How to know any material is hot without touching the same?

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2006-10-19 07:31:46 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering

for most such objects it is just enough to get your hand close to it (like 1-2cm distance), and you will feel heat (if there is one)

2006-10-19 07:42:20 · answer #1 · answered by Lolabola 2 · 0⤊ 0⤋

Use an optical pyrometer. It measures temperature from the thermal infrared spectrum emitted by the object.

2006-10-19 14:35:39 · answer #2 · answered by injanier 7 · 0⤊ 0⤋