My Physics project .

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12.  There is nothing like Pink light.
www.youtube.com/watch?v=S9dqJRyk0YM
 299,792,458 m/s , The actual and precise speed of light in air
and vacuum.
 Incidentally, the slowest light has ever been recorded travelling
was 17 meters per second, through a rubidium, cooled to almost
absolute zero, when it forms a strange state of matter called a
Bose-Einstein condensate.
 In glasses, light slows down a bit, bending its trajectory and
allowing the making of lenses.
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