Respuesta :
Explanation:
Objects in the universe send out an enormous range of electromagnetic radiation. Scientists call this range the electromagnetic spectrum, which they have divided into a number of categories
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- From different wavelengths we can create a electromagnetic spectrum .
- From spectral lines of that electromagnetic spectrum astronomers can determine the element in the farther universe (star).
- They can also determine the temperature and density of that element in the star.
- The spectral lines in the electromagnetic spectrum tell us about any magnetic field of the star.
A useful formula of wavelength:
[tex]\\ \sf\longmapsto \lambda=\dfrac{c}{v}[/tex]
- wavelength is the length 7 of wave having SI unit lambda