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# Physics Help! watch

1. How do you explain that angle of incidence increases as the angle of refraction does??? What is the reason for this?
2. (Original post by Leah Alemayehu)
How do you explain that angle of incidence increases as the angle of refraction does??? What is the reason for this?
I would probably talk about how n=(sin angle 1)/(sin angle 2) so they remain in the same ratio since n is constant, but you might want some more physics rather than formulae?
3. (Original post by Science_Girl)
I would probably talk about how n=(sin angle 1)/(sin angle 2) so they remain in the same ratio since n is constant, but you might want some more physics rather than formulae?
Should I explain about the density of the mediums or....
4. (Original post by Science_Girl)
I would probably talk about how n=(sin angle 1)/(sin angle 2) so they remain in the same ratio since n is constant, but you might want some more physics rather than formulae?
What do you mean by 'more physics' - physics is using equations to model the universe, so it is perfectly fine to quote snells law and use the maths to explain why the angle of refraction must also increase if incidence angle increases (and vice versa)
5. (Original post by samb1234)
What do you mean by 'more physics' - physics is using equations to model the universe, so it is perfectly fine to quote snells law and use the maths to explain why the angle of refraction must also increase if incidence angle increases (and vice versa)
I meant more of the theory rather than just saying 'this happens because of this formula'

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6. (Original post by Science_Girl)
I meant more of the theory rather than just saying 'this happens because of this formula'

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Sometimes (and this being one of them) an equation can convey both more accurately and concisely why something happens, then any worded explanation you could come up with. It's similar to defining momentum, if you try and define it in words you'll find that it is very difficult to define accurately whereas with a simple equation p=mv you have accurately defined it.
7. I agree, I don't think there's much more you can say about it really. The refractive index (n) remains constant so one angle has to increase/decrease to match the changes in the other angle. n=(sin1)/(sin2)
8. Thank you for the help 😀
9. (Original post by samb1234)
Sometimes (and this being one of them) an equation can convey both more accurately and concisely why something happens, then any worded explanation you could come up with. It's similar to defining momentum, if you try and define it in words you'll find that it is very difficult to define accurately whereas with a simple equation p=mv you have accurately defined it.
Nerd raggggggggge!
10. Snells Law
11. (Original post by Leah Alemayehu)
How do you explain that angle of incidence increases as the angle of refraction does??? What is the reason for this?
The wavelength of light changes as it enters a medium with a different refractive index

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