The first law of refraction states that the incident rays, refracted rays, and the normal to the interface at the point of incidence, all lie in the same plane. The ratio of the sine of the angle of ...

There has been light from the beginning. There will be light, feebly, at the end. In all its forms—visible and invisible—it saturates the universe. Light is more than a little bit inscrutable. Modern ...

It’s funny. I expected today to be a really light day in the world of sports. It’s kind of an in-between day, actually, in-between the weekend’s college hoop action. But after doing my usual spin ...