ULTRAVIOLETLIGHT - Names and Identifiers
ULTRAVIOLETLIGHT - Introduction
ULTRAVIOLET LIGHT is a type of electromagnetic radiation that has a shorter wavelength and higher energy than visible LIGHT. According to different wavelength ranges, ultraviolet rays can be divided into ultraviolet A(UVA, wavelength 315-400 nm), ultraviolet B(UVB, wavelength 280-315 nm) and ultraviolet C(UVC, the wavelength is 100-280 nm) three types.
Ultraviolet light has many important applications. In the medical field, UVC can be used to kill bacteria, viruses and fungi, so it is widely used in disinfection and air purification and other fields. UVA and UVB UV rays can be used to treat certain skin diseases, such as psoriasis and psoriasis. In addition, ultraviolet light is also used in ultraviolet spectrum analysis, lithography printed circuit, dry paint, ultraviolet curing and other processes.
There are many methods for preparing ultraviolet light. A common method is to use a specific light source, such as a mercury lamp, a deuterium lamp, or a strontium diiodide lamp, which emits light containing ultraviolet light. An electroluminescent device, such as a light emitting diode (LED), may also be used to generate ultraviolet light. In addition, it is possible to filter out UV light by selecting specific materials and filters.
ultraviolet rays have a certain degree of danger, especially UVC ultraviolet rays. Prolonged exposure to UVA and UVB ultraviolet rays may cause skin sunburn, photoaging and skin cancer. UVC ultraviolet rays have a greater impact on the human body. Long-term exposure can cause eye and skin diseases. Therefore, you should pay attention to protective measures when using ultraviolet rays, such as wearing ultraviolet protective glasses and comprehensive protection, avoid direct exposure to UV light.
Last Update：2024-04-09 20:52:54