When people look into a mirror, they see an image of themselves behind the glass. That image results from light rays encountering the shiny surface and bouncing back, or reflecting, providing a ...

The film demonstrates the principles of optics, particularly how light behaves and interacts with objects. It explains that light travels in straight lines, which is evident in the formation of sharp ...

IN the discussion which followed Prof. Lippmann's splendidly interesting communication to the Royal Society (April 23), on colour photography, I suggested the possibility of applying his method to the ...