The story of optics goes long back in the past. The oldest
instance of glass being used as a tool of magnification is over
4000 years old. Glasses were first used as magnifiers and then
used as optical aids for people with poor vision. For the
purpose of spectacles, several refinements had to be made. But
magnifiers have been around for a long time helping people by
making the finer details clearer. A combination of such lenses
gave us the microscope and the telescope. Thus magnifying
glasses are important in almost all walks of life. For more
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