Home » Optics » Why diffraction grating have closely spaced rulings?

Why diffraction grating have closely spaced rulings?


A diffraction grating is a glass plate having a large number of close parallel equidistant slits mechanically ruled on it.A diffraction grating is used to study the diffraction effects of light.

Since the phenomenon of diffraction is found to be prominent when the wavelength of light is large as compared with the size of the opening or aperture of the slit.Since the wavelength of visible light is very small ranging from 400 nm to 700 nm,so the diffraction grating have closely spaced rulings in order to compare the size of the incident light.A typical diffraction grating has about 400 to 5000 rulings per centimeter.

Related topics:

Diffraction grating

Difference between interference and diffraction

Diffraction of light


About admin

Leave a Reply

Your email address will not be published. Required fields are marked *


This site uses Akismet to reduce spam. Learn how your comment data is processed.


Check Also

Total internal reflection

Uses and applications of total internal reflection

What is total internal reflection? When a ray of light travelling in denser medium enters ...