LASER RANGEFINDER Meaning and
Definition
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A laser rangefinder is a device used to measure distance by transmitting a laser beam towards a target and then calculating the time it takes for the laser to bounce back. It is typically used in various applications such as surveying, mapping, hunting, golfing, and military operations.
The laser rangefinder works by emitting a laser pulse towards the desired target. The emitted laser beam travels through space until it reaches the target and then bounces back to the rangefinder's receiver. The device then measures the time taken for the laser to travel back, and based on the speed of light, it calculates the distance between the rangefinder and the target.
The accuracy of a laser rangefinder is highly dependent on the quality of the device and the atmospheric conditions. Some advanced rangefinders employ additional technologies like GPS to enhance accuracy. Laser rangefinders often feature magnification capabilities, allowing users to precisely measure distances to far-off objects.
Due to their convenience, compact size, and accuracy, laser rangefinders have become popular tools among outdoor enthusiasts, sportsmen, and professionals engaged in mapping or distance measurement tasks. They offer quick and reliable measurements, making them invaluable for activities like hunting, golfing, and even architecture. Additionally, laser rangefinders have widespread military applications, providing crucial distance measurements for artillery and snipers, aiding in accurate targeting and range estimation.
Etymology of LASER RANGEFINDER
The word "laser rangefinder" combines two different components: "laser" and "rangefinder".
The term "laser" was coined in the mid-20th century, originating as an acronym for "light amplification by stimulated emission of radiation". It was first introduced by physicist Gordon Gould in 1957. "Laser" refers to a device that emits a narrow, intense beam of light consisting of photons of the same wavelength and phase.
The word "rangefinder" has a longer history. It evolved from the combination of "range" and "finder". "Range" comes from the Old French word "range", meaning a row or line, which eventually expanded to signify the distance an arrow or bullet could travel. In the 18th century, "range" took on the meaning of a series of mountains, thus referring to a vast area.
