Additionally, UV-B is also harmful and is absorbed by the Ozone Layer on the Earth’s atmosphere. However, based on the effects of global warming, the penetration of the UV-B radiation through the ozone facilitates sunburn on human skin (Akram and Rubock, pp. 2-11).
The discovery of ultraviolet light owes to the scientific research by John Ritter of 1801 which showed that in the presence of ultraviolet light, blue photographic paper would turn black. Following the discovery of the ultraviolet light/radiation, scientists have used the concept of ultraviolet wavelengths to monitor the formation of stars in the galaxy. Since most stars emit light at the wavelength of UV-light, scientists can monitor activity in the universe and provide information on newly forming stars (Mission Science, para 1-7).
Practical application of UV-light is the study of the galaxy where scientists use Ultraviolet Imaging Telescope to investigate the differences between newly formed and older stars. Due to differing wavelengths, it is observed that the Ultraviolet Imaging Telescope results show that optical and ultraviolet wavelengths affect how bright a star shines (Gam Products Inc.