# If light enters a new medium perpendicularly

#### michaelw

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

Related Introductory Physics Homework News on Phys.org

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

#### James R

Homework Helper
Gold Member
michaelw:

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

#### Galileo

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.

"If light enters a new medium perpendicularly "

### Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving