Sunburn is a concern when the sun is strong.
In summer, some people take UV protection.
Although ultraviolet rays have a rather bad image, they are used in various scenes in our daily lives.
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There are different types of ultraviolet radiation.
Ultraviolet radiation can be divided into three main categories according to wavelength (the length of one wave).
near-ultraviolet rays…What we call UV.
UV-A… causes loss of elasticity and accelerated ageing of the skin, while activating cellular functions.
UV-B…causes sunburn. Produces vitamin D.
UV-C … highly bactericidal and destructive to living organisms, but does not normally reach the ground surface.
Far ultraviolet (vacuum ultraviolet)
It can only travel in a vacuum and therefore does not reach the surface of the earth.
Extreme ultraviolet
Ultraviolet radiation similar to X-rays.
In our daily lives, we are greatly affected by near-ultraviolet radiation that reaches the earth’s surface.
Although UV radiation has a bad reputation, it is used in a wide range of fields.
Use of ultraviolet radiation
- black light
In addition to appraising jewelry, ultraviolet light is also used to prevent passport counterfeiting through the use of special inks.
- Fluorescent lamp
- Sterilization
- pest control
- food processing
On an industrial scale, our photoemission electron microscopes can visualize the electronic state of a sample’s surface by irradiating it with a variety of ultraviolet rays.
Ultraviolet radiation also plays an important role in research and development.
