How Does Infrared Light Travel Through Our Bodies?
Infrared light is electromagnetic radiation with wavelengths between 760 nm and 100,000 nm.
It has longer wavelengths than visible light and can pass through dense regions of gas and dust in space with less scattering and absorption.
Infrared radiation is absorbed by the photoreceptors in cells, and once absorbed, the light energy triggers a series of metabolic events, which can promote homeostasis and photobiomodulation via deeper penetration of IR radiation and water molecule absorption in the skin.
In general, the mechanism of action of IR radiating materials is to transform heat energy from the body (convection and conduction) into radiation within the IR wavelength range between 3~20 μm to induce homeostasis and photobiomodulation via deeper penetration of IR radiation and water molecule absorption in the skin.
Humans give off mostly infrared radiation, which is electromagnetic radiation with a frequency lower than visible light.
All objects with a non-zero temperature give off thermal radiation, and because a temperature of exactly absolute zero is physically impossible, all objects give off thermal radiation.
Thermal radiation is not the exact same thing as infrared radiation, but infrared radiation is a type of thermal radiation.
Clothes tend to block infrared radiation, so a person with their shirt off emits more radiation than when it is on.
Infrared radiation is non-ionizing and therefore cannot give you cancer.
The human eye can only see visible light waves, and infrared light has longer wavelengths and lower energy than visible light and cannot be seen.