laser beam projector
81Ceilometer — A ceilometer is a device that uses a laser or other light source to determine the height of a cloud base. Ceilometers can also be used to measure the aerosol concentration within the atmosphere.Optical Drum Ceilometer* An optical drum ceilometer… …
82Projection keyboard — A projection keyboard is a virtual keyboard that can be projected and touched on any surface. The keyboard watches finger movements and translates them into keystrokes in the device. Most systems can also function as a virtual mouse or even as a… …
83Electron — For other uses, see Electron (disambiguation). Electron Experiments with a Crookes tube first demonstrated the particle nature of electrons. In this illustration, the profile of the cross shaped target is projected against the tube face at right… …
84List of characters in Ben 10 — This is a list of characters in the American animated television series Ben 10 and its sequel . This list only includes characters which have appeared in more than one episode.HeroesBen TennysonBenjamin Ben Tennyson (voiced by Tara Strong and… …
85Computer keyboard — A key being pressed on a computer keyboard. In computing, a keyboard is a typewriter style keyboard, which uses an arrangement of buttons or keys, to act as mechanical levers or electronic switches. Following the decline of punch cards and paper… …
86List of Mega Man characters — This is a list of characters from the Mega Man series. In Japan, the Mega Man series is known as Rockman.[1] Contents 1 Main characters 1.1 Mega Man 1.2 Dr. Light …
87Film recorder — A Film Recorder is a graphical output device for transferring digital images to photographic film. All film recorders typically work in the same manner. The image is fed from the computer by a raster file producing program. A film recorder will… …
88Telecine — For a television network in Brazil, see Rede Telecine. Telecine (  /ˈtɛl …
89Head-up display — A head up display, or HUD, is any transparent display that presents data without requiring the user to look away from his or her usual viewpont. The origin of the name stems from the user being able to view information with their head up and… …
90Microelectromechanical systems — (MEMS) (also written as micro electro mechanical, MicroElectroMechanical or microelectronic and microelectromechanical systems) is the technology of very small mechanical devices driven by electricity; it merges at the nano scale into… …
