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Ultraviolet light is a form of electromagnetic radiation that causes sunburns and the glowing effect on black-light posters. However, excessive UV radiation exposure harms living tissue. The sun emits electromagnetic radiation, transmitted as waves or particles with various wavelengths and frequencies. The electromagnetic (EM) spectrum refers to this wide range of wavelengths. Typically, the spectrum is divided into seven regions in ascending order of rising energy, rising frequency, and falling wavelength. Similar names for these radiation types include radio waves, microwaves, infrared (IR), visible light, ultraviolet (UV), X-rays, and gamma rays. In the electromagnetic (EM) spectrum, ultraviolet (UV) light lies between visible light and X-rays. It has wavelengths ranging from 380 nanometers (1.5 105 inches) to around 10 nm (4 107 inches), and its frequencies range from about 8 1014 to 3 1016 cycles per second, or hertz (Hz). UV is often classified into three sub-bands: UVA, or near ...

Digitalization is taking over the world so fast. Upcoming generations will be unaware of many traditional goods, which will be replaced by modern devices. That’s where the question comes, where will these pens stand in the upcoming future? It is not very simple to replace pens because they have engrossed their worth in the generations for so many years. You can’t start schooling without a pen or pencil. It helps a child to write his or her first word on paper. An academic career starts with a pencil, which is a similar tool to a pen. Many artists in the world still use pens to draw mesmerizing art, which they sell for thousands and millions of dollars. All the stationery businesses keep the flow of inventory with a pencil manufacturer to fulfill a high demand. This high demand comes from the academic, corporate, and government sectors. You can never replace these pens so easily and to know their worth, have a look at these reasons below.  Poets and Writers Know the Worth of a Pe...