Re: Ways of measuring refractive index of liquid
- From: Timo Nieminen <timo@xxxxxxxxxxxxxxxxx>
- Date: Wed, 20 Sep 2006 09:16:49 +1000
On Tue, 19 Sep 2006, Panther wrote:
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?
Sounds like you're meant to stick the lens in front of the mirror, and see
where the pin needs to be so that the pin and its image/reflection
coincide.
As for what should go in your 20 page report, you'd better ask your
teacher. Some ray diagrams and/or algebra showing how it works would be
good. Instead of just measuring the refractive index of the liquid, try
finding out _how accurate_ the measurement is. Consider error from
assuming thin lens addition of power, experimental error, etc.
--
Timo Nieminen - Home page: http://www.physics.uq.edu.au/people/nieminen/
E-prints: http://eprint.uq.edu.au/view/person/Nieminen,_Timo_A..html
Shrine to Spirits: http://www.users.bigpond.com/timo_nieminen/spirits.html
.
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