However, the invention of the mirror dates back thousands of years, and they have undergone numerous changes as humans perfected these reflective devices. For example, silvered mirrors ...

This is one of very few Roman mirrors of this type known from anywhere in the Roman Empire. A slave would have held the mirror by the ornate handles so that the lady could view her face in the ...

With this sextant, one of the mirrors ( mirror A in the diagram) is half-silvered, which allows some light to pass through. In navigating, you look at the horizon through this mirror. The other ...

By contrast, an open-cavity laser has a gas-discharge tube sealed with the fully silvered mirror on one end and a Brewster window on the other, which is a very flat piece of glass set at a steep ...