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Index of
refraction of liquids
versus amount of additive
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Introduction:
One indicator
of the optical density of a material is the index of
refraction value of the material. Index of refraction
values (represented by the symbol n) are numerical index
values which are expressed relative to the speed of
light in a vacuum. The index of refraction value of a
material is a number which indicates the number of times
that a light wave would be in that material rather than
in a vacuum. A vacuum is given an n value of 1.0000. |
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We can calculate the index of
refraction using the angle that light bends when traveling from
one material to another material. If the index of refraction of
a solution changes based on the amount of solutes we can use
such property to find out the density of the solute without even
touching it. For example, sugar factories will be able to know
the percent of sugar in a solution while it is passing through a
clear pipe. |
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Project
description:
In this project you try to use refraction to determine the
concentration of salt or sugar in water. You may use a
refractometer for your experiments or build a refractometer as
described in project details. |
Details
of this project
More details or support for this project is available for the
members of ScienceProject.com web site. Material needed
for experiment or a science kit about this title may be
available at MiniScience.com. |
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