What I want to do in this video is give ourselves a basic introduction to the phenomenon of light. And light is, at least to me, mysterious. Because on one level it really defines our reality....
Why is the sky dark at night? You might think the answer is obvious - the sun isn't up! But the only reason the sky looks blue during the day is that sunlight scatters off of the atmosphere -...
We've all been told that the colors of the rainbow correspond to different wavelengths of visible light - red, orange, yellow, green, blue, and violet. Where's pink in that list?...