What are UV rays? Harm of UV rays to skin and tips to protect skin in summer
1 What are UV rays? Where is it? Sunlight is classified into 3 main groups based on wavelength: Infrared rays, light visible to the human eye, and UV rays. UV (ultraviolet radiation) is a form of electromagnetic radiation that comes from the sun or other man-made sources such as tanning beds, soldering irons, etc. The term ultraviolet in ultraviolet means above the color of the color. purple . Purple is the color with the shortest wavelength that our naked eye can see. Because it is beyond the wavelength of purple, UV rays are invisible to the human eye. UV rays are electromagnetic waves with wavelengths shorter than that of visible light but longer than that of X-rays . The spectrum (band of all possible frequencies of electromagnetic radiation) of ultraviolet light can be divided into two regions: the near ultraviolet region (with wavelengths from 380 to 200 nm ) and the ultraviolet region. Also known as the vacuum ultraviolet region (with wavelengths from 200 to 10 ...