Society of Robots - Robot Forum
General Misc => Misc => Topic started by: hellogreen1314 on December 06, 2008, 01:19:30 AM
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How to Measure magnification
How can I see how strong a magnifying glass is?
I bought this magnifying glass http://www.liangdianup.com/inventory/189901.htm and I want
to know how to test it to see how strong it is. I hear a lot of people talk about
magnifying and how strong the magnification is, but I would like to know the true
magnification of my magnifying glass. I have a few of them and some seem stronger then
others. How can I rate these? How can I pin a correct number on mine? How do the companies
that make these come up with these numbers.
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A crude way to do it is see how much 'bigger the object gets' when using the magnifying glass. Put a ruler up to the magnified image, and the regular object, and see they change.
The typical handheld magnifying glass will give ~3x magnification.