Enter the incident intensity and the transmitted intensity into the calculator to determine the transmittance. Transmittance is a measure of how much light passes through a substance.
Transmittance Formula
The following formula is used to calculate the transmittance:
T = I / I₀
Variables:
- T is the transmittance (unitless)
- I is the transmitted intensity (same units as I₀)
- I₀ is the incident intensity (same units as I)
To calculate transmittance, divide the transmitted intensity by the incident intensity.
What is Transmittance?
Transmittance is the fraction of incident light or other electromagnetic radiation that passes through a material. It is an important parameter in fields such as chemistry, physics, and engineering, particularly in the study of spectroscopy, optics, and solar energy. A higher transmittance value indicates that more light is passing through the material, while a lower value indicates that more light is being absorbed or reflected by the material.
How to Calculate Transmittance?
The following steps outline how to calculate the transmittance:
- First, measure or determine the incident intensity (I₀).
- Next, measure or determine the transmitted intensity (I).
- Use the formula T = I / I₀ to calculate the transmittance (T).
- Finally, compare the calculated transmittance with the value obtained using the calculator above.
Example Problem:
Use the following variables as an example problem to test your knowledge.
Incident intensity (I₀) = 100 units
Transmitted intensity (I) = 60 units
