What is far infrared ray?
What is far infrared ray?
Sunlight can be roughly divided into visible light and invisible light. After visible light passes through a prism, it will refract into purple, blue, cyan, green, yellow, orange, and red light (spectrum). The light outside the red light, with a wavelength from 0.76 to 400 microns in the spectrum, is called infrared light, also known as infrared rays.
Infrared rays belong to the category of electromagnetic waves and are radiation with strong thermal effects. The wavelength range of infrared is very wide. People divide infrared in different wavelength ranges into near-infrared, mid-infrared and far-infrared regions. The electromagnetic waves with corresponding wavelengths are called near-infrared, mid-infrared and far-infrared.
Infrared is a type of light wave whose wavelength is shorter than radio waves and longer than visible light. Infrared rays are invisible to the naked eye and are emitted by any object. Hot objects emit stronger infrared radiation than cold objects.
There are countless far-infrared radiation sources in nature: stars in the universe, the sun, oceans on the earth, mountains, rocks, soil, forests, cities, villages, and various items produced by humans, all at absolute zero (-273°C) The above environments emit varying degrees of infrared rays everywhere. Modern physics calls them heat rays. From the law of conservation of energy, we know that the energy of the universe cannot be generated or disappear, it can only change the way of energy. Thermal energy is a type of cosmic energy that can be converted by radiation (radiation), conduction and convection. During the radiation process, part of the heat energy forms infrared rays. Infrared radiation has the same speed as visible light and can travel in a straight line like light; if a reflective plate is used, its direction can be changed.
Decades ago, aerospace scientists investigated and studied the living conditions of human beings in spaceships in vacuum, weightlessness, ultra-low temperature, and overload conditions, and learned that far-infrared rays with a wavelength of 8 to 14 microns in sunlight are essential for biological survival. the elements of. Therefore, people call this wavelength of far-infrared rays “life light waves”. This wavelength of light is similar to the wavelength of far-infrared rays emitted by the human body. It can effectively “resonate” with water molecules in cells in living organisms. It also has permeability and effectively promotes the growth of animals and plants. wuKiyWd
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