REFRACTION - Snell's Law w/ Prism   Data:  Angle of Incidence 1 = 54 degrees Angle of Refraction1 = 326 degrees Angle of Incidence 2 = 24 degrees Angle of Refraction 2 = 58 degrees   Prism material is glass, with an index of refratction that is 1.52.  Use Snell's Law to solve for N sub 1.

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REFRACTION - Snell's Law w/ Prism

 

Data: 

Angle of Incidence 1 = 54 degrees

Angle of Refraction1 = 326 degrees

Angle of Incidence 2 = 24 degrees

Angle of Refraction 2 = 58 degrees

 

Prism material is glass, with an index of refratction that is 1.52. 

Use Snell's Law to solve for N sub 1. 

Lab #3
Refraction
Refraction is the bending of a wave when it enters a medium due to a change in speed.
This happens to sound waves and light waves as well - the refraction of light happens
when it slows down after encountering a new medium.
Place the prism, triangle-shaped face down, on graph paper and trace it. Shine the laser
onto the entrance point, and mark on the graph paper the origin point on the laser and
the entry point to the prism. Draw a line between these two points. This will give that
How much the light bends depends upon the substances involved. Each material that
first red line to the left, and record e. from a normal line to the prism's side.
light passes through will bend light differently; oil will bend light more than water, for
Use a backdrop at a further point to see where the light goes after exiting the prism.
instance. That also is the case with transparent solids as well: glass will diffract light at a
different angle than diamonds. In short, each material has an index of refraction, and
Using this point and where it actually exits the prism, draw the red line to the right, and
with a normal line on that side of the prism, record 8a.
this is used with Snell's Law to discover the makeup of a material.
Create the middle line by connecting the entrance and exit points. The final result
N-sin(e,) = N-sin(e,)
should be a diagram like the one on the previous page, with angles that can be
measured with the protractor. Given that the N; for air is 1.0, use the Snell's Law
equation to solve for N.
As seen in the Snell's Law equation
above, there are 4 variables, and it
shows the relationship between the
indices (N) and the angle that is bent
-Ng
by that material (0). The angle is
measured from the normal of the
surface.
In the kit there is a prism, laser, and
E
graph paper. Using these, try to
discover the material used to make the
R
prism. Note first graphic to the right
that light from point E enters in, is bent
upon its entry, and is bent again to exit
at point H. This is a little confusing, so a
simpler version is given in the diagram
below.
The red line is the path of the laser
coming in from the left. The angle of
120
incidence to the prism is Ba. The prism
material bends the light, and that angle
from the normal line is 8,1. Using these
two angles and Snell's Law, solve for N;, the index of refraction for the prism. Do the
same for Ba and Ba as the laser exits the prism, to verify the material's index.
Transcribed Image Text:Lab #3 Refraction Refraction is the bending of a wave when it enters a medium due to a change in speed. This happens to sound waves and light waves as well - the refraction of light happens when it slows down after encountering a new medium. Place the prism, triangle-shaped face down, on graph paper and trace it. Shine the laser onto the entrance point, and mark on the graph paper the origin point on the laser and the entry point to the prism. Draw a line between these two points. This will give that How much the light bends depends upon the substances involved. Each material that first red line to the left, and record e. from a normal line to the prism's side. light passes through will bend light differently; oil will bend light more than water, for Use a backdrop at a further point to see where the light goes after exiting the prism. instance. That also is the case with transparent solids as well: glass will diffract light at a different angle than diamonds. In short, each material has an index of refraction, and Using this point and where it actually exits the prism, draw the red line to the right, and with a normal line on that side of the prism, record 8a. this is used with Snell's Law to discover the makeup of a material. Create the middle line by connecting the entrance and exit points. The final result N-sin(e,) = N-sin(e,) should be a diagram like the one on the previous page, with angles that can be measured with the protractor. Given that the N; for air is 1.0, use the Snell's Law equation to solve for N. As seen in the Snell's Law equation above, there are 4 variables, and it shows the relationship between the indices (N) and the angle that is bent -Ng by that material (0). The angle is measured from the normal of the surface. In the kit there is a prism, laser, and E graph paper. Using these, try to discover the material used to make the R prism. Note first graphic to the right that light from point E enters in, is bent upon its entry, and is bent again to exit at point H. This is a little confusing, so a simpler version is given in the diagram below. The red line is the path of the laser coming in from the left. The angle of 120 incidence to the prism is Ba. The prism material bends the light, and that angle from the normal line is 8,1. Using these two angles and Snell's Law, solve for N;, the index of refraction for the prism. Do the same for Ba and Ba as the laser exits the prism, to verify the material's index.
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