Stanhope lens
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A Stanhope lens is a simple, one-piece microscope invented by Charles, the third Earl of Stanhope. It is a cylinder of glass which has one curved end to refract light while the other flat end is in the focal plane of the other. Because its construction is simple and economical, it was popular in the 19th century.[1] It was useful in medical practise for examining transparent materials such as crystals and fluids.[2]
[edit] References
- ^ John Henry Pepper (1864). Scientific Amusements for Young People, 573.
- ^ Dr. Laycock (1846). "Clinical observation - its value and nature". London Medical Gazette 38: 142.
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