The diffraction pattern also only shows red light ... but this is good enough for a start. Solving the grating equation for the groove spacing gives d = λ / sin(θ). Recalling that sin(θ) ≈ x/L for ...

Q: What are diffraction gratings? A diffraction grating is an optical component for spectroscopy that splits light into different wavelengths. A typical diffraction grating has thousands of ...