The fundamental particle of light is both ordinary and full of surprises. What physicists refer to as photons, other people might just call light. As quanta of light, photons are the smallest possible ...

If you’ve ever seen strange concentric ring patterns show up when two panes of glass are pushed together, you’ve seen Newton’s rings. Most people see them as evidence of the wave nature of light.

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Light beams striking a flat surface are commonly considered to reflect with perfect symmetry. But highly precise experiments in the infrared region have now confirmed that this is not truly the case ...

A stronomers have found more evidence that there is a massive ripple traveling through the Milky Way. They have found ...