How to Calculate and Solve for Reflectivity | Optical Properties
Last Updated on July 17, 2022
The reflectivity is illustrated by the image below.
To compute for reflectivity, two essential parameters are needed and these parameters are Intensity of Reflected Beam (IR) and Intensity of Incident Beam (Io).
The formula for calculating reflectivity:
R = IR/Io
Where:
R = Reflectivity
IR = Intensity of Reflected Beam
Io = Intensity of Incident Beam
Given an example;
Find the reflectivity when the intensity of reflected beam is 12 and the intensity of incident beam is 6.
This implies that;
IR = Intensity of Reflected Beam = 12
Io = Intensity of Incident Beam = 6
R = IR/Io
R = 12/6
R = 2
Therefore, the reflectivity is 2.
Calculating the Intensity of Reflected Beam when the Reflectivity and the Intensity of Incident Beam is Given.
IR = R (Io)
Where:
IR = Intensity of Reflected Beam
R = Reflectivity
Io = Intensity of Incident Beam
Let’s solve an example;
Find the intensity of reflected beam when the reflectivity is 12 and the intensity of incident beam is 4.
This implies that;
R = Reflectivity = 12
Io = Intensity of Incident Beam = 4
IR = R (Io)
IR = 12 (4)
IR = 48
Therefore, the intensity of reflected beam is 48.
Calculating the Intensity of Incident Beam when the Reflectivity and the Intensity of Reflected Beam is Given.
Io = IR / R
Where:
Io = Intensity of Incident Beam
R = Reflectivity
IR = Intensity of Reflected Beam
Let’s solve an example;
Find the intensity of incident beam when the reflectivity is 15 and the intensity of reflected beam is 60.
This implies that;
R = Reflectivity = 15
IR = Intensity of Reflected Beam = 60
Io = IR / R
Io = 60 / 15
Io = 4
Therefore, the intensity of incident beam is 4.
Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the reflectivity.
To get the answer and workings of the reflectivity using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app.
You can get this app via any of these means:
Web – https://www.nickzom.org/calculator-plus
To get access to the professional version via web, you need to register and subscribe to have utter access to all functionalities.
You can also try the demo version via https://www.nickzom.org/calculator
Android (Paid) – https://play.google.com/store/apps/details?id=org.nickzom.nickzomcalculator
Android (Free) – https://play.google.com/store/apps/details?id=com.nickzom.nickzomcalculator
Apple (Paid) – https://itunes.apple.com/us/app/nickzom-calculator/id1331162702?mt=8
Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering.
Now, Click on Optical Properities under Materials and Metallurgical
Now, Click on Reflectivity under Optical Properities
The screenshot below displays the page or activity to enter your values, to get the answer for the reflectivity according to the respective parameter which is the Intensity of Reflected Beam (IR) and Intensity of Incident Beam (Io).
Now, enter the values appropriately and accordingly for the parameters as required by the Intensity of Reflected Beam (IR) is 12 and Intensity of Incident Beam (Io) is 6.
Finally, Click on Calculate
As you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the reflectivity and presents the formula, workings and steps too.
