NATS 1870 Lecture Notes - Lecture 2: Bohr Model, Photon, Nanometre
24 Oct 2017
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Document Summary
Light is a phenomenon in nature (dual nature, sometimes behaves like a wave sometimes like a particle) Light has a wavelength which is the distance from one feet to the next. Unit of length = nanometer (nm) billionth of a metre (very small) All light waves travel through empty space at the same speed. Frequency (f) = number of peaks that pass in 1 second. Shortest to longest wavelength and highest to lowest frequency and highest energy to lowest energy= gamma rays, x rays , uv rays, visible light, infrared and radio waves. Usually talk about energy when talking about light as a particle. Colour (or the light rays re ected off an object) results from the way the light rays interact with matter. Atoms are made from protons & neutrons (in the nucleus) orbited by electrons. The movement of charge is what generates light at any wavelength (if you have a moving charge, there is light being generated)
