Light!

With the light analysis needed to be included within the blog I thought it would be best to write up the notes on the lecture on here as well!

Light is electromagnetic radiation, though that does not affect our work too much.

They are linear parallel rays which can either be absorbed reflected or refracted by a surface.

Another interesting bit of information, a red ball absorbs every colour apart from red! The same goes for any colour object.

When a surface is bumpy the light is scattered in all directions and is less reflective than smooth surfaces, this is diffused reflection.

Sub-surface scattering is where light passed into an object however gets scattered inside, resulting in the object appearing to glow slightly.


Analysis of images:

 In this photograph the light is reflecting off the surface of the water, however some is being absorbed due to being able to see the bottom. When light hits the surface of water it is refracted slightly so underwater objects appear slightly further away than they actually are. Since the surface is smooth there is little to no diffused reflection.

http://abyss.uoregon.edu/~js/glossary/refraction.html

In this example light is passing through the banner, however sub-surface scattering is taking place, giving it that slight glow. The glass is smooth so the light is being reflected into the camera. This is the same for the wood of the cabinet, due to the varnish which is reflecting the light. The walls however are rough so diffused reflection is taking place. The lower part of the Tyrannosaurus Rex sign is black and so is absorbing light which hits it.