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Why are the hydrogen Balmer lines strong in the spectra of medium temperature stars and weak in the spectra of hot and cool stars?
Wiki User
∙ 12y ago
Balmer lines are produced by colliding hydrogen atoms with electrons excited to 2nd energy level.
Cool stars don't have enough collision to excite the electrons, hot stars have too much collision and excite the electrons beyond 2nd energy level.
Wiki User
∙ 12y ago
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Why are the hydrogen Balmer lines strong in the spectra of medium-temperature stars and weak in the spectra of hot and cool stars?
They are like this due to the fact that most hydrogen atoms are ionized which makes a weaker balmer line. The strength of the Balmer line is sensitive to temperature so that's why it occurs more in the middle. The hot end of the hydrogen is low Balmer line due to them being in the ground state. Hope that's answers it =] -CRS
What is the most abundant element in the interstellar medium?
Hydrogen
What is the temperature of the medium star?
You'll have to be more specific; I don't have any idea what a "medium" star is supposed to be. A star's color depends on its surface temperature, if that helps.
What is a medium size yellow star composed mostly of hydrogen and helium?
All stars are composed mostly of hydrogen. The star fuses hydrogen into helium. The helium cannot escape the start until the end of the star's life cycle. Thus a middle-aged, medium sized star will be comprised of hydrogen and helium. As the star ages, it may start to fuse helium at its core into carbon. At this point it will likely expand into a red giant star, and thus would no longer be yellow.
What controls the color of a star?
The color of a star depends on its surface temperature. But hot stars are blue, and medium-hot stars are white, and cool stars are red.
Why are the hydrogen Balmer lines strong in the spectra of medium-temperature stars and weak in the spectra of hot and cool stars?
They are like this due to the fact that most hydrogen atoms are ionized which makes a weaker balmer line. The strength of the Balmer line is sensitive to temperature so that's why it occurs more in the middle. The hot end of the hydrogen is low Balmer line due to them being in the ground state. Hope that's answers it =] -CRS
What Spectral Class does Medium-strength Balmer lines strong helium lines belong to?
a balmer line is the ghostly remnants of a poltergeist. They float around your house and murder your pet kitten.
Why hydrogen chloride is a liquid while hydrogen chloride is a gas?
At the standard temperature and pressure, hydrogen chloride exists as a gas. It does not exist in liquid state, but in aqueous medium along with water as a solvent.
What is the average medium temperature of Celsius?
There is no such thing as the average medium temperature.
What is the medium for regulating body temperature?
medium for regulating body temperature is water
What is a soil medium?
soil medium is medium soil... which is medium temperature(i think)
What is medium cooking?
its when you cook on a medium temperature
Why does the speed of sound change if the temperature of the medium change?
because the density of the medium changes with temprature
When the temperature of a medium increases the speed of sound decreases true or false?
No it is not true. When the temperature of the medium increases the speed of sound in that medium increases.
What are some examples of medium breakfast?
temperature,medium and density
What is the most abundant element in the interstellar medium?
Hydrogen
What is the effect on the speed of light when temperatures rise in the medium?
When temperature rises, the density of the medium changes. Speed of light through a medium is inversely proportional to the density of medium. So when the temperature increases, the density decreases and the speed of light in that medium increases. Note that this is the indirect effect of temperature. If light is travelling through vaccuum , then the temperature will have no effect on the speed of light.
