Maxwell2539
18.03.2021 •
Physics
The form of energy commonly called light is transferred by
waves
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Ответ:
it would be electromagnetic waves
Ответ:
composition of stars
surface temperatures
Explanation:
A spectrograph is used by astronomers to find to the composition of stars and surface temperature.
The emission or absorption spectra tells the composition of stars- the elements present in it. Elements absorb/emit particular wavelength.
Using the peak wavelength of from the spectrum obtained, surface temperature can be calculated using Wein's law.
Spectrograph is not used to measure the distance but the motion of the stars. The motion is indicated by red-shift and blue-shift.