Brewster Angle Calculator
Brewster angle, where reflected light is fully polarised, from the refractive indices of two media.
Compare Your Options And Get Clear Answers
Brewster angle, where reflected light is fully polarised, from the refractive indices of two media.
Brewster Angle Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Brewster Quick Guide
Typical values for reference.
| n1 | n2 | Brewster deg | Medium |
|---|---|---|---|
| 1.00 | 1.33 | 53.06 | Water |
| 1.00 | 1.52 | 56.66 | Glass |
| 1.00 | 2.42 | 67.54 | Diamond |
| 1.33 | 1.52 | 48.8 | Water-glass |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Brewster Angle Calculator FAQ
Answers to common questions about this calculator.
The incidence angle at which reflected light is completely polarised.
It lets you cut glare and make laser windows.
theta_B = arctan(n2 / n1).
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.