Enter the emitted radiation and the blocked radiation into the Calculator. The calculator will evaluate the Emissivity.

## Emissivity Formula

E = ER / BR

Variables:

- E is the Emissivity ()
- ER is the emitted radiation
- BR is the blocked radiation

To calculate Emissivity, divide the emitted radiation by the blocked radiation.

## How to Calculate Emissivity?

The following steps outline how to calculate the Emissivity.

- First, determine the emitted radiation.
- Next, determine the blocked radiation.
- Next, gather the formula from above = E = ER / BR.
- Finally, calculate the Emissivity.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

emitted radiation = 50

blocked radiation = 60