Ob-1 Matching Refractive Indices


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


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

Matching Refractive Indices

Matching Refractive Indices.


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.