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/