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| Description: Wave model Wavelengths of radiation vary Radio waves measure up to several kilometers long Gamma ray waves are less than a billionth of a centimeter long White light consists of several wavelengths corresponding to the colors of the rainbow Particle model Particles called photons Exert a pressure, called radiation pressure, on matter Shorter wavelengths correspond to more energetic photons Spectroscopy The study of the properties of light that depend on wavelength The light pattern produced by passing light through a prism, which spreads out the various wavelengths, is called a spectrum (plural: spectra) Types of spectra Continuous spectrum Produced by an incandescent solid, liquid, or high pressure gas Uninterrupted band of color Dark-line (absorption) spectrum Produced when white light is passed through a comparatively cool, low pressure gas Appears as a continuous spectrum but with dark lines running through it Bright-line (emission) spectrum Produced by a hot (incandescent) gas under low pressure Appears as a series of bright lines of particular wavelengths depending on the gas that produced them Picture Stats: Views: 317 Filesize: 103.89kB Height: 681 Width: 1431 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=39768 |