Questions tagged [temperature]
Temperature is a measurement of the average kinetic energy of the molecules in an object or system. In simpler words: it's the degree or intensity of heat present in a substance or object that is commonly measured with a thermometer.
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Wien's law gives two different results?
Say I have a star with radius $R$ and luminosity $L$. I want to find the frequency of its peak emission.
Taking the star as a perfect blackbody, we can use Stefan-Boltzman to see that
$$L = 4\pi R^2\...
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How did the temperature of the solar system evolve?
As a child, I've read that stars ignite during a so-called "nuclear flash". I understood this as a very violent outburst of energy from the sun, causing all dust between the protoplanets to ...
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Is there a formula for calculating surface temperature of a rocky world based on atmosphere and solar input?
For example, a thicker atmosphere would probably lead to less temperature variation . . . I assume that much is obvious. And, greenhouse gases trap heat.
But when posed with a question like "...
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When did Venus get as hot as it is now?
My previous question turned out to not ask the question I thought I was asking.
I have read that Venus began its heating-up around 700-750 million years ago.
When did the Venusian atmosphere get ...
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When did Venus reach approximate radiation equilibrium?
I have read that Venus is roughly at radiation equilibrium - that is, heat out is approximately equal to heat in. I have also read that Venus began its heating-up around 700-750 million years ago.
My ...
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On a theoretical young tidally locked planet and its relationship with temperature
I have a question regarding tidally locked planets, regarding the length it takes to reach a certain temperature.
How would one calculate the estimated temperature after a certain amount of time being ...
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Public data for calculating equilibrium temperature of exoplanets
I am a high school student beginning a simple independent project to calculate the equilibrium temperature of exoplanets. I'm curious to see how many exoplanets have a similar equilibrium temperature ...
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Is the Sun hotter today, in terms of absolute temperature (i.e., NOT total luminosity), than it was in the distant past?
I am constantly reading that the Sun is at least 20% 'hotter', in terms of total radiation/luminosity, than it was a few million years after its formation (i.e., after the Hayashi stage...)
But what ...
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the sun - relationship between gravity and temperature
In the sun's core, we know it's very hot.
I was curious to research why it was exactly and I think 99% of answers are not fully correct. They say that it's because of nuclear fusions.
I'd not agree as ...
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How to calculate the day/permanently dark/night temperatures of different surfaces for exoplanets?
I am trying to calculate the different temperatures (day, night, permanent day/night for tidally locked planets) for different surfaces of exoplanets like land, water, gas, ice.
I am using an ...
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Goldilocks Zone Temperature Range for Habitation
Is there a generally accepted Kelvin temperature range for exoplanets habitable zone. So for example, I can look at for example, http://exoplanet.eu/catalog/toi-2134_b/ and say the planet is in the ...
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Temperature of a gas giant 23 AU from Fomalhaut
If a gas giant, weighing about 30 Jupiter masses, orbited the A-type star Fomalhaut at 23 AU, what would its temperature be? Would it be warm enough to have ammonia clouds like Jupiter or Saturn, or ...
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Is the solar system barycenter affecting the Earth weather?
I do not have the numbers but I guess the solar system barycenter should move much more than the Earth radius, and if that is correct then it should not be affecting the Earth's temperature.
I mean, ...
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Which star has a higher effective temperature, a red dwarf or a red giant?
According to the Hertzsprung-Russell diagram, they would roughly have the same temperature, but I've read in bibliography that the surface temperature of the red giant is about 5000K
and the one of ...
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How hot would the core of the Red Giant Sun be?
After the Sun becomes a red giant, it will heat up its core to 100 million kelvins, which initiates the Triple-Alpha fusion process, which heats up the star's core even further and cause it to undergo ...
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