if i want to measure distance (1-10meter) which is better? infrared or ultrasonic?

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if i want to measure distance (1-10meter) which is better? infrared or ultrasonic?

2007-05-14 03:04:03 · 3 answers · asked by fz n 2 in Science & Mathematics ➔ Physics

3 answers

infrared devices are cheaper, accurate, and used in most of the surveying devices ( total stations ), they can also be installed on levels and theodolites.

2007-05-14 03:18:29 · answer #1 · answered by Mohammed R 1 · 0⤊ 0⤋

Ultrasonic. Since the sound is much slower than the light, and assuming it's using a reflected pulse to measure, the sound will give you better accuracy.

2007-05-14 10:14:51 · answer #2 · answered by Gene 7 · 0⤊ 0⤋

Car Parking sensors use ultra-sonics, but I think a laser measurer would be more accurate.

2007-05-14 10:11:16 · answer #3 · answered by Doctor Q 6 · 0⤊ 0⤋