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Emissivity of Small Body given Emitted Radiation and Temperature Formula

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The Emissivity is a measure of a material's ability to emit energy as thermal radiation, reflecting its efficiency in radiating heat compared to a perfect black body. Check FAQs

ε = \frac{E emit}{[Stefan-BoltZ] \cdot (T^{4})}

ε - Emissivity?E_emit - Emitted Radiation?T - Temperature?[Stefan-BoltZ] - Stefan-Boltzmann Constant?

Emissivity of Small Body given Emitted Radiation and Temperature Example

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Here is how the Emissivity of Small Body given Emitted Radiation and Temperature equation looks like with Values.

Here is how the Emissivity of Small Body given Emitted Radiation and Temperature equation looks like with Units.

Here is how the Emissivity of Small Body given Emitted Radiation and Temperature equation looks like.

0.95 = \frac{2.812}{5.7E-8 \cdot (85^{4})}

0.95 = \frac{2.812W/m²}{5.7E-8 \cdot ({85K}^{4})}

0.95 = \frac{2.812}{5.7E-8 \cdot (85^{4})}

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Emissivity of Small Body given Emitted Radiation and Temperature Solution

Follow our step by step solution on how to calculate Emissivity of Small Body given Emitted Radiation and Temperature?

FIRST Step Consider the formula

ε = \frac{E emit}{[Stefan-BoltZ] \cdot (T^{4})}

Next Step Substitute values of Variables

∴

ε = \frac{2.812W/m²}{[Stefan-BoltZ] \cdot ({85K}^{4})}

Next Step Substitute values of Constants

∴

ε = \frac{2.812W/m²}{5.7E-8 \cdot ({85K}^{4})}

Next Step Prepare to Evaluate

∴

ε = \frac{2.812}{5.7E-8 \cdot (85^{4})}

Next Step Evaluate

∴

ε = 0.950000113817464

LAST Step Rounding Answer

∴

ε = 0.95

Emissivity of Small Body given Emitted Radiation and Temperature Formula Elements

Variables

Constants

Emissivity

The Emissivity is a measure of a material's ability to emit energy as thermal radiation, reflecting its efficiency in radiating heat compared to a perfect black body.

Symbol: ε

Measurement: NAUnit: Unitless

Note: Value should be between 0 to 1.

Formulas to find Emissivity

Emitted Radiation

The Emitted Radiation is the energy released by a surface in the form of electromagnetic waves, influenced by its temperature and material properties according to Kirchhoff's Law.

Symbol: E_emit

Measurement: Heat Flux DensityUnit: W/m²

Note: Value should be greater than 0.

Formulas to find Emitted Radiation

Temperature

The Temperature is a measure of the thermal energy of a system, indicating how hot or cold it is, and plays a crucial role in heat transfer processes.

Symbol: T

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Temperature

Stefan-Boltzmann Constant

Stefan-Boltzmann Constant relates the total energy radiated by a perfect black body to its temperature and is fundamental in understanding blackbody radiation and astrophysics.

Symbol: [Stefan-BoltZ]

Value: 5.670367E-8

Other formulas in Kirchhoff's Law category

Go Temperature of Small Body given Emissivity and Emitted Radiation

T = {(\frac{E emit}{ε \cdot [Stefan-BoltZ]})}^{0.25}

Go Temperature of Small Body using Absorptivity and Absorbed Radiation

T = {(\frac{G abs}{[Stefan-BoltZ] \cdot α})}^{0.25}

Go Radiation emitted by small body

E emit = ε \cdot [Stefan-BoltZ] \cdot (T^{4})

Go Radiation Absorbed by Small Body Per Unit of its Surface Area

G abs = α \cdot [Stefan-BoltZ] \cdot (T^{4})

How to Evaluate Emissivity of Small Body given Emitted Radiation and Temperature?

Emissivity of Small Body given Emitted Radiation and Temperature evaluator uses Emissivity = Emitted Radiation/([Stefan-BoltZ]*(Temperature^4)) to evaluate the Emissivity, Emissivity of Small Body given Emitted Radiation and Temperature formula is defined as a measure of the efficiency of a small body in emitting thermal radiation, which is a critical parameter in understanding the thermal behavior of objects and their interaction with the environment. Emissivity is denoted by ε symbol.

How to evaluate Emissivity of Small Body given Emitted Radiation and Temperature using this online evaluator? To use this online evaluator for Emissivity of Small Body given Emitted Radiation and Temperature, enter Emitted Radiation (E_emit) & Temperature (T) and hit the calculate button.

FAQs on Emissivity of Small Body given Emitted Radiation and Temperature

What is the formula to find Emissivity of Small Body given Emitted Radiation and Temperature?

The formula of Emissivity of Small Body given Emitted Radiation and Temperature is expressed as Emissivity = Emitted Radiation/([Stefan-BoltZ]*(Temperature^4)). Here is an example- 0.945956 = 2.811969/([Stefan-BoltZ]*(85^4)).

How to calculate Emissivity of Small Body given Emitted Radiation and Temperature?

With Emitted Radiation (E_emit) & Temperature (T) we can find Emissivity of Small Body given Emitted Radiation and Temperature using the formula - Emissivity = Emitted Radiation/([Stefan-BoltZ]*(Temperature^4)). This formula also uses Stefan-Boltzmann Constant .

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