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What is Infrared Energy?

The electromagnetic spectrum is divided into three segments by wavelength, which is measured in microns (1/1,000,000 of a meter).

0.76 to 1.5 microns = near infrared = 0.000029921259842519687 Inches to 0.00005905511811023622 Inches

1.5 to 5.6 microns = middle infrared = 0.00005905511811023622 Inches to 0.00022047244094488188 Inches

5.6 to 1000 microns = far infrared = 0.00022047244094488188 Inches to 1000 Microns = 0.03937007874015748 Inches

This wavelength of light warms objects without warming the air between the source and the object (known as conversion).
This radiant heat can also be called Infrared Energy (IR). Do not confuse this with UV radiation (sunburn) or atomic radiation (nuclear) - see the diagram above for where these types of light fall on the spectrum. Infrared waves are not visible to human eyes but can be seen by special instruments that translate infrared into colors that are visible to our eyes. The best example is the sun (80% of the sun’s rays are infrared). Our atmosphere allows infrared rays in the 7 to 14 micron range to safely reach the earth’s surface.
When warmed, the earth radiates infrared rays with its peak output at 10 microns.
The human body radiates infrared energy out through the skin at 3 to50 microns, with most around 9.4 microns.