image.
Acknowledgement: http://en.wikipedia.org/wiki/Reflection_(physics)#Laws_of_regular_reflection
Sec 2 Science Text Book
Pictures - http://en.wikipedia.org/wiki/Image:Crepuscular_Rays_in_ggp_14.jpg
Reflection of Light by 2E3 Ying jie
The bouncing of light off a mirror is called reflection.
Law of reflection
The ray of light approaching the mirror is known as the incident ray .The ray of light which leaves the mirror is known as the reflected ray .
At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror, and this is called normal line.
The angle between the incident ray and the normal is known as the angle of incidence.
The angle between the reflected ray and the normal is known as the angle of reflection.
The law of reflection states that when a ray of light reflects off a surface THE ANGLE OF INCIDENCE = ANGLE OF REFLECTION .
Another law of reflection ,is Light travels in straight lines.
In a plane mirror ,
1. Image is Upright and of the same size of the object
2. Images lies as far behind the mirror as the object is in front of the mirror .
3. Image is laterally inverted .
4. image is always virtual image .
An image that cannot be formed on a screen is called VIRTUAL IMAGE.
Uses of the plane mirror,
Helps the driver to see the traffic behind , Makes room look bigger , Check their appearance .
Two types of reflection ,
Regular reflection – When a parallel beam of light hits a smooth surface , it is reflected as a parallel beam . An image is formed.
Diffuse reflection – When a beam of light hits the rough surface , individual rays are reflected in different directions. No image is formed .
Uses Of Curved mirrors ,
Convex Mirrors- Is a fish eye mirror or diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source.
Upright images that are smaller than object. By the same time it allows many things to be seen.
Uses of Convex Mirrors :
1.Camera phones use convex mirrors to allow the user correctly aim the camera while taking a self-portrait.
2.The passenger-side mirror on a car is typically a convex mirror. It gives a safety warning "Objects in mirror are closer than they appear", to warn the driver of the convex mirror's distorting effects on distance perception.
Concave mirrors – Upright magnified images if the object is close to the mirror . If it is further away , the image is inverted .
Uses of Concave Mirrors :
Dentist mirror magnifies the image of our teeth .
Used to reflect light into microscope.
Law of reflection
The ray of light approaching the mirror is known as the incident ray .The ray of light which leaves the mirror is known as the reflected ray .
At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror, and this is called normal line.
The angle between the incident ray and the normal is known as the angle of incidence.
The angle between the reflected ray and the normal is known as the angle of reflection.
The law of reflection states that when a ray of light reflects off a surface THE ANGLE OF INCIDENCE = ANGLE OF REFLECTION .
Another law of reflection ,is Light travels in straight lines.
In a plane mirror ,
1. Image is Upright and of the same size of the object
2. Images lies as far behind the mirror as the object is in front of the mirror .
3. Image is laterally inverted .
4. image is always virtual image .
An image that cannot be formed on a screen is called VIRTUAL IMAGE.
Uses of the plane mirror,
Helps the driver to see the traffic behind , Makes room look bigger , Check their appearance .
Two types of reflection ,
Regular reflection – When a parallel beam of light hits a smooth surface , it is reflected as a parallel beam . An image is formed.
Diffuse reflection – When a beam of light hits the rough surface , individual rays are reflected in different directions. No image is formed .
Uses Of Curved mirrors ,
Convex Mirrors- Is a fish eye mirror or diverging mirror, is a curved mirror in which the reflective surface bulges toward the light source.
Upright images that are smaller than object. By the same time it allows many things to be seen.
Uses of Convex Mirrors :
1.Camera phones use convex mirrors to allow the user correctly aim the camera while taking a self-portrait.
2.The passenger-side mirror on a car is typically a convex mirror. It gives a safety warning "Objects in mirror are closer than they appear", to warn the driver of the convex mirror's distorting effects on distance perception.
Concave mirrors – Upright magnified images if the object is close to the mirror . If it is further away , the image is inverted .
Uses of Concave Mirrors :
Dentist mirror magnifies the image of our teeth .
Used to reflect light into microscope.
Reflection of Light by 2E3 Li Yanbing
1) WHAT IS REFLECTION OF LIGHT?
The bouncing of light off a mirror is called reflection.
2) WHEN DOES IT HAPPEN?
Reflection happen when the image in a mirror is formed when light rays bounce off the mirror and travel to your eyes.
3) TYPES OF REFLECTION
There are basically two types of reflection:
Regular Reflection
When a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam. This is called a REGULAR reflection.That is when we look at a smooth surface,we see an image.
Diffuse Reflection
When a beam of light hits a rough surface, the individual rays are reflected in different direction. So no image is formed. This type of reflection is called DIFFUSE reflection.
4) USE OF REFLECTION OF LIGHT; EXAMPLES.
There are many examples of the use of reflection of light.
The rear view mirror of a car helps drivers to see traffic behind the car.
The use of plane mirrors to check one’s appearance.
Periscopes are made of two plane mirrors which see over obstacles such as walls.
Mirrors used in double-deck buses to help the driver to see the passengers on the upper deck.
Sources:
Heyworth, Rex M. Explore Your World with Science Discovery 2.
Diagram obtained from <http://www.rebeccapaton.net/rainbows/rflctn.gif>
The bouncing of light off a mirror is called reflection.
2) WHEN DOES IT HAPPEN?
Reflection happen when the image in a mirror is formed when light rays bounce off the mirror and travel to your eyes.
3) TYPES OF REFLECTION
There are basically two types of reflection:
Regular Reflection
When a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam. This is called a REGULAR reflection.That is when we look at a smooth surface,we see an image.
Diffuse Reflection
When a beam of light hits a rough surface, the individual rays are reflected in different direction. So no image is formed. This type of reflection is called DIFFUSE reflection.
4) USE OF REFLECTION OF LIGHT; EXAMPLES.
There are many examples of the use of reflection of light.
The rear view mirror of a car helps drivers to see traffic behind the car.
The use of plane mirrors to check one’s appearance.
Periscopes are made of two plane mirrors which see over obstacles such as walls.
Mirrors used in double-deck buses to help the driver to see the passengers on the upper deck.
Sources:
Heyworth, Rex M. Explore Your World with Science Discovery 2.
Diagram obtained from <http://www.rebeccapaton.net/rainbows/rflctn.gif>
Reflection of Light by 2E4 Gao YanTing
Reflection is the bouncing of light off an object,when light falls on the object.
The laws of reflection :
The angle of incidence is equal to the angle of reflection.
The incident ray , the reflected ray and the normal at the point of incidence all lie on the same plane.
There are two types of reflection :
Regular reflection ---- a parallel beam of light is reflected as a parallel beam in the same direction to form clear images,occurs on smooth surfaces.
Diffused reflection ----- a parallel beam of light is reflected in different directions without forming any image,occurs on rough surfaces.
Uses of Plane Mirror
Help the driver to see traffic behind
Make a room look bigger
Check their appearance
Uses of Curved Mirrors
Convex --- Security mirrors are used in shops
Blind corner mirrors help drivers to see objects around the corner
Concave ---- Aconcave mirror is used to reflect light into the microscope
A dentist's mirror magnifies the image of your teeth.
From:Git it right
and Text book
The laws of reflection :
The angle of incidence is equal to the angle of reflection.
The incident ray , the reflected ray and the normal at the point of incidence all lie on the same plane.
There are two types of reflection :
Regular reflection ---- a parallel beam of light is reflected as a parallel beam in the same direction to form clear images,occurs on smooth surfaces.
Diffused reflection ----- a parallel beam of light is reflected in different directions without forming any image,occurs on rough surfaces.
Uses of Plane Mirror
Help the driver to see traffic behind
Make a room look bigger
Check their appearance
Uses of Curved Mirrors
Convex --- Security mirrors are used in shops
Blind corner mirrors help drivers to see objects around the corner
Concave ---- Aconcave mirror is used to reflect light into the microscope
A dentist's mirror magnifies the image of your teeth.
From:Git it right
and Text book
Reflection of Light by 2E4 Ding Ruxin
1.Reflection of light is very predictable. The Law of Reflection describes it simply as "The angle of incidence is equal to the angle of reflection."
2.Law of reflection: ' = where is the angle of incidence and ' is the reflected angle from the normal.
Yeah, that is great for flat surfaces but what about curved surfaces? It works the same way. Simply draw the tangent line to the point of the curve and reflect the light according to the tangent line.
There are actually two types of reflections: specular and diffused.
Specular reflection is reflection from a smooth surface. When light strikes this smooth surface, all the reflected rays are in line with each other.
Diffused reflection is reflection from a rough surface. The small bumps and irregularities on a rough surface will cause each of the light rays to reflect in different directions, all following the law of reflection of course.
Any incident ray traveling parallel to the principal axis on the way to a concave mirror will pass through the focal point upon reflection.
Any incident ray passing through the focal point on the way to a concave mirror will travel parallel to the principal axis upon reflection.
3 .Materials that reflect neutrons, for example beryllium, are used in nuclear reactors and nuclear weapons. In the physical and biological sciences, the reflection of neutrons off atoms within a material is commonly used to determine its internal structures.
4. http://library.thinkquest.org/27356/p_reflection.htm
2.Law of reflection: ' = where is the angle of incidence and ' is the reflected angle from the normal.
Yeah, that is great for flat surfaces but what about curved surfaces? It works the same way. Simply draw the tangent line to the point of the curve and reflect the light according to the tangent line.
There are actually two types of reflections: specular and diffused.
Specular reflection is reflection from a smooth surface. When light strikes this smooth surface, all the reflected rays are in line with each other.
Diffused reflection is reflection from a rough surface. The small bumps and irregularities on a rough surface will cause each of the light rays to reflect in different directions, all following the law of reflection of course.
Any incident ray traveling parallel to the principal axis on the way to a concave mirror will pass through the focal point upon reflection.
Any incident ray passing through the focal point on the way to a concave mirror will travel parallel to the principal axis upon reflection.
3 .Materials that reflect neutrons, for example beryllium, are used in nuclear reactors and nuclear weapons. In the physical and biological sciences, the reflection of neutrons off atoms within a material is commonly used to determine its internal structures.
4. http://library.thinkquest.org/27356/p_reflection.htm
Reflection of Light by 2E4 Zhang Ling
What is reflection?
1．Reflection is the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.
Reflection of light may be specular (that is, mirror-like) or diffuse (that is, not retaining the image, only the energy) depending on the nature of the interface. Furthermore, if the interface is between dielectric-conductor or dielectric-dielectric media, the phase of the reflected wave may or may not be inverted, respectively.
2．（1）Reflection of light
In the diagram, a light ray PO strikes a vertical mirror at point O, and the reflected ray is OQ. By projecting an imaginary line through point O perpendicular to the mirror, known as the normal, we can measure the angle of incidence, θi and the angle of reflection, θr. The law of reflection states that θi = θr, or in other words, the angle of incidence equals the angle of reflection.
In fact, reflection of light may occur whenever light travels from a medium of a given refractive index into a medium with a different refractive index.
（2）Laws of regular reflection
If the reflecting surface is very smooth, the reflection of light that occurs is called specular or regular reflection. The laws of reflection are as follows:
The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.
The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.
（3）Diffuse reflection
When light strikes a rough or granular surface, it bounces off in all directions due to the microscopic irregularities of the interface. Thus, an 'image' is not formed. This is called diffuse reflection.
3．Light bounces exactly back in the direction from which it came due to a nonlinear optical process. In this type of reflection, not only the direction of the light is reversed, but the actual wavefronts are reversed as well. A conjugate reflector can be used to remove aberrations from a beam by reflecting it and then passing the reflection through the aberrating optics a second time.
4．http://en.wikipedia.org/wiki/Reflection_%28physics%29#Reflections
1．Reflection is the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.
Reflection of light may be specular (that is, mirror-like) or diffuse (that is, not retaining the image, only the energy) depending on the nature of the interface. Furthermore, if the interface is between dielectric-conductor or dielectric-dielectric media, the phase of the reflected wave may or may not be inverted, respectively.
2．（1）Reflection of light
In the diagram, a light ray PO strikes a vertical mirror at point O, and the reflected ray is OQ. By projecting an imaginary line through point O perpendicular to the mirror, known as the normal, we can measure the angle of incidence, θi and the angle of reflection, θr. The law of reflection states that θi = θr, or in other words, the angle of incidence equals the angle of reflection.
In fact, reflection of light may occur whenever light travels from a medium of a given refractive index into a medium with a different refractive index.
（2）Laws of regular reflection
If the reflecting surface is very smooth, the reflection of light that occurs is called specular or regular reflection. The laws of reflection are as follows:
The incident ray, the reflected ray and the normal to the reflection surface at the point of the incidence lie in the same plane.
The angle which the incident ray makes with the normal is equal to the angle which the reflected ray makes to the same normal.
（3）Diffuse reflection
When light strikes a rough or granular surface, it bounces off in all directions due to the microscopic irregularities of the interface. Thus, an 'image' is not formed. This is called diffuse reflection.
3．Light bounces exactly back in the direction from which it came due to a nonlinear optical process. In this type of reflection, not only the direction of the light is reversed, but the actual wavefronts are reversed as well. A conjugate reflector can be used to remove aberrations from a beam by reflecting it and then passing the reflection through the aberrating optics a second time.
4．http://en.wikipedia.org/wiki/Reflection_%28physics%29#Reflections
Reflection of Light by 2E2 Elizabeth Lee
Topic: Reflection of light – i. What is reflection of light?
ii. When does it happen?
iii. Types of reflection
iv. Uses of reflection of light, examples?
I have learnt that reflection is the bouncing of light off a mirror surface.
Reflection is also the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated.
There are two types of reflection, specular and diffused.
Specular reflection is reflection from a smooth surface. When light strikes this smooth surface, all the reflected rays are in line with each other. An image is formed.
Diffused reflection is reflection from a rough surface. The small bumps and irregularities on a rough surface will cause each of the light rays to reflect n different directions. No image is formed.
Characteristics of Reflection are that the image formed is the same size and shape of the object. It is also a virtual image.
Acknowledgement: http://en.wikipedia.org/wiki/Reflection_(physics)#Laws_of_regular_reflection
http://library.thinkquest.org/27356/p_reflection.htm
ii. When does it happen?
iii. Types of reflection
iv. Uses of reflection of light, examples?
I have learnt that reflection is the bouncing of light off a mirror surface.
Reflection is also the change in direction of a wave front at an interface between two different media so that the wave front returns into the medium from which it originated.
There are two types of reflection, specular and diffused.
Specular reflection is reflection from a smooth surface. When light strikes this smooth surface, all the reflected rays are in line with each other. An image is formed.
Diffused reflection is reflection from a rough surface. The small bumps and irregularities on a rough surface will cause each of the light rays to reflect n different directions. No image is formed.
Characteristics of Reflection are that the image formed is the same size and shape of the object. It is also a virtual image.
Acknowledgement: http://en.wikipedia.org/wiki/Reflection_(physics)#Laws_of_regular_reflection
http://library.thinkquest.org/27356/p_reflection.htm
Reflection of Light by 2E3 Rachel Ng
The ray of light which strikes the surface is called the incident ray.
The ray of light which leaves the surface is called the reflected ray.
A line perpendicular to the surface is imagined at the point of reflection. This line is called a normal. And when a ray of light strikes the mirror at a right angle,it is reflected along the same path.
When a ray of light hits a plane mirror at an angle to the normal(called the angle of incident), it is reflected at an equal angle but on the opposite side of the normal(angle of reflection).these two angles are always equal no matter how light rays strike the mirror.
A flat mirror,called plane mirror,is a good reflector of light.
WHAT IS REFLECTION OF LIGHT??
ANS:Reflection is the bouncing off light after hitting a mirror surface.
WHEN DOES IT HAPPEN?
ANS:it happen when the light travel and bounce off after hitting a mirror surface:)
IMAGES IN A PLANE MIRROR
In a plane mirror:
The image is upright
And the image is also of the same size as the object.
The image lies far behind the mirror
But the object is in front of the mirror.
The image is also laterally inverted in a plane mirror.
(Laterally inverted = opposite side)
The image formed is always a virtual image.
(virtual = cannot be capture on screen)
TYPE OF REFLECTION
REGULAR REFLECTION!!
When a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam. This is called regular reflection. An image is formed with regular reflection. That is. When we look at a smooth surface,we can see an image.
Regular reflection takes place when a parallel beam of light strikes a smooth polished surface and it is reflected back as a parallel beam of light. Reflection from mirror and metallic surface are example of regular reflection.
Regular reflection
On a smooth surface,a parallel beam of light is reflected as a parallel beam.
An image is formed.
DIFFUSE REFLECTION!!
Most surfaces, are usually quite rough. When a beam of light hits a rough surface,the individual rays are reflected in different directions. So no image is formed. This type of reflection is called diffuse reflection.
Diffuse reflection or irregular reflection takes place when a parallel beam of light strikes a rough surface and it is reflected back in different random directions reflected from object such as trees and are example of diffused reflection.
Diffuse reflection
On a rough surface.
A parallel beam of light is reflected as individual rays reflected in different directions
No image is formed.
USES OF PLANE MIRRORS!!
uses of plane mirror:
Help a driver see the traffic behind.
Helps a person check appearance.
Makes s room appear bigger.
USES OF CURVE MIRROR!!
Curve surface can also act as mirrors. Curved mirror can be convex(like the back of a spoon) or concave(like the front of a spoon).The images formed by these mirror are different from those formed by plane mirror. Convex mirror form upright images that are always smaller than the object. They also have large “field of view” ,that is, they allow many thing to be seen.
USES OF CURVE MIRROR!!
Convex mirrors from upright image that are always smaller than the object, They allow many thing to be seen.
Concave mirror form upright magnified if the object is close to the mirror. If the image is further away,the image is inverted.
RESOURSE!!
http://www.google.com.sg/search?hl=en&q=convex+mirror&meta=
http://www.google.com/
Explore your world with science discovery 2 textbook
Reflection of Light by 2E3 Syafiq
I learnt the definition of reflection, the law of reflection, the characteristic of the image formed in a mirror, the different types of reflection, the uses of plain mirrors and curved mirrors and drawing the reflection of diagram during physics lessons.
Definition of reflection: When light rays bounce off the mirror and travel to your eyes.
The law of reflection: The angle of incidence is equal to the angle of reflection.
The characteristic of the image formed in a mirror:
- The image formed in a plane mirror is virtual, laterally inverted, upright, same size as the object and the image lies far behind the mirror as the object is in front of the mirror.
The different types of reflection:
( Regular reflection )
When a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam.
( Diffuse reflection ) When a beam of light hits a rough surface, the individual rays are reflected in different direction and no image is formed.
Uses of plane mirror: It helps the driver to see traffic behind the car, it make a room look bigger and to check the person appearance.
Uses of curved mirror:
(Convex mirror) Convex mirrors form upright images that are always smaller than the object. (e.g. security mirrors are used in shop)
(Concave mirror) Concave mirrors form upright magnified images if the object is close to the mirror. If the object is further away, the image is inverted. (e.g. tool used by dentist)
Resources: http://images.google.com.sg/ and Science Discovery Science textbook 2.
Thursday, June 19, 2008
Reflection of Light by 2E3 Zay Nyein
I have learn the definition of reflection, the law of reflection , the characteristic of the image formed in mirror, the different types of reflection, the uses of plane mirror and the two different types of curved mirror.
Reflection is the bouncing of light off a mirror and travel to your eyes. The law of reflection: The angle of incidence is equal to the angle of reflection. The image formed in a plane mirror is virtual, upright, laterally inverted, same size as the object and as far behind the mirror as the object is in front of the mirror.
There are two different types of reflection (1) Regular reflection and (2) Diffuse reflection. When the parallel beam of light hits a smooth surface, it is reflected as a parallel beam and the image is formed is called Regular reflection. When a beam of light hits a rough surface, the individual rays are reflected in different directions and the image is not formed is called Diffuse reflection.
The three uses of plane mirror
(1) helps the driver to check the traffic behind
(2) makes a room look bigger and
(3) check the person appearance.
The two different types of curved mirror (1) Concave mirror and (2) Convex mirror.
Concave mirror form upright magnified images if the object is close to the mirror. If the object is further away, the image is inverted e.g. used by dentist to check the teeth.
Convex mirror form upright images that always smaller than the object e.g. security mirrors are used in shops.
Resources
http://images.google.com.sg/ and the Science Discovery 2 (Text book)
Resources
http://images.google.com.sg/ and the Science Discovery 2 (Text book)
Reflection of Light by 2E3 Jocelyn Lee
After my group and I finished doing the project we has chosen to do( reflection of light), i have learnt how to build good team work with my group members.
I know understand and know more about the reflection of light through this project, such as the law of reflection.
The behavior of the light as it reflects would follow a predictable law known as the law of reflection. Diagrams are use to illustrates the law of reflection. An example of it is:
The ray of light which strikes on the surface is called the incident ray. The ray of light which leaves the surface is called the reflected ray. A line perpendicular to the surface is imagined at the point of reflection the line is called a normal. The angle between the incident ray and the normal is called the angle of incidence. The angle between the reflected ray and the normal is called the angle of reflection.
To summarize,THE ANGLE OF REFLECTION IS EQUAL TO THE ANGLE OF INCIDENCE.
Resources: http://id.mind.net/~zona/mstm/physics/light/rayOptics/reflection/reflection1.html
I know understand and know more about the reflection of light through this project, such as the law of reflection.
The behavior of the light as it reflects would follow a predictable law known as the law of reflection. Diagrams are use to illustrates the law of reflection. An example of it is:
The ray of light which strikes on the surface is called the incident ray. The ray of light which leaves the surface is called the reflected ray. A line perpendicular to the surface is imagined at the point of reflection the line is called a normal. The angle between the incident ray and the normal is called the angle of incidence. The angle between the reflected ray and the normal is called the angle of reflection.
To summarize,THE ANGLE OF REFLECTION IS EQUAL TO THE ANGLE OF INCIDENCE.
Resources: http://id.mind.net/~zona/mstm/physics/light/rayOptics/reflection/reflection1.html
Reflection of Light by 2E4 Wang Si Qian
flat mirror called a pane mirror, is a good reflector of light. when a ray of light strikes the mirror at a right angle ,it is reflected along the same path. Scientists call this line normal. When a ray of light hits a plane mirror at an angle to the normal(called the angle of incidence),it is reflected at an equal angle but on the opposite side of the normal(the angle of reflection) .These two angles always are always equal no matter how light rays strikes the mirror. This generalization is called the law of reflection .
In a plane mirror, - the image is upright and of the same size as the object
-the image lies as far behind the mirror as the object is in front of the mirror.
-an image is laterally inverted.
-the image formed is always a virtual image.
Type of reflection -regular reflection and diffuse reflection
Regular reflection:
-when a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam.
-an image is formed.
Diffuse reflection:
-when a beam of light hits a rough surface, the individual rays are reflected in different directions.
-no image is formed.
The use of plane mirror: -people use plane mirrors to check their appearance.
-plane mirrors on walls make the room bigger.
-the rear view mirror of a car helps the diver to see traffic behind the car.
-two plane mirrors are used in a periscope to reflect and change the direction of light.
-a telescope uses mirrors to produce very clear image.
Laws in this topic
–light travels in straight lines.
-for reflection in a plane mirror, the angle of incidence is equal to the angle of reflection.
-the angle of incidence=the angle of reflection.
Resources are from: textbook and www.treemo.com/users/somniumfate/channel/item/62506
In a plane mirror, - the image is upright and of the same size as the object
-the image lies as far behind the mirror as the object is in front of the mirror.
-an image is laterally inverted.
-the image formed is always a virtual image.
Type of reflection -regular reflection and diffuse reflection
Regular reflection:
-when a parallel beam of light hits a smooth surface such as a plane mirror, it is reflected as a parallel beam.
-an image is formed.
Diffuse reflection:
-when a beam of light hits a rough surface, the individual rays are reflected in different directions.
-no image is formed.
The use of plane mirror: -people use plane mirrors to check their appearance.
-plane mirrors on walls make the room bigger.
-the rear view mirror of a car helps the diver to see traffic behind the car.
-two plane mirrors are used in a periscope to reflect and change the direction of light.
-a telescope uses mirrors to produce very clear image.
Laws in this topic
–light travels in straight lines.
-for reflection in a plane mirror, the angle of incidence is equal to the angle of reflection.
-the angle of incidence=the angle of reflection.
Resources are from: textbook and www.treemo.com/users/somniumfate/channel/item/62506
Reflection of Light by 2E4 Fang Shu Yang
When reflection of light photoemission to two kind of different natures, then has part of light, from the interface shoots in the original nature the phenomenon, is called the reflection of light. law of reflection:
(1) incident ray, reflect rays and normal on identical plane mirror, and incident ray, reflect rays in normal both sides.
(2) the incidence angle is equal to the reflection angle. the surface smooth object, easy to form the light the regular reflection, forms the dazzling glare, instead looks at not the clear object. in the usual situation may distinguish shape and the existence the object, therefore is as a result of the light diffusion. after sunset, can see the object temporarily, is therefore because in the air the dust causes the light diffusion. Regardless of being the regular reflection or the diffuse reflection, must observe the law of reflection。
When the light shines after the object on, some part of light have been absorbed (with light frequency related), other cannot the light which absorbs be the reflected light. The reflection divides into the regular reflection and the diffuse reflection.
(1) incident ray, reflect rays and normal on identical plane mirror, and incident ray, reflect rays in normal both sides.
(2) the incidence angle is equal to the reflection angle. the surface smooth object, easy to form the light the regular reflection, forms the dazzling glare, instead looks at not the clear object. in the usual situation may distinguish shape and the existence the object, therefore is as a result of the light diffusion. after sunset, can see the object temporarily, is therefore because in the air the dust causes the light diffusion. Regardless of being the regular reflection or the diffuse reflection, must observe the law of reflection。
When the light shines after the object on, some part of light have been absorbed (with light frequency related), other cannot the light which absorbs be the reflected light. The reflection divides into the regular reflection and the diffuse reflection.
Reflection of Light by 2E3 Kho Wei Xian
After the first semester, I have learnt a lot of thing about the reflection of light. The law of reflection, the types of reflection, uses of mirrors and image in a plane mirror.
Reflection is the bouncing off light after hitting a mirror surface. The reflection of light can be represented by the reflected diagram. A plane mirror is a good reflector of light. The ray of light approaching the mirror is known as the incident ray (labeled i in the diagram). The ray of light which leaves the mirror is known as the reflected ray (labeled r in the diagram). At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror. This line is known as a normal line. (labelled N in the diagram)
The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection. When a ray of light hit a plane mirror and when the light is reflected, the angle of incidence and the angle of reflection is the same. This is called the law of reflection.
I also learnt that in a plane mirror,
The image formed is upright and it is the same size as the object,
The image lies far behind the mirror as the object is in front of the mirror,
The image is laterally inverted
The image is virtual(It cannot be captured on the screen)
There are two types of reflection, Regular and Diffuse reflection.
Regular reflection is when parallel beam of light hits a smooth surface and is reflected as a parallel beam.
Diffuse reflection is when a beam of light hits a rough surface, the individual ray are reflected in different directions. There is image formed in Regular reflection and there is no image formed in Diffuse reflection.
I also learnt the uses of the mirrors. There are three types of mirrors, Plane mirrors, and Convex, Concave mirrors which are under Curved mirrors.
Plane mirrors helps the driver to see traffic behind, make a room appear bigger and let a person check their appearance.
Convex mirrors form upright images that are always smaller than the object. They also allow many things to be seen. Convex mirrors are used in shops for security reasons, and also helps the drivers to see object around the corner.
Concave mirrors form upright magnified images if the object is close to the mirror. The image I inverted if the object is further away. Concave mirrors are used to reflect light into a microscope and help the dentists to check teeth conditions.
I have also found out that other than Regular and Diffuse reflection, there are other types of reflection such as Retro reflection, Complex conjugate reflection, Neutron reflection, Sound reflection, Seismic reflection.
Acknowledgements: http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/refln/u13l1c.html
http://en.wikipedia.org/wiki/Reflection_(physics)
Explore Your World With Science Discovery 2
Done By: KHO WEI XIAN (25)
Reflection is the bouncing off light after hitting a mirror surface. The reflection of light can be represented by the reflected diagram. A plane mirror is a good reflector of light. The ray of light approaching the mirror is known as the incident ray (labeled i in the diagram). The ray of light which leaves the mirror is known as the reflected ray (labeled r in the diagram). At the point of incidence where the ray strikes the mirror, a line can be drawn perpendicular to the surface of the mirror. This line is known as a normal line. (labelled N in the diagram)
The normal line divides the angle between the incident ray and the reflected ray into two equal angles. The angle between the incident ray and the normal is known as the angle of incidence. The angle between the reflected ray and the normal is known as the angle of reflection. When a ray of light hit a plane mirror and when the light is reflected, the angle of incidence and the angle of reflection is the same. This is called the law of reflection.
I also learnt that in a plane mirror,
The image formed is upright and it is the same size as the object,
The image lies far behind the mirror as the object is in front of the mirror,
The image is laterally inverted
The image is virtual(It cannot be captured on the screen)
There are two types of reflection, Regular and Diffuse reflection.
Regular reflection is when parallel beam of light hits a smooth surface and is reflected as a parallel beam.
Diffuse reflection is when a beam of light hits a rough surface, the individual ray are reflected in different directions. There is image formed in Regular reflection and there is no image formed in Diffuse reflection.
I also learnt the uses of the mirrors. There are three types of mirrors, Plane mirrors, and Convex, Concave mirrors which are under Curved mirrors.
Plane mirrors helps the driver to see traffic behind, make a room appear bigger and let a person check their appearance.
Convex mirrors form upright images that are always smaller than the object. They also allow many things to be seen. Convex mirrors are used in shops for security reasons, and also helps the drivers to see object around the corner.
Concave mirrors form upright magnified images if the object is close to the mirror. The image I inverted if the object is further away. Concave mirrors are used to reflect light into a microscope and help the dentists to check teeth conditions.
I have also found out that other than Regular and Diffuse reflection, there are other types of reflection such as Retro reflection, Complex conjugate reflection, Neutron reflection, Sound reflection, Seismic reflection.
Acknowledgements: http://www.glenbrook.k12.il.us/GBSSCI/PHYS/Class/refln/u13l1c.html
http://en.wikipedia.org/wiki/Reflection_(physics)
Explore Your World With Science Discovery 2
Done By: KHO WEI XIAN (25)
Reflection of Light by 2E4 Chanita
Light of "Reflection": is "a ray of light bounces off of a mirror.
Types of reflection
Regular Reflection
- with surfaces so smooth are smaller than the wavelength of light, the law of reflection applies on a large scale. All the light traveling in one direction and reflecting from the mirror is reflected in one direction.
Diffuse reflection
– with light being reflected in all directions. If the irregularities on the surface of an object are larger than the wavelength of light, which is usually the case, the light reflects off in all directions.
Uses of reflection of light
Convex mirrors are often used in shops as security mirrors because of the type of image produced by that mirror. The image is smaller but shows a wide angle view of the shop.
Concave mirrors are often used in torch lights. The light travels in all directions from the light globe towards the mirror behind it. The rays are then reflected by the mirror and they form a beam of light (a bundle of parallel rays).
Facts:
1. The woman's image is as far behind the flat mirror as she is in front of it. >>>
2.The "woman" in the mirror is combing her hair with her left hand.>>>
When the water is still, reflection is specular. The image blurs when the water is rough
Images in convex mirrors are always smaller
Images in concave mirrors are always bigger
Do You Know that:?
*Light slows down, bends toward the normal and has a shorter wavelength when it enters a higher (n) value medium.
*The Rainbow is a reflection of perfect balance of the physical world
Thinking Time:
All you brainiacs out there, if light reflect off an object... then what colour is the object itself? If white light contains all the colours of the visible spectrum, and say, it reflects off of an object that is red, the object itself absorbs all the colours of the spectrum except red. So then is that object in fact red? Or is it every other colour except red? What about a 'black’ light. If the color black lacks all colours, why then when you shine a black light on an object, it appears as its 'negative' color, such as reds or yellows appear green. Not all colors but many colors exhibit this phenomenon. An object that is "white' in color glows almost fluorescent in black light... What is it exactly are we seeing when we see the 'colour' of an object?
Answer: The colour we are seeing is in fact the light being reflected off the object as well as the reception of our rod and cone cells in the retina of the eye. The cone cells are the ones that respond to different colors. There are groups of cone cells that respond to red, or blue or yellow so basically what we 'perceive' as color depends on both these factors. And really, perception is on an individual basis. Theoretically, what you perceive as red, I may perceive as blue. It is very much possible. Colours, I think are an illusion that we create with our brains. They are just that. They themselves have no 'color'. Its like our brain receives this upside down weird black and white photo, and puts it upright, colours it up to make it attractive. And that is what we see as 'beautiful' and colourful. As for reality...that, we may never know.
Game: http://www.phy.ntnu.edu.tw/oldjava/optics/mirrorgame_e.html
Resources:
www.yahoo.com/question/index?qid=20070819060134AAanM50 - 47k –
http://www.google.co.th/
Types of reflection
Regular Reflection
- with surfaces so smooth are smaller than the wavelength of light, the law of reflection applies on a large scale. All the light traveling in one direction and reflecting from the mirror is reflected in one direction.
Diffuse reflection
– with light being reflected in all directions. If the irregularities on the surface of an object are larger than the wavelength of light, which is usually the case, the light reflects off in all directions.
Uses of reflection of light
Convex mirrors are often used in shops as security mirrors because of the type of image produced by that mirror. The image is smaller but shows a wide angle view of the shop.
Concave mirrors are often used in torch lights. The light travels in all directions from the light globe towards the mirror behind it. The rays are then reflected by the mirror and they form a beam of light (a bundle of parallel rays).
Facts:
1. The woman's image is as far behind the flat mirror as she is in front of it. >>>
2.The "woman" in the mirror is combing her hair with her left hand.>>>
When the water is still, reflection is specular. The image blurs when the water is rough
Images in convex mirrors are always smaller
Images in concave mirrors are always bigger
Do You Know that:?
*Light slows down, bends toward the normal and has a shorter wavelength when it enters a higher (n) value medium.
*The Rainbow is a reflection of perfect balance of the physical world
Thinking Time:
All you brainiacs out there, if light reflect off an object... then what colour is the object itself? If white light contains all the colours of the visible spectrum, and say, it reflects off of an object that is red, the object itself absorbs all the colours of the spectrum except red. So then is that object in fact red? Or is it every other colour except red? What about a 'black’ light. If the color black lacks all colours, why then when you shine a black light on an object, it appears as its 'negative' color, such as reds or yellows appear green. Not all colors but many colors exhibit this phenomenon. An object that is "white' in color glows almost fluorescent in black light... What is it exactly are we seeing when we see the 'colour' of an object?
Answer: The colour we are seeing is in fact the light being reflected off the object as well as the reception of our rod and cone cells in the retina of the eye. The cone cells are the ones that respond to different colors. There are groups of cone cells that respond to red, or blue or yellow so basically what we 'perceive' as color depends on both these factors. And really, perception is on an individual basis. Theoretically, what you perceive as red, I may perceive as blue. It is very much possible. Colours, I think are an illusion that we create with our brains. They are just that. They themselves have no 'color'. Its like our brain receives this upside down weird black and white photo, and puts it upright, colours it up to make it attractive. And that is what we see as 'beautiful' and colourful. As for reality...that, we may never know.
Game: http://www.phy.ntnu.edu.tw/oldjava/optics/mirrorgame_e.html
Resources:
www.yahoo.com/question/index?qid=20070819060134AAanM50 - 47k –
http://www.google.co.th/
Reflection of Light by 2E4 HA SEONG EUN
Reflection of light occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where the light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool.
When does it happen
Reflection of light occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. This tutorial explores the incident and reflected angles of a single light wave impacting on a smooth surface.
Types of reflection
Regular reflection occurs when incident parallel rays are also reflected parallel from a smooth surface. If the surface is smooth, parallel incident rays are no longer parallel when reflected. This results in diffuse.
The laws of reflection apply to diffuse reflection. The irregular surface can be considered to be made up of a large number of small planar reflecting surfaces positioned at slightly different angles. Indirect (or diffuse) lighting produces soft shadows. It produces less eye strain than harsher, direct lighting.
Uses of reflection
A refracting telescope uses convex lenses to gather a large amount of light and focus it onto a smaller area. Refracting telescopes use two lenses—an eyepiece lens and an objective lens. When light passes through the objective lens, the lens focuses the light at a certain distance away from the lens. This distance is called the focal length of the lens.
Plane mirror
The rear view mirror of a car helps the drivers to see traffic behind the car.
Plane mirrors on walls make a room look bigger.
Convex mirror
Security mirrors are used in shops.
Concave mirror
A concave mirror is used to reflect light into the microscope.
When does it happen
Reflection of light occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. This tutorial explores the incident and reflected angles of a single light wave impacting on a smooth surface.
Types of reflection
Regular reflection occurs when incident parallel rays are also reflected parallel from a smooth surface. If the surface is smooth, parallel incident rays are no longer parallel when reflected. This results in diffuse.
The laws of reflection apply to diffuse reflection. The irregular surface can be considered to be made up of a large number of small planar reflecting surfaces positioned at slightly different angles. Indirect (or diffuse) lighting produces soft shadows. It produces less eye strain than harsher, direct lighting.
Uses of reflection
A refracting telescope uses convex lenses to gather a large amount of light and focus it onto a smaller area. Refracting telescopes use two lenses—an eyepiece lens and an objective lens. When light passes through the objective lens, the lens focuses the light at a certain distance away from the lens. This distance is called the focal length of the lens.
Plane mirror
The rear view mirror of a car helps the drivers to see traffic behind the car.
Plane mirrors on walls make a room look bigger.
Convex mirror
Security mirrors are used in shops.
Concave mirror
A concave mirror is used to reflect light into the microscope.
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