Playing golf yesterday. I played a hole, which distance was very deceiving. I wished I had one of those rangefinders handy and my mind went on this whole tangent of how they work. Some only seem to have one scope, which destroys my only theory of using trigonometry.
In: Technology
They shine a laser at the target and examine the light that comes back. They look for how long it took the pulse to come back (time of flight) to calculate the round trip distance.
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