Model maxima with precise unit controls and conversions. Use slit, grating, and screen geometry tools. Solve optics experiments with reliable angle insights every time.
The calculator supports both single-slit and diffraction-grating analysis. It converts all measurements to meters, adjusts wavelength for the medium, then solves the trigonometric diffraction relation.
Here, a or d is slit width or grating spacing, θ is diffraction angle, α is incident angle, m is diffraction order, and λ is wavelength in the medium.
| Case | Model | Wavelength | Spacing / Width | Order | Incident Angle | Expected Angle |
|---|---|---|---|---|---|---|
| Laser Grating | Grating Maximum | 632.8 nm | 1.67 µm | 1 | 0° | 22.301° |
| Second Order | Grating Maximum | 532 nm | 1.67 µm | 2 | 0° | 39.590° |
| Single Slit | Minimum | 550 nm | 20 µm | 1 | 0° | 1.576° |
It computes diffraction angle for a selected order using single-slit or grating relations. It also estimates screen position, path difference, and helpful geometry values.
Choose minimum for dark fringes in single-slit diffraction. Choose maximum for bright grating orders or for the approximate bright fringe estimate in single-slit work.
That happens when the sine argument exceeds plus or minus one. The chosen order is impossible for the entered wavelength, spacing, incidence angle, or medium.
Yes. The wavelength inside a medium becomes shorter by the refractive index. A shorter wavelength usually reduces the diffraction angle for the same setup.
No. Single-slit bright fringes are commonly estimated with an approximation. Dark fringes follow the exact minimum condition more directly and are better for precise work.
Screen position is the lateral displacement of the selected diffraction fringe from the center on a screen at the entered distance.
Yes. The calculator accepts nanometers through meters for wavelength and spacing, then converts everything internally before performing the diffraction calculation.
It captures the result section and saves it as a PDF-style report from your browser, which is useful for lab notes and quick sharing.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.