He found that if a beam of white light is passed through glass prism then it will split in to seven colours. These colours are red, orange, yellow, green, blue, indigo and violet (VIBGYOR).

Remove the block. Join the crosses to show the paths of the light rays. Repeat steps 2 - 7 for a rectangular glass block. Measure the angle of incidence and angle of refraction for each block.

Direction of refraction Glass is denser than air, so when light passes from air into glass it slows down. If the ray meets the boundary at an angle to the normal, it bends towards the normal.

Cloaking Device Breakthrough? Negative Refraction Of Visible Light Demonstrated Date: March 23, 2007 Source: California Institute of Technology Summary: For the first time, physicists have devised ...

Refraction occurs when light changes direction as it passes, e.g., from air into water or glass. Negative refraction, however, is a counterintuitive effect where light in a medium bends in the ...

Refraction is the bending of light rays. Normally, light travels in a straight line, and changes direction and speed when it passes from one transparent medium to another, such as from air into glass.