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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.
What does line spectrum tell us?
The bright line emission spectrum tells us the amount of energy between the exited and ground state. When electrons move from an exited state to a ground state, radiant energy of a specific frequency is emitted this creates spectral lines.
What happen to the spectrum of a star moving toward the earth away from the earth?
If a star is moving towards Earth. The light is seen as 'blue shifted'. As we look at our sun, on the colour spectrum, black lines appear. When looking at distant stars, we can tell if they are moving away from us (Red shift) or getting closer to us (Blue shift). This is because the black lines shift to the red or blue end of the spectrum depending on which direction the star is travelling.
What characteristic of their an atom's light allows you to tell one atom from another?
first you must know what ROY G BIV is. that is the spectrum of visible light humans can see and it stands for Red Orange Yellow Green Blue Indigo Violet. the specific characteristic of light that allows you to tell one atom from another has to do with the fact that light travels in waves. each element gives off its own specific and unique light pattern and the different colors of visible light travel in different waves. the color red is the longest wave and violet is the shortest. so lets say hypothetically that you tested helium and you got red light, next you tested oxygen and you got yellow. this would indicate that the two atoms of the element are different because you got two different colors, and therefore two different wavelengths.
What is an absorption transmission spectrum and what does it tell you about pigments?
An absorption transmission spectrum shows how much light is absorbed by a pigment at different wavelengths. It provides information about which wavelengths of light the pigment absorbs most strongly, which can help identify the pigment and understand its color properties.
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 you describe an astronomical spectrum?
'Astronomical spectrum' is not a specific term. I suspect you are thinking of the emission spectrum of a star, which can tell us a great deal about the composition of the star. Light and other radiations from the object are spread out into constituent wavelengths and dark lines appear across the spectrum at certain specific wavelengths which are characteristic of elements present.
How can spectrum tell us if an object is reflecting blue light from a star?
how can you tell if an object is reflecting blue light from a star
How are light and astronomy related?
Studying light is one part of astronomy. Things like the speed of light, how it travels, the spectrum of light are all things that are used in studying astronomy. Studying light emitted from a star can tell us all sorts of things about it, like how far away it is and how bright it really is.
What does line spectrum tell us?
The bright line emission spectrum tells us the amount of energy between the exited and ground state. When electrons move from an exited state to a ground state, radiant energy of a specific frequency is emitted this creates spectral lines.
How do scientists tell if a star is warm or cold?
Scientists determine a star's temperature by analyzing its spectrum of light. The color and intensity of certain lines in a star's spectrum reveal its temperature. Hotter stars appear blue or white, while cooler stars appear red.
Why is there a line spectrum over a continuous spectrum in a spectroscope?
The lines in a spectroscope tell what element(s) are being observed. The continuous color are background noise or put there for a reference.
How can astronomers tell what a distant object is made of?
Astronomers are able to identify chemicals in distant space with the use of spectral analysis. This breaks the light apart into a spectrum and find either emission lines or absorption lines and identifies which elements are present.
What conditions produce a dark-line spectrum?
An absorption spectrum can tell the astronomer or physicist what elements are in the starlight being observed. A diffraction grating is used to split the incoming light into a spectrum of colors. Sodium, for example, causes dark Fraunhofer lines at known points in the visible spectrum. Helium was discovered in the solar spectrum by Bunsen and Kirchoff using this technique. Hence the name derived from Helios for the Sun.
Galaxies that show redshift in color must be red in color?
No. You can figure out exactly what elements are in stars and galaxies by examining the color spectrum of the light detected; the frequencies of the bright and dark lines in the spectrum tell you what's what. But there's a problem. For distant galaxies, the light spectrum is wrong. The frequency lines of the spectrum are all too low. One possible explanation of the incorrect spectrum is that those stars and galaxies are MOVING AWAY from us, and that the spectrum is shifted toward the red end of the color spectrum because of the Doppler effect. So scientists believe that the "red-shift" on the color spectrum of stars and galaxies indicate that they are moving away. Not all galaxies show a red-shift; the Andromeda Galaxy, M31, shows a pronounced BLUE-shift, indicating that it is heading TOWARD us. In fact, scientists believe that the Milky Way and Andromeda will probably collide in about 3 billion years.
Why dark line appears in absorption spectrum?
Dark lines in an absorption spectrum are caused by material existing between the source of light and the observation point. This material can absorb light from the source at specific energies corresponding to the excitation energies of the molecules, atoms, or ions making up the material.
What do the colors in a line spectrum represent?
Colors in a spectrum represent different frequencies of light. Light is formed when a particular atom or molecule is stimulated by some energy input - the energy forces an electron to jump to a higher level of excitation. When the electron falls back to its normal state it releases that energy as a photon of light, one that has a particular frequency determined by the atom or molecule and the amount of energy that the electron absorbed. So, when looking at a line spectrum (of, say, the light from a distant star) the color lines show the particular wavelengths of light that the star is giving off, which tell scientists a lot about what elements and compounds are in the star.
