Transcript of The Electromagnetic Spectrum
photo credit Nasa / Goddard Space Flight Center / Reto Stöckli The Electromagnetic Spectrum Gamma rays are given by stars and by some radioactive waves. Gamma rays are used for Radiotherapy to kill cancer cells. But they can cause cell damage and a variety of cancers. X-rays are given of by stars and strongly by some types of nebula. X-rays are also used by doctors, to see inside people. Or in airport security checks, to see what's inside your luggage. X-rays Infra red Visible lights Microwaves Ultraviolet waves are made from the sun but can also be made by special lamps. Ultra-violet can be used to kill microbes. But can cause cell damage and cancers. UltravioletWaves Gamma rays Infra red waves are given off by stars, lamps, flames and anything that's warm - even you. These waves are used for remote controllers and similar stuff. But people can also overheat with Infra-red radiation. Light waves are given of by anything that's hot enough to glow. We use light to see things. But too much light can damage the retina in your eyes. Microwaves are made by various types of transmitter. These waves can be used for different calls, satellite or even cooking food. In fact prolonged exposure to microwaves can causeFull transcript
cataracts, in your eyes. Radiowaves Radiowaves are made by various types of transmitters. They are mainly used for communication and radios. Also large doses can cause cancer.