Refraction is a bend event of direction light transmission from one medium to the others which have different density. In our daily life we often see the light refraction, such as a pencil dipping into a glass containing water, the pencil will look like bent.
Law of Light Refraction
According to Willebord Snellius, the light which comes from one medium to the other mediums will get the light refraction:
- the incident ray, normal line, and the refraction ray located at one area and cross at one point.
- The incident ray from the less dense medium to the more dense medium will be refracted close to the normal line, and the incident ray from the more dense medium to the less dense medium will be refracted far from the normal line.
Medium Refraction Index
Refraction Index is the comparison value between ray incident projection and ray refraction projection in refracting path. Medium refraction index is various, depend on to the kind of the medium its self.Refraction index can be calculated as
(n)= C/V
C is ray incident projection and V is ray refraction.
Deviation Angle
The refraction by prism will make deviation angle
δ = deviation angle
i = incident angle from air
β = refraction angle prism
r = refraction angle in air
Label:
Light
