Some biological systems can act like an optical fiber. Below
is a drawing which illustrates how this might occur.
Imagine you have a long, thin cell surrounded by fluid with
index of refraction 1.38. The average index of refraction
inside the cell is 1.48.
a) Compute the critical angle, θcrit, for total internal
reflection for this system. Show all of your computations.
b) What will the angle of refraction be for ray A that has an angle of incidence of 13 degrees? Show
all of your calculations. Indicate the new ray’s direction and
its angle of refraction on your drawing.

Question

Some biological systems can act like an optical fiber. Below
is a drawing which illustrates how this might occur.
Imagine you have a long, thin cell surrounded by fluid with
index of refraction 1.38. The average index of refraction
inside the cell is 1.48.
a) Compute the critical angle, θcrit, for total internal
reflection for this system. Show all of your computations.
b) What will the angle of refraction be for ray A that has an angle of incidence of 13 degrees? Show
all of your calculations. Indicate the new ray’s direction and
its angle of refraction on your drawing.

anonymous · Answer

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