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Unformatted text preview: object. b) It can reveal information about the surface temperature of an object because they emit continuous spectrum of thermal raditaion that peaks at a wavelength which is determined by temperature. c) It can reveal information of gas composition from emission lines from the ultraviolet rays in the emission lines. d) It can reveal information about speed at which a planet is moving from the Doppler effect. 50. a) the sun would emit double the radiation b) it would be twice as high c) no we would not be able to survive the immense heat increase and dangerous rays 51. rest wavelength= 121.6 nm line in wavelength 121.9 at star c and 122.9 star d 121.9 nm -121.6 nm 121.6 = 24.68 x 10^-15 nm Star C is moving away from us 122.9-121.6 121.6 = 10. 7 x 10^-15 nm star D is moving away from us...
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- Spring '06