AS101 Chapter Notes - Chapter 4: Electromagnetic Spectrum, Electromagnetic Radiation, Black-Body Radiation
Document Summary
Light as wave and as particle: how light behaves depends on how you treat it-light has both wavelike and particle like properties. Light is composed of a combination of electric and magnetic waves that can travel through empty space. The speed of light, the speed of all electromagnetic radiation. You see a colour blur around every image, this colour separation is called chromatic aberration. Also, the glass in primary lenses must be pure and flawless because the light passes all the way through it: optical telescopes: gather visible light, radio telescopes: gather radio radiation. Spectrograph: spread the light out according to wavelength into a spectrum. A device that separates light by wavelengths to produce a spectrum. Different parts of the sun"s surface glow slightly different colours depending on their temperatures: an atom has a massive compact nucleus containing positively charged protons, usually accompanied by electrically neutral neutrons.
