What is Far Infrared?

Infrared is a section, or "band" of invisible light found on the electromagnetic spectrum. It's a form of radiant heat that can also be called "infrared energy." About 80% of the sun's rays actually fall in this part of the spectrum. Far infrared, the energy produced in CZ Infrared™ Heaters, is the form of this energy that occupies the region where wave frequencies measure between 5.5 and 15 microns.

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The electromagnetic spectrum is the entire range of radiant energies, measured as waves or frequencies. It is divided into three segments by wavelength measured in microns. A wavelength of 0.076 to 1.5 microns is "near" infrared, 1.5 to 5.6 microns is "middle" infrared, and 5.6 to 1000 microns is "FAR" infrared (FIR). This invisible band of light warms objects without warming the surrounding air. The best example of infrared heat is the sun. The best example of this is the sun. Consider standing in the sun on a cold day. You feel warmth from the sun even though the air temperature is cold. This warmth you feel is far infrared penetrating your body to a depth of 1.5 to 3.5 inches. Infrared heat is, therefore, a completely safe energy that raises the temperature in objects without having to heat the surrounding air. Approximately 80% of the sun's rays fall into the infrared range. (This should not be confused with ultraviolet rays, which are harmful to the skin.)