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2. Laser level - Wikipedia

   en.wikipedia.org/wiki/Laser_level

   The concept of a laser level has been around since at least the early 1970s, [2] the original spinning-mirror design laser plane and line level was patented by the late 1980s, [3] and the compact lens-based laser line level (as produced by many tool manufacturers today) was patented in the late 1990s. It was invented by Oscar Soliz in the late ...

3. Level (optical instrument) - Wikipedia

   en.wikipedia.org/wiki/Level_(optical_instrument)

   This reduces the need to set the instrument base truly level, as with a dumpy level. Self-levelling instruments are the preferred instrument on building sites, construction, and during surveying due to ease of use and rapid setup time. A digital electronic level is also set level on a tripod and reads a bar-coded staff using electronic laser ...

4. List of petawatt lasers - Wikipedia

   en.wikipedia.org/wiki/List_of_petawatt_lasers

   Laboratory for Laser Energetics, University of Rochester United States: Ti:sapphire 25 Planned J-KAREN National Institutes for Quantum Science and Technology Japan: Ti:sapphire 28/30 33/30 0.85/1 Operation Gemini Rutherford Appleton Laboratory United Kingdom: Ti:sapphire 15 30 0.5 Operation VEGA-3 University of Salamanca Spain: Ti:sapphire 30 30

5. 6 Best Cold Laser Therapy Devices to Use at Home

   www.aol.com/lifestyle/6-best-cold-laser-therapy...

   The best cold laser therapy devices cater to inner and outer wellness in equal measure. ... select a light level or timer setting—simply target your device so the red or slightly warm light is ...

6. Self-mixing interferometry - Wikipedia

   en.wikipedia.org/wiki/Self-mixing_interferometry

   Self-mixing or back-injection laser interferometry is an interferometric technique in which a part of the light reflected by a vibrating target is reflected into the laser cavity, causing a modulation both in amplitude and in frequency of the emitted optical beam. In this way, the laser becomes sensitive to the distance traveled by the ...

7. Ring laser gyroscope - Wikipedia

   en.wikipedia.org/wiki/Ring_laser_gyroscope

   A ring laser gyroscope (RLG) consists of a ring laser having two independent counter-propagating resonant modes over the same path; the difference in phase is used to detect rotation. It operates on the principle of the Sagnac effect which shifts the nulls of the internal standing wave pattern in response to angular rotation.