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Diffraction Calculator
Single slit diffraction minima and grating angles for a given wavelength.
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Angle of minimum
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Single slit diffraction minima and grating angles for a given wavelength.
Diffraction Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: a sin(theta) = m lambda.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Diffraction Quick Guide
Typical values for reference.
| Wavelength nm | Slit um | Order | Angle |
|---|---|---|---|
| 550 | 10 | 1 | 3.153 deg |
| 400 | 5 | 1 | 4.589 deg |
| 700 | 20 | 2 | 4.014 deg |
| 500 | 2 | 1 | 14.478 deg |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Diffraction Calculator FAQ
Answers to common questions about this calculator.
The bending of waves around obstacles or through slits.
At a sin theta = m lambda.
Yes.
Red.