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Will everyone see all the lines in all the emission spectra of these elements?
Wiki User
∙ 7y ago
Many catalogues of emission spectroscopy lines are published. These lines are not visible on all types of instruments.
Wiki User
∙ 7y ago
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What is the difference between absorption and emission spectrum?
Emission spectrum: lines emitted from an atom.Absorption spectrum: absorbed wavelengths of a molecule.
Can both Rutherford and Bohrs model of the atom explain spectra lines of elements?
Bohr model explain these spectra.
How do astronimers determine the composition of a star?
The chemical composition of stars is determined by the emission lines present in the light from stars. The emission lines are characteristic of a given element. However, because of the Doppler effect and the numerous emission lines of some elements, this technique can be more difficult in practice than it appears.
How do you astronomers use spectra to determine the composition of a star?
They pass the light from a star into a diffraction grating, I believe, to give a widely spread out spectrum of the star's light. The elements and compounds present will of course emit (or absorb, I don't remember) light at specific wavelengths, thus identifying the elements present.
Why do stellar spectra have absorption lines?
Need a different, better answer.
How would the spectra from galaxies appear?
They have broad emission lines of highly ionized elements.
How do scientists use different spectra to figure out the composition of the stars outer layer?
Different chemical elements emit (or absorb) certain specific frequencies of light. When the light from a star is split in to it's rainbow spectrum of light, certain parts of the spectrum will be black (in absorption spectra) or brighter (in emission spectra). By comparing these lines to the known emission and absorption spectra of elements, the composition of a stars atmosphere can be determined.
What are the similarities between emission and absorption spectra?
The lines are at the same frequencies
Why did each compound produce a flame of a different color?
Different elements have different emission spectra, meaning that if the electrons in an atom are excited, they will release that energy in different color of light. The flame color depends on the elements in the compound.
Which scientists postulated that the sharp lines in the emission spectra of elements are caused by electrons moving from high energy levels to low energy levels?
Niels Bohr
Do lines of a particular element appear at the same wavelength in both emission and absorption line spectra?
Yes.
What is the difference between absorption and emission spectrum?
Emission spectrum: lines emitted from an atom.Absorption spectrum: absorbed wavelengths of a molecule.
Can both Rutherford and Bohrs model of the atom explain spectra lines of elements?
Bohr model explain these spectra.
How can you Distinguish absorption spectrum from emission spectrum?
Emission spectra are bright-line spectra, absorption spectra are dark-line spectra. That is: an emission spectrum is a series of bright lines on a dark background. An absorption spectrum is a series of dark lines on a normal spectrum (rainbow) background.
Is the spacing between the lines in the spectrum of an element constant or does it vary?
The spacing between the lines in the spectrum of an element are constant. This is called the emission spectrum of an element. Each element has a unique emission spectra that will be the same each time.
Suppose you want to know the chemical composition of a distant star Which piece of information is most useful to you?
A telescope, whose light output would be sent through a spectral analysis machine of some type. That analysis of the emission spectra of the star would be compared to the known spectra of the elements to find the composition of the star.
What does the term bright line spectrum mean?
There are several kinds of spectra. Bright line spectrum, or emission spectrum, is when light emitted by a gas has an electrical discharge going through it, and it produces a spectrum of just a few isolated parallel lines.
