Re: Ways of measuring refractive index of liquid
- From: "OG" <owen@xxxxxxxxxxxxxxxxxxx>
- Date: Tue, 19 Sep 2006 22:38:12 +0100
"Panther" <black@xxxxxxx> wrote in message
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"Sam Wormley" <swormley1@xxxxxxxxx> wrote in message
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Panther wrote:
hi
I need to find an accurate, inexpensive way of measuring the refrcctvie
index of a liquid in a high school lab.
my teacher suggests using a convex lens in water with a mirror and a
pin, how does this work? what is it called?
PLEASE HELP.
Sounds overly complex. How about a Laser pointer entering a flat fish
tank?
Measure incident angle and refracted angle with a ruler and protractor
confirming Snell's law
A little vapor to scatter the beam above water and, similarly, a slight
amount of milk in the water.
That sounds too simple, I ahve to make a 20 page report on it, so
something harder is needed. Thanks though.
Please don't top post.
Using the equipment suggested by your teacher . . .
Using a convex lens and a mirror in air you can measure the focal length of
the lens
You can repeat the measurement in water and then in the liquid.
Assume that the refractive index of air is 1
The refractive index of water is around 1.33 - this is temperature
dependent, which will add to the experimental rigour
Using results in Air and in Water, you should have enough to work with.
.
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