Home » Ask Physics » Why dispersion does not occur in a glass slab?

Why dispersion does not occur in a glass slab?

Dispersion is the splitting up of white light (or a composite light) into its constituent colours.

Dispersion occurs when light is passed through a prism. The dispersion is caused due to the the difference in the angle of deviation for different colours.

In the case of a glass slab, the opposite sides are parallel and therefore different colors emerge parallel to each other and are seen simultaneously. Therefore, dispersion doesn’t occur in a glass slab.

In a prism, the dispersion occurring at one face in enhanced by the refraction at the other face, but in a glass slab the dispersion occurring at one face is neutralized by refraction at the other face.

Join the Forum discussion on this post

Visitors So Far @ AskPhysics

  • 2,080,116 hits

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 4,002 other subscribers

askphysics@Twitter

  • FTL (Faster Than Light) Communication https://t.co/3crfAyliqK https://t.co/wjBxIwLR9e
    about 2 months ago
%d bloggers like this: