How to use the prism minimum deviation calculator
Find the minimum deviation angle of light passing through a prism. Enter refractive index, prism apex angle in the fields above; the minimum deviation angle is computed instantly and plotted on the chart so you can see how the answer changes.
Common searches this calculator answers include “prism deviation”, “minimum deviation prism”, “glass prism bending angle”, “calculate prism minimum deviation”, “find minimum deviation angle”.
Formula
Variables
- n — Refractive index
- A — Prism apex angle (°)
Worked example
With refractive index = 1.5, prism apex angle = 60 °, the calculator gives minimum deviation angle ≈ 37.18076 °.
Frequently asked questions
What is the prism minimum deviation calculator used for?
Find the minimum deviation angle of light passing through a prism. It helps with questions such as “prism deviation”, “minimum deviation prism”, “glass prism bending angle”.
What is the formula for the prism minimum deviation calculation?
Minimum deviation angle (°) = 2 × asin(n × sin(A / 2))-A. Here n is refractive index, A is prism apex angle (°).
What inputs do I need for the prism minimum deviation calculator?
You need refractive index, prism apex angle in °. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use the prism minimum deviation calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the prism minimum deviation result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.