If you were to construct a perfect sphere which which was
coated on the inside with a reflective substance and you stood inside,
would you see anything? If you had a light with you, would you be
blinded? Would you just see white light all around?
Inside a perfectly reflective chamber, tight would keep bouncing around
until it hit something that absorbs it. If you were to stand in the
chamber, that absorbing object would be you. As soon as you turned the
light off, the light would be pretty much all gone - at the speed of light,
it wouldn't take very long for every last photon to reach and be absorbed
Richard Barrans Jr., Ph.D.
Click here to return to the Physics Archives
Update: June 2012