Electromagnetic Spectrum

Electromagnetic Spectrum

1. The electromagnetic spectrum (in order of increasing wavelength) is: gamma rays, x-rays, ultraviolet, visible, infrared, microwaves, radio waves

   • frequency type of electromagnetic radiation wavelength highest gamma radiation shortest X-rays ultraviolet visible light infrared microwaves lowest radio waves

2. White light can be split up into a spectrum of many different colours and visible light is just part of a continuous spectrum of electromagnetic radiation. Different types of electromagnetic radiation have different hazards and uses.

   • What is a spectrum? The visible spectrum a rainbow appears to come out of the prism Refraction from a prism Using a prism, you can split up white light to form a spectrum. (A prism is a block of glass with a triangular cross-section.) The light waves are refracted as they enter and leave the prism. The shorter the wavelength of the light, the more it is refracted. As a result, red light is refracted the least and violet light is refracted the most, causing the coloured light to spread out to form a spectrum. The electromagnetic spectrum

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