Visible light

Visible light is the only electromagnetic waves that is visible to the human eye.We see this as the colors of the rainbow,red,orange,yellow,green,blue,indigo and violet,with red having the shortest wavelength at around 700 nanometers and violet with the longest wavelength at 380 nanometers.Cone shaped cells in our eyes receive the color reflected off the objects around,as all other colors are absorbed.When all the colors are seen together,they appear to us as white light.When the wave is not reflected,it appears to us as black.When a light is shined through a prism,it is broken into the various colors,as it is sometimes also done by water vapour.

Sources:

http://www.darvill.clara.net/emag/emagvis.htm

http://www.windows2universe.org/physical_science/magnetism/em_visible_light.html\

http://missionscience.nasa.gov/ems/09_visiblelight.html

http://science.hq.nasa.gov/kids/imagers/ems/visible.html

Ms Karen Teo

Liau Zheng En (10),Tang Wen Yue (20), Yeo Jun Jie (21)