How to Check for a Two-Way Mirror Let’s say you’re not in an interrogation room, but instead in a hotel room, and you want to check if the mirrors there are one-way or two-way.

With regard to my previous blog titled How Do Mirrors Work? … a reader posted a comment saying “I have a more basic question. When you look in a mirror – it appears to invert your image Left-to-Right; ...

Why do mirrors flip faces horizontally but not vertically? James May explains, with the help of a very childish prank.

Dielectric mirrors may also be designed for special purposes--for example, to reflect 80 percent of green light while transmitting nearly 20 percent and simultaneously to transmit red light nearly ...