laser device - ορισμός. Τι είναι το laser device
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Τι (ποιος) είναι laser device - ορισμός

SURVEILLANCE DEVICE THAT USES A LASER BEAM TO DETECT SOUND VIBRATIONS IN A DISTANT OBJECT
Light beam microphone; Laser microphones; Laser listening device; Buran eavesdropping device

Laser pointer         
  • A 5 mW green laser pointer directed at a [[palm tree]] at night. Note that the beam itself is visible through [[Rayleigh scattering]].
  • Trails by a 15 mW green laser pointer in a time exposure of a living room at night
  • Laser level used in construction.
HANDHELD DEVICE THAT EMITS A LASER
Laser Pen; Laser Pointer; Laser pen; Green laser pointer; Laser gunsight; Laser pointers; Laser pointed
A laser pointer or laser pen is a small handheld device with a power source (usually a battery) and a laser diode emitting a very narrow coherent low-powered laser beam of visible light, intended to be used to highlight something of interest by illuminating it with a small bright spot of colored light.
Laser Mégajoule         
LMJ; Megajoule laser; Laser Megajoule; Ligne d'Integration Laser; Ligne d'Intégration Laser; Laser megajoule; Laser mégajoule; Laser MégaJoule; Laser MegaJoule
Laser Mégajoule (LMJ) is a large laser-based inertial confinement fusion (ICF) research device near Bordeaux France, built by the French nuclear science directorate, Commissariat à l'Énergie Atomique (CEA).
Fiber laser         
LASER IN WHICH THE ACTIVE GAIN MEDIUM IS AN OPTICAL FIBER DOPED WITH RARE-EARTH ELEMENTS SUCH AS ERBIUM, YTTERBIUM, NEODYMIUM, DYSPROSIUM, PRASEODYMIUM, THULIUM AND HOLMIUM
Ultrafast fiber laser; Optical fiber laser; Optical fibre laser; Fibre laser; Fiber optic laser; Fibre optic laser
A fiber laser (or fibre laser in British English) is a laser in which the active gain medium is an optical fiber doped with rare-earth elements such as erbium, ytterbium, neodymium, dysprosium, praseodymium, thulium and holmium. They are related to doped fiber amplifiers, which provide light amplification without lasing.

Βικιπαίδεια

Laser microphone

A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. It can be used to eavesdrop with minimal chance of exposure.

The object is typically inside a room where a conversation is taking place and can be anything that can vibrate (for example, a picture on a wall) in response to the pressure waves created by noises present in the room. The object preferably should have a smooth surface for the beam to be reflected accurately. The laser beam is directed into the room through a window, reflects off the object, and returns to a receiver that converts the beam to an audio signal. The beam may also be bounced off the window itself. The minute differences in the distance traveled by the light as it reflects from the vibrating object are detected interferometrically. The interferometer converts the variations to intensity variations, and electronics are used to convert these variations to signals that can be converted back to sound.

Παραδείγματα από το σώμα κειμένου για laser device
1. Bath, an ophthalmologist, invented the Laserphoto Probe, a laser device that has had great impact on cataract surgery since then.
2. The U.S. military has given troops in Iraq a laser device to temporarily blind drivers who ignore warnings at vehicle checkpoints, the Pentagon said on Thursday.
3. Mr Wiltshire was driving home in his M–reg Escort nearly a year ago when he was pulled to the side of the road by officers using a LTI 20/20 laser device.