A UV flashlight is a source of ultraviolet rays that are invisible to the human eye. Ultraviolet rays (UV) are electromagnetic radiation with a wavelength shorter than that of visible light but longer than that of X-rays, between 10 and 400 nm, and with energy between 3.10 and 124 electron volts. Their name comes from the fact that this part of the spectrum includes the frequencies immediately after those identified by humans as the color violet.
The most common UV flashlights have wavelengths of 365nm and 395nm.
UV flashlight 365nm ultraviolet light (also called "long wave UV light", "black light") is a type of near-ultraviolet light that is invisible to the naked eye. It is particularly suitable for fluorescence and detection of bacteria. longer wavelength than short-wave visible light, it is able to penetrate substances more deeply and thus provide deeper illumination.
Advantages of UV flashlight 365nm
Due to the nature of the longer wavelength, substances that may be difficult to detect with shorter wavelengths of visible light can be easily detected with 365nm UV light. This means that it can be used to uncover evidence of past events that would otherwise be impossible to detect. Examples include fingerprints on surfaces and documents, biological matter such as saliva, and other types of evidence often seen in criminal investigations.
There are many other applications such as counterfeit detection, material testing and medical diagnostics. 365nm UV light is used to detect small differences in materials that cannot be revealed by visible light. Because of its ability to penetrate deeply, it is also useful for studying the structure of objects or materials that may require highly detailed imaging or measurement.
Other applications:
1. It is used by forensic scientists and law enforcement officers to detect evidence of past events that cannot be seen using visible light.
2. It is also used in counterfeit detection, such as in the authentication of currency and documents, as well as in material testing and research.
3. Manufacturers use 365nm UV light to examine materials for defects, irregularities, or inconsistencies that may be difficult to detect with visible light.
4. 365nm UV light is also used for gemstone classification and analysis.
5. 365nm can cure resins and plastics.