Stefan–Boltzmann law
The Stefan–Boltzmann law, also known as Stefan's law, describes the intensity of the thermal radiation emitted by matter in terms of that matter's temperature.
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Source: Wikipedia
Stefan–Boltzmann law
The Stefan–Boltzmann law, also known as Stefan's law, describes the intensity of the thermal radiation emitted by matter in terms of that matter's temperature.
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Source: Internal
Why does Stefan–Boltzmann law matter?
This principle is one of the building blocks physicists use to explain the world. Without it, a whole class of phenomena would have no mathematical description. Engineers, chemists, and astronomers all rely on it.
M
∘
=
σ
T
4
.
{\displaystyle M^{\circ }=\sigma \,T^{4}.}
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Source: Wikipedia
Background: Stefan–Boltzmann law
The Stefan–Boltzmann law, also known as Stefan's law, describes the intensity of the thermal radiation emitted by matter in terms of that matter's temperature. It is named for Josef Stefan, who empirically derived the relationship, and Ludwig Boltzmann who derived the law theoretically.
For an ideal absorber/emitter or black body, the Stefan–Boltzmann law states that the total energy radiated per unit surface area per unit time (also known as the radiant exitance) is directly proportional to the fourth power of the black body's temperature, T:
M
∘
=
σ
T
4
.
{\displaystyle M^{\circ }=\sigma \,T^{4}.}
The constant of proportionality,
σ
{\displaystyle \sigma }
, is called the Stefan–Boltzmann constant. It has the value
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