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beam divergence |
Also found in: Wikipedia | 0.02 sec. |
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beam divergence [′bēm də‚vər·jəns] (optics) The angle between points on opposite sides of a light beam at which the irradiance drops to 1/e(0.37) times its maximum value. (physics) The angular spread in the directions of the components of a beam of particles or radiation. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Target dependent neutron scattering effects introduce changes in beam divergence or path length that behave like target dependent magnetic field rotations. The FSO system provides excellent reliability through its patented pointing and tracking technology and exceptionally high security due to its narrow beam divergence. Because the K-Tek laser wavelength is only 1 micron, as opposed to radar's wavelength of 10,000+ microns, it reportedly has virtually no beam divergence, which means no false echoes, and easily measures surfaces at an angle. |
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