2.6 Refraction of Light Flashcards

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1
Q

What is the equation for refractive index?

A

n = c / v

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2
Q

What does c stand for in the refractive index equation?

A

The speed of light in a vacuum

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3
Q

What does v stand for in the refractive index equation?

A

The speed of light in the medium

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4
Q

What are the equations for Snell’s law?

A

n1v1 = n2v2
n1sinθ1 = n2sinθ2

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5
Q

Snell’s Law

A

At the boundary between any two given materials the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant

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6
Q

What are the conditions for total internal reflection?

A

The angle of incidence is greater than the critical angle

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7
Q

At the critical angle what is the equation we can use?

A

n1sinθc = n2

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8
Q

Monomode Fibres

A

Is where the core diameter is so small that there is only one possible path through the fibre which is along it’s axis. Parallel to its axis

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9
Q

Multimode Fibres

A

Allow for the passing of multiple waves down a fibre at the same time due to the different waves traveling through the fibre at different angles

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