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Table 1 CIE Classification of IR Radiation 56 Name/Abbreviation Near infrared/IR-A Mid-infrared/IR-B Wavelength 0.7–1.4 μm (700–1400 nm) 1.4–3.0 μm (1400–3000 nm) 3.0–100 μm (3000 nm–0.1 mm) The FDA regulations do not distinguish between near, mid- and far infrared. The FDA Physical Medicine Devices Rule (2014) for infrared lamps states, “An infrared lamp is a device intended for a medical purpose that emits energy at infrared frequencies (approximately 0.70–50 μm) to provide topical heating” (p. 1). It is important to understand that when an individual refers to far infrared, it may not be between 50–1000 μm. Instead, the ISO and NASA would classify 0.78–50 μm as near to mid-infrared. To understand the difference between ISO, NASA, and CIE classifications, see Table 1 for the CIE infrared (IR) wavelength and photon energy breakdown according to Vatansever and Hamblin (2012): In the IR radiation bands, only far infrared (FIR) transfers energy purely in the form of heat, which can be perceived by the thermo receptors in human skin as radiant heat. Not only is far infrared absorbed by the human body it is also emitted by the body in the form of black-body radiation (3–50 μm with an output peak at 9.4 μm). (p. 256) Infrared rays are absorbed and emitted by not only the human body but also all things on earth. Prior to the interviews, this Researcher was not aware of the Biomat, which is a device that uses amethyst stones to generate far infrared. The Researcher learned about the use of the Far infrared/IR-C Note. Adapted from Vatansever and Hamblin (2012, p. 256). Photon Energy (THz) 215–430 100–215 3–100PDF Image | Light, Sound, Vibration for Healing and Stress
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