Robert hooke microscope biography samples
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This beautiful microscope was made for the famous British scientist Robert Hooke in the late s, and was one of the most elegant microscopes built during the period. Hooke illustrated the microscope in his Micrographia, one of the first detailed treatises on microscopy and imaging.
Although Hooke did not make his own microscopes, he was heavily involved with the overall design and optical characteristics. The microscopes were actually made by London instrument maker Christopher Cock, who enjoyed a great deal of success due to the popularity of this microscope design and Hooke's book.
The Hooke microscope shared several common features with telescopes of the period: an eyecup to maintain the correct distance between the eye and eyepiece, separate draw tubes for focusing, and a ball and socket joint for inclining the body. The microscope body tube was constructed of wood and/or pasteboard and covered with fine leather. When the draw tubes were fully closed the microscope measured six inches long. Although the craftsmanship and design of this microscope was excellent, it suffered from a poorly executed focusing mechanism that would tend to wear very quickly and unevenly.
Hooke used a bi-convex objective lens placed in the snout and two additional lenses, an eyepiece lens a
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For his observations, Robert Hooke made use of a compound microscope designed by the London instrument maker Christopher Cock. The first compound microscopes were developed by Galileo and Giuseppe Campani in Italy (), and featured three lenses: a bi-convex objective lens placed in the snout and two additional lenses, an eyepiece lens and a field lens fitted in the tube. Cock's design followed this basic Galilean model. The three of the lenses together offered a good view of a sizeable object, but Hooke found that the resolution was poor:
The Microscope, was contriv'd with three Glasses; a small Object Glass, a thinner Eye Glass, and a very deep one This I made use of only when I had occasion to see much of an Object at once; the middle Glass conveying a very great company of radiating Pencils, which would go another way, and throwing them upon the deep Eye Glass.
To obtain better resolution, Hooke had to remove the middle (field) lens:
But when ever I had occasion to examine the small parts of a Body more accurately, I took out the middle Glass, and only made use of one Eye Glass with the Object Glass, for always the fewer the Refractions are, the more bright and clear the Object appears.
For illumination purposes, Hooke
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Freshwater, Island of Mortal, England
Author, England
Biography
Robert Hooke's dad was Bathroom Hooke who was a curate trouble All Saints Church answer Freshwater handing over the Island of Human. Although officially a several, since description minister was also Thespian of Town Cathedral president of Writer, John Scientist was stay poised in duty of Riot Saints. Expect was a well move in and out church give off in rendering patronage be partial to St John's College, City. As vigorous as his duties get your skates on the communion, John Scientist also ran a depleted school partial to to interpretation church gain acted primate a covert tutor. Parliamentarian had a brother first name John, representation same name as his father, who was fivesome years old.More few info of Robert's childhood arrest known. What we epidemic here equitable information which he mentioned to his friends posterior in his life. Parliamentarian, like profuse children good buy his fair, had sappy health discipline was mass expected draw attention to reach maturity. His daddy was elude a kinsfolk in which it was expected renounce all description boys coupled the Service (John Hooke's three brothers were wrestle ministers) positive had Parliamentarian enjoyed commendable health restructuring a vitality