Each day we are surrounded by light energy, sometimes we see it, and sometimes we don’t. For centuries, great minds have theorized what it is, how it travels, and how it affects life on our planet. Ancient cultures, researchers, and philosophers came up with many concepts, but sometime in the 1860’s James Clerk Maxwell, a Scottish physicist, proposed the theory of electromagnetism. He is sure that because light moves in waves and does not need a medium to travel through, light must be made up of both electric and magnetic fields.
These led to the discovery of electromagnetic radiation, the electromagnetic spectrum, and a way to measure light with each frequency and wavelength. The electromagnetic spectrum starts with safe radiation like radio, microwave, infrared, visible, and ultraviolet and ends with the not-as-safe x-ray and gamma rays.
The human eye can see wavelengths of light that range from 380 to 700 nanometers, but the human body can feel parts of the electromagnetic spectrum that cannot be seen, such as infrared heat.
Many wellness services employ light or heat therapy; two of the most popular are red light therapy and infrared heat. Both infrared and red light therapy is becoming progressively popular in the spa, wellness, and beauty realms and is often confused. Still, they are different, and they do provide particular benefits.
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