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What are dark lines in a stellar spectrum called?
The dark lines are absorption spectrum, the energy absorbed by Atoms in the atmosphere of the star. ================================ Fraunhofer's spectral lines.
The spectrum of a star is called a what?
... a photonic 'fingerprint'. The picture of a star's spectral lines is its photo-spectrograph.
Does Every element and compound in nature have a unique set of spectral lines?
Elements have several spectral lines and although some lines may be the same between different elements most lines are not and the whole spectrum for each element is indeed unique.
Is it true that each element has a unique set of lines on a spectrum?
Yes, each element has a unique set of spectral lines because the lines are determined by the energy levels of the electrons in that specific element. This uniqueness allows scientists to identify elements based on their spectral signature.
What diagram best represents the pattern of spectral lines from the same element when it was observed by Edwin Hubble in the light of one of the distant galaxies?
The best diagram to represent the pattern of spectral lines from the same element observed by Edwin Hubble in the light of distant galaxies is the redshift spectrum. This spectrum shows the spectral lines of elements shifted toward longer wavelengths (redshifted) due to the Doppler effect, indicating that the galaxies are moving away from us. The pattern of these lines remains consistent with the element's known absorption or emission spectrum, but the entire set of lines shifts uniformly to the red, reflecting the expansion of the universe.
What are dark lines in a stellar spectrum called?
The dark lines are absorption spectrum, the energy absorbed by Atoms in the atmosphere of the star. ================================ Fraunhofer's spectral lines.
Does the velocity of a star toward or away from earth determine measuring the shift of its spectral lines?
Yes. If the star is moving away from the Earth, its spectral lines will shift towards the red end of the spectrum. If it is moving towards the Earth, its spectral lines will shift towards the violet end of the spectrum. This is due to Doppler effect.
How does the spectrum of a molecule differ from spectrum of a atom?
A molecule has additional spectral lines due to changes in its rotational and vibrational energies.
Which stellar spectral type has the largest number of prominent absorption lines in an optical spectrum?
M
The spectrum of a star is called a what?
... a photonic 'fingerprint'. The picture of a star's spectral lines is its photo-spectrograph.
Does Every element and compound in nature have a unique set of spectral lines?
Elements have several spectral lines and although some lines may be the same between different elements most lines are not and the whole spectrum for each element is indeed unique.
What evidence do you have the sun contains the element iron?
The spectral lines. Each element has a characteristic "fingerprint" in a spectrum.
The spectral lines of elements when observed in distant galaxies show a shift towards?
The red end of the spectrum.
If a star's spectrum does not contain spectral lines characteristic of a certain element can we conclude that the star do not contain that element Why or Why not?
Not necessarily. The absence of specific spectral lines could be due to factors like the star's temperature, composition, or magnetic fields affecting the spectral lines. It could also be that the element is present in trace amounts that are not detectable in the spectrum.
How can elements with low atomic number (like Hydrogen) have so many spectral lines?
Elements with low atomic number can have many spectral lines because their electrons can transition between different energy levels in multiple ways. These transitions result in the emission or absorption of photons with different wavelengths, leading to a variety of spectral lines in the electromagnetic spectrum. In the case of hydrogen, the simple structure of its atom allows for many possible energy level transitions, giving rise to a rich spectrum of spectral lines.
Is it true that each element has a unique set of lines on a spectrum?
Yes, each element has a unique set of spectral lines because the lines are determined by the energy levels of the electrons in that specific element. This uniqueness allows scientists to identify elements based on their spectral signature.
How much do astronomers use spectral analysis to classify stars?
Astronomers use the patterns of lines observed in stellar spectra to sort stars into a spectral class. Because a star’s temperature determines which absorption lines are present in its spectrum, these spectral classes are a measure of its surface temperature. There are seven standard spectral classes.
