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The light generated by stars is mostly generated by hydrogen fusion. The light emitted from hydrogen has a distinctive emission spectrum. The emission spectrum undergoes shifting when the source and the receiver (Hubble) are moving in relation to each other. The spectrum will shift to the higher frequencies and shorter wavelengths ("blue shift") when the source and receiver are moving towards each other. Due to the "fact" that the universe is expanding, the source and receiver are moving away from each other. This causes the emission spectrum to shift to lower frequencies and longer wavelengths ("red shift"). The amount of red shift is an indication of the rate at which the cource and the receiver are moving away from each other. The expanding of the universe implies that the farther a source is from the receiver, the farther away the source and receiver are from each other. The red shifts of current objects have estimated that the farthest objects that we see are ~10-15 (not sure of exact number) billion light years distant from earth.
As for absorption, the light emitted from a star that passes through gases of interspace and of planets will be absorbed at different wavelengths depending on the elements contained within the gas. This allows the determination of planetary atmospheres and intergalactic clouds.
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What kind of spectrum is used to determine the composition of a planet's atmosphere?
An absorption spectrum is typically used to determine the composition of a planet's atmosphere. This type of spectrum shows specific wavelengths of light that are absorbed by different gases in the atmosphere, allowing scientists to identify the presence of specific elements or compounds.
How can you tell the absorption lines in the photographic spectrum?
Absorption lines in a photographic spectrum appear as dark lines where specific wavelengths of light are absorbed by elements in a celestial object. These lines indicate the presence of elements in the object's atmosphere and can be identified by comparing their positions with known spectral lines of elements on Earth.
Can the pattern of dark lines recorded by a spectrograph be used to identify the elements that are in the stars atmosphere?
Yes. Dark lines are absorption lines, they are due to relatively cool matter (such as that which might be found in a star's atmosphere as opposed to being in the body of the star itself), and each element has a characteristic pattern.
What does the absorption spectrum show us or tell us?
The absorption spectrum shows the specific wavelengths of light that are absorbed by a material, indicating the energy levels of electrons in the substance. By analyzing the absorption spectrum, scientists can identify the chemical composition of the material and understand its electronic structure.
Dark lines in an absorption spectrum are called?
Dark lines in an absorption spectrum are called absorption lines. These lines correspond to wavelengths of light that have been absorbed by specific elements or molecules in the sample being analyzed. They appear as dips or gaps in the spectrum where less light is detected.
What part of the star is responsible for the dark lines in its spectrum?
The dark lines in a star's spectrum are caused by absorption of specific wavelengths of light by the elements in the star's outer atmosphere. This absorption occurs when the elements in the atmosphere absorb photons of specific energies, leading to the creation of dark absorption lines in the spectrum.
How a star is similar to the sun if it has the same absorption lines in its spectrum that occur in the sun spectrum?
because they will have the same elements in the atmosphere...
How a star is similar to the sun if it has the same absorption lines in its spectrum that occur in the suns spectrum?
because they will have the same elements in the atmosphere...
Why is it often difficult to identify a stars elements from its absorption?
Because the spectrum consist of another element
What kind of spectrum is used to determine the composition of a planet's atmosphere?
An absorption spectrum is typically used to determine the composition of a planet's atmosphere. This type of spectrum shows specific wavelengths of light that are absorbed by different gases in the atmosphere, allowing scientists to identify the presence of specific elements or compounds.
What causes the creation of Fraunhofer lines in the Sun's electromagnetic spectrum?
Fraunhofer lines in the Sun's electromagnetic spectrum are caused by the absorption of specific wavelengths of light by elements in the Sun's atmosphere. These elements absorb light at certain frequencies, creating dark lines in the spectrum that help scientists identify the composition of the Sun.
What are the Dark lines that appear in a spectrum of light from a star called?
The dark lines that appear in a spectrum of light from a star are called absorption lines. These lines are caused by the absorption of specific wavelengths of light by elements in the outer atmosphere of the star. Absorption lines help astronomers identify the chemical composition of stars and other celestial objects.
How is a star simmular to the Sun if it has the same absorption lines in its spectrum that occur in the Sun's spectrum?
because they will have the same elements in the atmosphere...
How can you tell the absorption lines in the photographic spectrum?
Absorption lines in a photographic spectrum appear as dark lines where specific wavelengths of light are absorbed by elements in a celestial object. These lines indicate the presence of elements in the object's atmosphere and can be identified by comparing their positions with known spectral lines of elements on Earth.
When is an absorption spectrum produced?
An absorption spectrum is produced when a substance absorbs specific wavelengths of light as it passes through it. This absorption results in the dark lines or bands seen in the spectrum, which can be used to identify the elements present in the substance.
Can the pattern of dark lines recorded by a spectrograph be used to identify the elements that are in the stars atmosphere?
Yes. Dark lines are absorption lines, they are due to relatively cool matter (such as that which might be found in a star's atmosphere as opposed to being in the body of the star itself), and each element has a characteristic pattern.
An emission spectrum can be used to?
Identify elements
