On the night of May 16, a large beam of light resembling a spotlight was seen shooting into the night sky in the Southwest, but its source remains unknown. A Facebook post sharing the mysterious light ...

If you shine a light at a mirror, the beam is reflected inward to a central focal point, bouncing back toward you in a predictable manner—it’s a simple reflection of light, a spatial inversion. When a ...

How diamonds reflect and refract light impacts how they appear at different angles. Refraction occurs when light changes ...