Premier microscope van leeuwenhoek biography
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‘I think this is the beginning of a beautiful friendship’. You’ll likely recognise this famous line, uttered by Rick Blaine (Humphrey Bogart) at the end of the classic movie Casablanca. It always pops into my mind when I read the following:
‘Mr. Leewenhoeck hath lately contrived Microscopes excelling those that have been hitherto made by Eustachio Divini and others […] he hath given a Specimen of their excellency by divers Observations, and is ready to receive difficult tasks for more, if the Curious here shall please to send him such: Which they are not like to be wanting in.’
The source is an article in number 94 of the Philosophical Transactions, published on 19 May 1673 by Henry Oldenburg, Secretary of the Royal Society. Oldenburg had received some correspondence from Delft in Holland, reaching London despite the background rumblings of the Third Anglo-Dutch War: a covering letter bygd Dutch physician Regnier de Graaf, quoted above in
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Microscope de Van Leeuwenhoek
Le microscope dem Van Leeuwenhoek est un microscope imaginé et créé par Antoni Van Leeuwenhoek au XVIIe siècle.
Il a notamment permis la découverte des microorganismes, des protozoaires et des spermatozoïdes.
Ce microscope d'un genre tout à fait unique, qui est en réalité une loupe très puissante, se compose d'une minuscule lentille serrée ingång deux plaques métalliques, placée devant une tige réglable et une aiguille portant le spécimen à étudier[2]. L'œil prend place derrière la plaque, vers une source de lumière. Van Leeuwenhoek a atteint de cette manière des grossissements de 275 fois, alors que les meilleurs microscopes dem l'époque n'atteignaient que 30 fois.
Historique
[modifier | modifier le code]De par sa profession de marchand de drap à Delft, Leeuwenhoek connaissait le compte-fils, loupe utilisée pour inspecter les étoffes, dans l'industrie textile.
Les premières observations de Leeuwenhoek sont présentées à la Roya
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Imagine trying to cope with a pandemic like COVID-19 in a world where microscopic life was unknown. Prior to the 17th century, people were limited by what they could see with their own two eyes. But then a Dutch cloth merchant changed everything.
His name was Antonie van Leeuwenhoek, and he lived from 1632 to 1723. Although untrained in science, van Leeuwenhoek became the greatest lens-maker of his day, discovered microscopic life forms and is known today as the “father of microbiology.”
Visualizing ‘animalcules’ with a ‘small see-er’
Van Leeuwenhoek didn’t set out to identify microbes. Instead, he was trying to assess the quality of thread. He developed a method for making lenses by heating thin filaments of glass to make tiny spheres. His lenses were of such high quality he saw things no one else could.
This enabled him to train his microscope – literally, “small see-er” – on a new and largely unexpected realm: objects, including organisms, far too small to be seen by the