PCS 181 Lecture Notes - London Academy Of Music And Dramatic Art, Electromagnetic Spectrum, Longwave

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Experiment sitting and watching for irish fairies. Conclusion grass is green because of the energy transforming. Astronomical information is transmitted by light they emit. Light: mutually perpendicular oscillating electric and magnetic fields. Light: moves in wavelike pattern at a speed of c=3*108 m/s. No object with mass can move at speed of light. Only light goes to speed of light. Tachyon particles that moves faster than light (hasn"t been discovered) Wavelength, lamda sign: distance between peaks of wave. 1 nanometer = 1nm = m = 1*10-9 m = 10-9 m. Lamda violet = 400nm = 400*10-9m = 4*10-7m(know this) When u join a bunch of colours the light is white. Short wave length gamma rays x rays- ultraviolet (hazardous. Shortest to longest gamma to radio waves. Frequency = f (the number of occurrences over some time period) Number of wave peaks passing a given point each second.

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