PCS 181 Chapter 1: Unit 1
28 Feb 2017
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Starlight we can figure out surface temp chemical composition. Motion where is it moving towards. Wavelength = distance between any two identical points. (peaks) Light: mutually perpendicular oscillating electric and magnetic fields. Light: moves in wavelike pattern at a speed of c = 3 x 108 m/s. No object with mass can move with the speed of light. Multi-verse theory: there are other universes with different physical laws, perhaps speed of light is lower. (cid:883) (cid:1866)(cid:1866)(cid:1867)(cid:1865)= (cid:883)(cid:1866)(cid:1865) = (cid:2869) x (cid:2869)(cid:2868)9m = (cid:883) (cid:883)(cid:882) (cid:2877)(cid:1865)= (cid:883)(cid:882) (cid:2877)(cid:1865) (cid:2869) Red = 700nm = 700 x 10-9m = 7 x 10-7m (know this for test) Violet = 400nm= 400 x 10-9m = 4 x10-7m (know this for test) yellow-green= 550nm (know this for test) People can"t see violet so we call it blue. Photons: bundles of energy --> light as a particle. Take light and pass it through a prism it creates a spectrum.
