Refraction index Flashcards
1
Q
How do you calculate critical angle?
A
IN AIR:
sinθc = 1/n
IN MEDIUM:
sinθc = n1 / n2
Where θc is critical angle and n is refraction index
2
Q
How do you minimize loss of light in a tube of fibre?
A
> Transparent fiber so light isn’t absorbed
> Cladding (shielding) with a low refraction index so light is easily refracted within the tube
3
Q
What is the calculation for Snell’s Law involving angles?
A
n = sin i / sin r
Where i is angle of incidence and r is angle of refraction
