# If light enters a new medium perpendicularly

michaelw
How will it bend? Or will it not bend at all?

## Answers and Replies

Brad Barker
michaelw said:
How will it bend? Or will it not bend at all?

what would snell's law imply?

michaelw
i dont know :/
lets say it goes from glass to air
1.5 = sin(theta)

but what does that say about theta?

Lyuokdea
Hint, the correct equation for Snell's Law is:

$$n_{1} sin(\theta_1) = n_{2} sin(\theta_2)$$

Where $\theta_1$ and $\theta_2$ are the angle from the normal.

~Lyuokdea

Science Advisor
Homework Helper
Gold Member
michaelw:

Looks like you should have a sin(zero) factor in there.

Science Advisor
Homework Helper
From a physical point of view. If the medium is isotropic, why would the light bend in any particular preferred direction? Suppose it bend to the right from on standpoint. If you stand on the other side of the medium it would turn left while the physical situation is identical.