Recent content by Yen Pham

yeah, I got it! Thank you so much^^

Hi, I'm Yen from Vietnam. I love physics and always ask questions in class instead of doing homework :smile: It's great to join with you!

I have studied about the formula of refractive index which is: . That means in the case of water which have μ =1 (approximate) and ε = 81, then n should be 9. But why we often use the value n = 1.33 for water ? Who can explain for me? I don't think the above formula is wrong, of course!