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A 3 page research paper that offers a brief history of the microscope, focusing primarily on Van Leeuwenhoek and Hooke's contributions in the seventeenth century. Bibliography lists 4 sources.
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3 pages (~225 words per page)
File: KL9_khmicro.doc
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first century, the Romans noted objects when viewed through glass would appear larger. The next major development occurred in the thirteenth century when Salvino DArmate, an Italian, constructed the first
eye glass, an early form of spectacles, which provided the user with magnification to one eye ("Who," 2010). Jansen and his father experimented with lenses during the 1590s and
placed several lenses within in a tube, which led to the discovery that an object when viewed through the tube would appear greatly enlarged ("Who," 2010). The first microscopes, which
were constructed by the Jensens, were perceived as novelties, rather than scientific instruments, as the magnification was only around 9x and the images were rather blurred. It was upon
these discoveries that Anton van Leeuwenhoek (1632-1723), a Dutch scientist, drew in order to construct and utilize the first "real" microscope (Bellis, 2012). Van Leeuwenhoek devised new methods
for grinding and polishing lenses, which led to his microscope having a magnifying power of 270x ("Who," 2010). He developed his methods for grinding lenses some time prior to 1668
and inspired to develop his microscope after looking at the illustrations in Robert Hookes illustrated text Micrographia ("Anton," 2010). Micrographia was published in 1665 and this text describes Hookes
study of thin slices of cork and the "boxlike" structures that he observed through his microscope, which he termed "cells" ("Microscope," 2010). As this suggests, Hooke is credited with coining
the word "cell," as this structure he observed reminded him of the cells found in a monastery, and he also reported observing similar structures in wood, as well as in
other plants ("Microscope," 2010). Hooke recorded his observations, using his primitive compound microscope, of a variety of objects, such as a needle, snow, and a razor, but his most significant
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