10. WAVELENGTHS OF VISIBLE LIGHT. Visible light emitted or reflected from objects around us provides us information about the world. Infrared (IR) light is used by electrical heaters, cookers for cooking food, short-range communications like remote controls, optical fibres, security systems and thermal imaging cameras which detect people in the dark. eval(ez_write_tag([[336,280],'allusesof_com-box-4','ezslot_5',104,'0','0'])); Visible light can be used for signalling thorough the VLC (visible light communication). The military fighters do use it when going on missions in the dark to be able to identify their enemies clearly without their enemies seeing them. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. There is also a surgery called the laser surgery and that is used to cut tissues. Visible light occupies a tiny portion of the electromagnetic spectrum – about 0.0035 percent. High frequency microwaves have frequencies which are easily absorbed by molecules in food. What happens in this process is a doctor uses a laser, highly concentrating light on a tissue and cutting it. • 5. Visible light emitted or reflected from objects around us provides us information about the world. The revolution in the field of solid state lighting leads to the replacement of florescent lamps by Light Emitting Diodes (LEDs) which further motivates the usage of VLC. Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. The Uses of Light include. Anything that gives off waves or rays of light that we can see, is what is called visible light. Save my name, email, and website in this browser for the next time I comment. The phone screens would have been difficult to view if it was just the main waves of light. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Radio waves are transmitted easily through air. The differing behaviours of different groups in the electromagnetic spectrum make them suitable for a range of uses. Without visible light, there is no way we would be able to focus our eyes on the TV and watch movies and other entertainment. Visible light communication: Applications, architecture, standardization and research challenges. There are lights like an electric bulb, fireworks and other sources of light rays, with their shiny rays, we can see things and make a dark room visible. It is not possible to see molecules with visible light, because the wavelengths of visible light are very much longer than the usual molecular dimensions. Information is coded into the wave before transmission, which can then be decoded when the wave is received. With the headlights from vehicles and the traffic lights in the road, there is a vehicle to vehicle communication. Types of Blood Cells With Their Structure, and Functions, The Main Parts of a Plant With Their Functions, Parts of a Flower With Their Structure and Functions, Parts of a Leaf With Their Structure and Functions.
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