Question

The question might have been asked before. Our Sun's rays decompose into 7 elementary colors by using a prism or spectrometry. Can the the colors (their number and wave length in the spectrum ) be found by any other means of observation or instrumented measurement?

Are any stars outside the solar system in the universe known which have more or less than 7 colors and their spectral wavelengths ? Are they also known to have some electromagnetic properties?

Answer 1

Yes, spectrographs can be used to observe and measure the colors and spectral wavelengths of stars. Spectroscopic analysis allows astronomers to determine the chemical composition and temperature of stars. Joseph Fraunhofer discovered dark lines in the Sun's spectrum, which led to the development of spectroscopy as a powerful tool in astronomy.

Step-by-step explanation:

Yes, the colors and their spectral wavelengths can also be observed and measured using spectrographs. Spectrographs allow astronomers to spread out the light into a spectrum and analyze it in detail. In the 1810s, Joseph Fraunhofer observed dark lines crossing the Sun's spectrum and later identified them as absorption lines caused by atoms in the solar atmosphere. These dark lines can be used to determine the chemical composition of stars and their temperatures. Spectroscopic analysis is a vital tool in astronomy and has contributed greatly to our understanding of the universe.