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- Laser_microphone abstract "A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. This technology 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 has a smooth surface. The laser beam is directed into the room through a window, reflects off the object and returns to a receiver (for example a solar panel) 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.However, countermeasures exist in the form of specialized light sensors that can detect the light from the beam. Rippled glass can be used as a defense, as it provides a poor surface for a laser microphone.However, by simple extrapolation it should be easily possible to adapt this technique to a maser or focused microwave beam in order to fire the beam through ordinary building materials and bounce it off of internal metal objects such as heating ducts or filing cabinets. At this point the only acceptable defense is electromagnetically and acoustically isolating the interior of the structure.".
- Laser_microphone wikiPageExternalLink schwartzengineeringanddesign-smokemic-aes2009.html.
- Laser_microphone wikiPageExternalLink schwartzengineeringanddesign-smokemic-aes2009.html.
- Laser_microphone wikiPageExternalLink contentslmj6.html.
- Laser_microphone wikiPageExternalLink laser-mic.htm.
- Laser_microphone wikiPageExternalLink watch?v=Gqe79RpbPxU.
- Laser_microphone wikiPageExternalLink watch?v=V2K5LJHTouQ.
- Laser_microphone wikiPageID "2244025".
- Laser_microphone wikiPageLength "6695".
- Laser_microphone wikiPageOutDegree "26".
- Laser_microphone wikiPageRevisionID "679368029".
- Laser_microphone wikiPageWikiLink Abbottabad.
- Laser_microphone wikiPageWikiLink Category:Covert_listening_devices.
- Laser_microphone wikiPageWikiLink Category:Microphones.
- Laser_microphone wikiPageWikiLink Category:Optical_devices.
- Laser_microphone wikiPageWikiLink Category:Surveillance.
- Laser_microphone wikiPageWikiLink Diaphragm_(acoustics).
- Laser_microphone wikiPageWikiLink Interferometer.
- Laser_microphone wikiPageWikiLink Interferometry.
- Laser_microphone wikiPageWikiLink KGB.
- Laser_microphone wikiPageWikiLink Laser.
- Laser_microphone wikiPageWikiLink Lavrentiy_Beria.
- Laser_microphone wikiPageWikiLink Leonardo_Music_Journal.
- Laser_microphone wikiPageWikiLink List_of_laser_articles.
- Laser_microphone wikiPageWikiLink Léon_Theremin.
- Laser_microphone wikiPageWikiLink Osama_Bin_Laden.
- Laser_microphone wikiPageWikiLink Osama_bin_Laden.
- Laser_microphone wikiPageWikiLink Pakistan.
- Laser_microphone wikiPageWikiLink Passive_radar.
- Laser_microphone wikiPageWikiLink Photophone.
- Laser_microphone wikiPageWikiLink Reconnaissance_satellite.
- Laser_microphone wikiPageWikiLink Rippled_glass.
- Laser_microphone wikiPageWikiLink Sound.
- Laser_microphone wikiPageWikiLink Spy_satellite.
- Laser_microphone wikiPageWikiLink Surveillance.
- Laser_microphone wikiPageWikiLink Unmanned_aerial_vehicle.
- Laser_microphone wikiPageWikiLink Vibration.
- Laser_microphone wikiPageWikiLinkText "Laser microphone".
- Laser_microphone wikiPageWikiLinkText "Light beam microphone".
- Laser_microphone wikiPageWikiLinkText "laser microphone".
- Laser_microphone wikiPageWikiLinkText "lasers".
- Laser_microphone date "April 2012".
- Laser_microphone hasPhotoCollection Laser_microphone.
- Laser_microphone reason "NPR interview sources part of this section, but does not verify such exact claims as "laser microphones were used". Precise sourcing needed to avoid synthesis here.".
- Laser_microphone wikiPageUsesTemplate Template:Cite_book.
- Laser_microphone wikiPageUsesTemplate Template:Cite_journal.
- Laser_microphone wikiPageUsesTemplate Template:Refimprove_section.
- Laser_microphone wikiPageUsesTemplate Template:Reflist.
- Laser_microphone subject Category:Covert_listening_devices.
- Laser_microphone subject Category:Microphones.
- Laser_microphone subject Category:Optical_devices.
- Laser_microphone subject Category:Surveillance.
- Laser_microphone hypernym Device.
- Laser_microphone type Article.
- Laser_microphone type Device.
- Laser_microphone type Application.
- Laser_microphone type Article.
- Laser_microphone type Sensor.
- Laser_microphone type Technique.
- Laser_microphone comment "A laser microphone is a surveillance device that uses a laser beam to detect sound vibrations in a distant object. This technology 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 has a smooth surface.".
- Laser_microphone label "Laser microphone".
- Laser_microphone sameAs Laserový_mikrofon.
- Laser_microphone sameAs Lasermikrofon.
- Laser_microphone sameAs Micrófono_láser.
- Laser_microphone sameAs میکروفون_لیزری.
- Laser_microphone sameAs レーザーマイクロフォン.
- Laser_microphone sameAs Lasermicrofoon.
- Laser_microphone sameAs Mikrofon_laserowy.
- Laser_microphone sameAs m.06ys0v.
- Laser_microphone sameAs Q1321229.
- Laser_microphone sameAs Q1321229.
- Laser_microphone wasDerivedFrom Laser_microphone?oldid=679368029.
- Laser_microphone isPrimaryTopicOf Laser_microphone.