laser seismometer

0.01 sec.

laser seismometer [′lā·zər sīz′mäm·əd·ər]

(engineering)

A laser interferometer system that detects seismic strains in the earth by measuring changes in distance between two granite piers located at opposite ends of an evacuated pipe through which a helium-neon or other laser beam makes a round trip; movements as small as 80 nanometers (one-eighth the wavelength of the 632.8-nanometer helium-neon laser radiation) can be detected.

Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content.

?Page tools

Printer friendly
Cite / link

Feedback

Mentioned in	?		Encyclopedia browser	?		Full browser	?
No references found			laser extensometer laser flash tube laser fusion laser glazing laser guidance laser gyro laser heterodyne spectroscopy laser infrared radar laser interferometer laser intrusion detector laser jamming Laser Materials laser memory Laser Phosphor Display laser photobiology laser photocoagulator laser printer laser pump laser radar laser radiation detector Laser Radiation, Effects of laser rangefinder laser ranging laser recorder laser scriber laser seismometer laser sintering Laser Spark Laser Spectroscopy laser spectrum Laser Technology laser threshold laser tracking laser transit laser trap Laser Turntable laser TV laser tweezers laser velocimeter laser welding laser-beam cutting laser-beam printer laser-class printer laser-holography storage laser-induced fluorescence imaging laser-induced fusion laser-induced nuclear polarization laser-solid interaction Laser-solid interactions laser-triggered switch laser/fiber-optic gyroscope			Laser Resonance Fluorescence Laser Resonant Electron Detection Laser resurfacing Laser Retro-Reflector Laser Ring Gyro Laser Ring Gyro Laser Safety Danger Zone Laser Safety Officer Laser Safety Review Board Laser Scaling and Measurement Device for Photographic Images Laser Scanning Confocal Immunofluorescence Microscopy Laser Scanning Confocal Light Microscope Laser Scanning Confocal Microscopy Laser Scanning Microscope Laser Scanning Microscopy Laser Scanning Reflection Microscopy Laser Scanning Unit Laser Scattering Tomography Defect Laser Science & Technology Centre Laser Science Research Laboratory Laser Scope laser scriber laser search and secure observer Laser Secondary Neutral Mass Spectroscopy Laser seeker Laser seeker laser seismometer Laser Self-Defence Weapon Laser Semi Active Homing Laser Semi Active Missile Laser Sensitive Television Laser Sensor Damage Weapon Laser Servo Laser Servo Diskette Laser Servo Drive Laser Shock Peening/Processing laser sight Laser Signal Injection Microscopy laser sintering Laser Society of Japan Laser Soft Infosystems Ltd. Laser Solutions Inc. Laser Spark Laser spectroscopy Laser spectroscopy Laser spectroscopy laser spectrum Laser Speed Measuring Device Laser Spike Annealing Laser Spillover and Reflectivity Laser Spine Institute laser spot Laser Spot Designator and Receiver

Encyclopedia

Free Tools:	For surfers: Free toolbar & extensions \| Word of the Day \| Help For webmasters: Free content \| Linking \| Lookup box \| Double-click lookup

Disclaimer
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional.