Ob-1 Matching Refractive Indices

Aim

To demonstrate that there is no reflection or change in refractive angle at a "boundary" where the refractive indices are equal.

Apparatus

  • Pyrex Beaker Large
  • Pyrex Beaker small
  • Johnson's Baby oil

Matching Refractive Indices

Matching Refractive Indices.

Description

A small Pyrex beaker is placed inside a larger Beaker and Baby Oil is poured into the smaller beaker till the oil overflows into the larger beaker. The oil has a refractive index equal in value to the refractive index of the Pyrex glass. It is seen that the close matching of the refractive indices make the smaller beaker practically invisible.

Video