What we see as white light is actually made up of light of different colors. The figure to the right represents the visible spectrum.
|
What we see as white light is actually made up of light of different colors. The figure to the right represents the visible spectrum. |
|
|
Coca Cola is not "clear" but has a distinctive color to it. Using a scanning spectrophotometer we can "see" in a more exact way what color Coke is. Coke absorbs more light in the blue end of the spectrum than in the green and red areas. |
|
|
|
This is not a perfect filter, letting some light through in the "Red" region, but it will work for our purposes. |
