Why do we assume that the refractive index of air is 1?

3 years ago

1 Reply

1855 views

Robyn Schmidt

1 Answer

James H Verified Sherpa Tutor ✓

Enthusiastic physics and maths tutor with 31 years experience

89 reviews

It is so close to 1 that when light is going from air to glass/water we can assume this. If in an exam they wanted you to use a value other than 1 they would have to give you it.

I'm available for 1:1 private online tuition!

Click here to view my profile and arrange a free introduction.

Think you can help?

Need an A-Level Physics tutor?

Get started with a free online introductions with an experienced and qualified online tutor on Sherpa.

Find an A-Level Physics Tutor