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Radiation energy emitted by black body per unit time and surface area Formula

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Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q". Check FAQs

q' = [Stefan-BoltZ] \cdot T^{4}

q' - Heat Flux?T - Temperature?[Stefan-BoltZ] - Stefan-Boltzmann Constant?

Radiation energy emitted by black body per unit time and surface area Example

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Here is how the Radiation energy emitted by black body per unit time and surface area equation looks like with Values.

Here is how the Radiation energy emitted by black body per unit time and surface area equation looks like with Units.

Here is how the Radiation energy emitted by black body per unit time and surface area equation looks like.

2.96 = 5.7E-8 \cdot 85^{4}

2.96W/m² = 5.7E-8 \cdot {85K}^{4}

2.96 = 5.7E-8 \cdot 85^{4}

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Radiation energy emitted by black body per unit time and surface area Solution

Follow our step by step solution on how to calculate Radiation energy emitted by black body per unit time and surface area?

FIRST Step Consider the formula

q' = [Stefan-BoltZ] \cdot T^{4}

Next Step Substitute values of Variables

∴

q' = [Stefan-BoltZ] \cdot {85K}^{4}

Next Step Substitute values of Constants

∴

q' = 5.7E-8 \cdot {85K}^{4}

Next Step Prepare to Evaluate

∴

q' = 5.7E-8 \cdot 85^{4}

Next Step Evaluate

∴

q' = 2.95996701379375W/m²

LAST Step Rounding Answer

∴

q' = 2.96W/m²

Radiation energy emitted by black body per unit time and surface area Formula Elements

Variables

Constants

Heat Flux

Heat Flux is the heat transfer rate per unit area normal to the direction of heat flow. It is denoted by the letter "q".

Symbol: q'

Measurement: Heat Flux DensityUnit: W/m²

Note: Value can be positive or negative.

Formulas to find Heat Flux

Temperature

Temperature is the degree or intensity of heat present in a substance or object.

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 Heat Emission due to Radiation category

Go Black Bodies Heat Exchange by Radiation

q = ε \cdot [Stefan-BoltZ] \cdot A \cdot ({T 1}^{4} - {T 2}^{4})

Go Heat Exchange by Radiation due to Geometric Arrangement

q = ε \cdot A \cdot [Stefan-BoltZ] \cdot SF \cdot ({T 1}^{4} - {T 2}^{4})

Go Non Ideal Body Surface Emittance

e = ε \cdot [Stefan-BoltZ] \cdot {T w}^{4}

Go Radiation energy emitted by black body in time interval given emissive power

E = E b \cdot SA \cdot N

How to Evaluate Radiation energy emitted by black body per unit time and surface area?

Radiation energy emitted by black body per unit time and surface area evaluator uses Heat Flux = [Stefan-BoltZ]*Temperature^4 to evaluate the Heat Flux, Radiation energy emitted by black body per unit time and surface area formula is defined as the total energy radiated per unit surface area of a black body in unit time, which is a measure of the energy emitted by an idealized perfect absorber of electromagnetic radiation. Heat Flux is denoted by q' symbol.

How to evaluate Radiation energy emitted by black body per unit time and surface area using this online evaluator? To use this online evaluator for Radiation energy emitted by black body per unit time and surface area, enter Temperature (T) and hit the calculate button.

FAQs on Radiation energy emitted by black body per unit time and surface area

What is the formula to find Radiation energy emitted by black body per unit time and surface area?

The formula of Radiation energy emitted by black body per unit time and surface area is expressed as Heat Flux = [Stefan-BoltZ]*Temperature^4. Here is an example- 2.959967 = [Stefan-BoltZ]*85^4.

How to calculate Radiation energy emitted by black body per unit time and surface area?

With Temperature (T) we can find Radiation energy emitted by black body per unit time and surface area using the formula - Heat Flux = [Stefan-BoltZ]*Temperature^4. This formula also uses Stefan-Boltzmann Constant .

Can the Radiation energy emitted by black body per unit time and surface area be negative?

Yes, the Radiation energy emitted by black body per unit time and surface area, measured in Heat Flux Density can be negative.

Which unit is used to measure Radiation energy emitted by black body per unit time and surface area?

Radiation energy emitted by black body per unit time and surface area is usually measured using the Watt per Square Meter[W/m²] for Heat Flux Density. Kilowatt per Square Meter[W/m²], Watt per Square Centimeter[W/m²], Watt per Square Inch[W/m²] are the few other units in which Radiation energy emitted by black body per unit time and surface area can be measured.

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