Have you ever sat on the bottom of a swimming pool and pondered your watery ceiling? Most of the surface is a sheet of light blue, and you can't see through it, even though the water is clear. But ...

Light consists of electromagnetic waves that oscillate in time and propagate in space. Scalar waves are described by their intensity and phase distributions. These are the spatial (orbital) degrees of ...

Introduction Can you imagine a bouncy ball that could bounce back and forth between two walls, infinitely—that is, forever? Wouldn't that be amazing? What if, instead of a ball, light was bouncing ...

One of the dumber assertions that always turns up in arguments about the sciences versus "the humanities"-- the Two Cultures of C.P. Snow's famous lecture-- is that the clinical approach inherent to ...

In 1676, by studying the motion of Jupiter's moon Io, Danish astronomer Ole Rømer calculated that light travels at a finite speed. Two years later, building on data gathered by Rømer, Dutch ...

Rabbi Abraham Unger, executive director of New Synagogue Palm Beach, said the holiday recognizes the survival of the Jewish people during a time of widespread assimilation and oppression, as it ...

President Thomas S. Monson opened the Sunday morning session of the October 2015 General Conference by addressing the passing of the three apostles and by welcoming the members of the Quorum of the ...

Turning off the lights and closing the curtains isn't exactly a catchy, new sleep hygiene hack, but this common sense advice is gaining even more scientific credibility. Many Americans sleep in a room ...