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A laser rangefinder, also known as a laser telemeter, is a rangefinder that uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by sending a laser pulse in a narrow beam towards the object and measuring the time taken by the pulse to be reflected off the ...
Pacific Electric Upland–San Bernardino: Operated 1914–1950. 600 V in city limits California: Sacramento Northern Railway: Operated 1910–1936. Converted to 1,500 V. The southern division was built by the Oakland, Antioch and Eastern Railway. East Bay, California: East Bay Electric Lines: 1911–1941 Oregon: Oregon Electric Railway: 1912–1945
On 25 August 2009, U.S. patent 7,580,533 was issued for a device that uses a laser beam and smoke or vapor to detect sound vibrations in free air ("Particulate Flow Detection Microphone based on a laser-photocell pair with a moving stream of smoke or vapor in the laser beam's path"). Sound pressure waves cause disturbances in the smoke that in ...
Laser diffraction analysis, also known as laser diffraction spectroscopy, is a technology that utilizes diffraction patterns of a laser beam passed through any object ranging from nanometers to millimeters in size [1] to quickly measure geometrical dimensions of a particle.
The Biden administration asked a federal appeals court on Tuesday to block a plea agreement for accused 9/11 mastermind Khalid Sheikh Mohammed that would spare him the risk of the death penalty in ...
Cam Ward or Shedeur Sanders in New York? Does Ashton Jeanty squeeze into the first round? Check out Nate Tice and Charles McDonald's third 2025 mock draft, just in time for the holidays.