BER'S MATH PROBLEM: The Refractive Index of Water

willydavidjr
Messages
66
Reaction score
0
Let n denote the refractive index of water. What fraction of the speed of the light in air is the speed of underwater light? Let \theta denote the critical angle for light going from water to air. Find the value of sin \theta.
 
Last edited:
Physics news on Phys.org
willydavidjr said:
Let n denote the refractive index of water. What fraction of the speed of the light in air is the speed of underwater light? Let \theta denote the critical angle for light going from water to air. Find the value of sin \theta.
I suggest that you look up Snell's law.

AM
 

Thread 'Initial conditions for orbits around a wormhole'

Hi, I had an exam and I completely messed up a problem. Especially one part which was necessary for the rest of the problem. Basically, I have a wormhole metric: $$(ds)^2 = -(dt)^2 + (dr)^2 + (r^2 + b^2)( (d\theta)^2 + sin^2 \theta (d\phi)^2 )$$ Where ##b=1## with an orbit only in the equatorial plane. We also know from the question that the orbit must satisfy this relationship: $$\varepsilon = \frac{1}{2} (\frac{dr}{d\tau})^2 + V_{eff}(r)$$ Ultimately, I was tasked to find the initial...
View full post »

Thread 'Help to convert units of a simple formula'

The value of H equals ## 10^{3}## in natural units, According to : https://en.wikipedia.org/wiki/Natural_units, ## t \sim 10^{-21} sec = 10^{21} Hz ##, and since ## \text{GeV} \sim 10^{24} \text{Hz } ##, ## GeV \sim 10^{24} \times 10^{-21} = 10^3 ## in natural units. So is this conversion correct? Also in the above formula, can I convert H to that natural units , since it’s a constant, while keeping k in Hz ?
View full post »

Similar threads

I Doppler effect in transparent media and the index of refraction
Replies
11
Views
1K
I Outer layer refractive index - total internal refection on waveguide
Replies
2
Views
2K
Air wedge interference pattern after being filled with water
Replies
5
Views
2K
I Condition for Centering Starlight in a Water-Filled Telescope?
Replies
6
Views
2K
Light speed and refractive index
Replies
25
Views
3K
The refractive index of an unknown liquid
Replies
1
Views
3K
How to Determine the Refractive Index of Glass Using Polarized Light?
Replies
3
Views
2K
Refractive index snell's law help
Replies
2
Views
4K
Problem involving interference and medium with index n
Replies
1
Views
1K
Calculating Index of Refraction with Wavelength
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top