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Infrared Thermometers: Frequently Asked Questions

How does infrared work?

IR infrared thermometers capture the invisible infrared energy naturally emitted from all objects warmer than absolute zero (0 degrees Kelvin). Infrared radiation is part of the electromagnetic spectrum which includes radio waves, microwaves, visible light, ultraviolet, gamma, and X-rays. Any object emits energy somewhere within that range.

Infrared falls between the visible light of the spectrum and radio waves. Infrared wavelengths are usually expressed in microns with the infrared spectrum extending from 0.7 microns to 1000 microns. In practice, the 0.7 to 14 micron band is used for IR temperature measurement.

 

Other frequently asked questions:
What should I do when batteries need to be replaced in infrared thermometers?
Will infrared sensors measure air?
Do infrared thermometers measure water or ice?
How does infrared work?