Question
What are stars? Omission spectrum tells us about a star
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Stars are celestial bodies made up of hot, glowing gases, primarily hydrogen and helium. They are held together by their own gravitational pull and produce energy through nuclear fusion processes in their cores.
An emission spectrum is a way to analyze the light emitted by a star. When the light from a star is passed through a prism or a diffraction grating, it gets spread out into its component colors, forming a spectrum. An emission spectrum consists of bright lines or bands of colors at specific wavelengths, which correspond to the energies of the emitted photons.
By observing the emission spectrum of a star, scientists can gain valuable information about its composition and physical properties. Each element in the star's atmosphere absorbs specific wavelengths of light, resulting in dark lines or gaps in the otherwise continuous spectrum. These dark lines, known as absorption lines or an absorption spectrum, act as fingerprints revealing the presence of certain elements in the star.
The positions and intensities of the absorption lines in a star's spectrum help astronomers determine its chemical composition, temperature, and sometimes even its motion. By comparing the observed spectra of stars with known patterns or reference spectra, scientists can identify the elements present in the star and study its characteristics in detail. The emission and absorption lines in a star's spectrum provide crucial insights into its nature and help unravel the mysteries of the universe.
An emission spectrum is a way to analyze the light emitted by a star. When the light from a star is passed through a prism or a diffraction grating, it gets spread out into its component colors, forming a spectrum. An emission spectrum consists of bright lines or bands of colors at specific wavelengths, which correspond to the energies of the emitted photons.
By observing the emission spectrum of a star, scientists can gain valuable information about its composition and physical properties. Each element in the star's atmosphere absorbs specific wavelengths of light, resulting in dark lines or gaps in the otherwise continuous spectrum. These dark lines, known as absorption lines or an absorption spectrum, act as fingerprints revealing the presence of certain elements in the star.
The positions and intensities of the absorption lines in a star's spectrum help astronomers determine its chemical composition, temperature, and sometimes even its motion. By comparing the observed spectra of stars with known patterns or reference spectra, scientists can identify the elements present in the star and study its characteristics in detail. The emission and absorption lines in a star's spectrum provide crucial insights into its nature and help unravel the mysteries of the universe.