So if somebody can reach under the chair that s next to them, you ll find something taped underneath it.

In physics, an atomic mirror is a device which reflects neutral atoms in the similar way as the conventional mirror reflects visible light.

Security checks are performed on persons, luggage and related articles and motor cars through the use of technologically advanced equipment (electronic detection gates for persons, X ray equipment for checking luggage, fiberscopes and mirrors for vehicles)

If you own any shares in companies that produce reflecting telescopes, use differential and integral calculus, or rely on the laws of motion, should start dumping them NOW.

It is possible to take excellent images with standard film (using ISO ratings between 100 and 400) and a single lens reflex camera with full aperture, a fast lens (f1.4 50 mm, for example), and exposures between 10 and 30 seconds, depending on the aurora's brightness.

It's basically the idea of, you wear a leotard, and they put some reflective markers on your body, and instead of using cameras, there're infrared sensors around a volume, and those infrared sensors track the three dimensional position of those markers in real time.

The IGBTs in an inverter based machine are controlled by a microcontroller, so the electrical characteristics of the welding power can be changed by software in real time, even on a cycle by cycle basis, rather than making changes slowly over hundreds if not thousands of cycles.

It ought to be buzzing with plans to reduce the temperature, and with plans to live at the higher temperature and not at all costs, but efficiently and cheaply. And some such plans exist, things like swarms of mirrors in space to deflect the sunlight away, and encouraging aquatic organisms to eat more carbon dioxide.