Nicolaas Hartsoeker (26 March 1656, Gouda - 10 December 1725, Utrecht) was a Dutch mathematician and physicist who invented the screw-barrel simple microscope[1] circa 1694. Events 1026 - Pope John XIX crowns Conrad II as Holy Roman Emperor. Gouda (population 71797 in 2004 is a city and municipality in the western Netherlands, in the province of South Holland. Events 1041 - Empress Zoe of Byzantium elevates her adoptive son to the throne of the Eastern Roman Empire as Michael V Year 1725 ( MDCCXXV) was a Common year starting on Monday (link will display the full calendar of the Gregorian calendar (or a The Netherlands ( Dutch:, ˈnedərlɑnt is the European part of the Kingdom of the Netherlands, which consists of the Netherlands the Netherlands A mathematician is a person whose primary area of study and research is the field of Mathematics. A physicist is a Scientist who studies or practices Physics. Physicists study a wide range of physical phenomena in many branches of physics spanning A microscope ( Greek: ( micron) = small + ( skopein) = to look or see is an instrument for viewing objects that are Circa (often abbreviated c, ca, ca or cca and sometimes Italicized to show it is Latin) means "about"
Nicolaas was the son of Christiaan Hartsoeker (1626-1683), a Remonstrant minister in Moordrecht near Gouda. Remonstrants, the name given to those Dutch Protestants who after the death of Arminius, maintained the views associated with his name and in 1610 presented to the In Christian churches, a minister is someone who is authorized by a church or religious organization to perform clergy functions such as teaching of beliefs Moordrecht (population 8112 in January 2007 is a town and municipality in the province of South Holland, the Netherlands, situated along the river Gouda (population 71797 in 2004 is a city and municipality in the western Netherlands, in the province of South Holland. His father would take the family to Alkmaar in 1661 and finally to Rotterdam in 1669. For the place with the same name in Commewijne District of Suriname, see Alkmaar (Suriname. Rotterdam (pronounced) is the 2nd-largest City by population in the Netherlands, located in the province of Nicolaas started to make a living as a lensmaker in Rotterdam, and was instructed in optics by Antoni van Leeuwenhoek. Antonie Philips van Leeuwenhoek (October 24 1632 &ndash August 30 1723 was a Dutch tradesman and Scientist from Delft, the Netherlands In 1674, he and a fellow student, assisted by Van Leeuwenhoek, were the first to observe semen, a situation that would later lead to a priority dispute between Hartsoeker and Leeuwenhoek over the discovery of spermatozoids. A spermatozoon or spermatozoan ( pl spermatozoa) from the Ancient Greek σπέρμα (seed and ζῷον (living being and more commonly known
In 1677, Hartsoeker met Huygens, who he initiated in the making of lenses. Christiaan Huygens (ˈhaɪgənz in English ˈhœyɣəns in Dutch) ( April 14, 1629 &ndash July 8, 1695) was a Dutch In June 1678, Hartsoeker accompanied Huygens to Paris in the role as an assistant, where they made a great impression with their microscopes. Events in June Madaraka Day June 1 to commemorate when Kenya gained internal self-rule Paris (ˈpærɨs in English; in French) is the Capital of France and the country's largest city A microscope ( Greek: ( micron) = small + ( skopein) = to look or see is an instrument for viewing objects that are Huygens failed to mention Hartsoeker even once in his publication in France however, leading to a fall-out between the two[2]. To publish is to make content Publicly known. The term is most frequently applied to the distribution of text or images on paper or to the placing of content This article is about the country For a topic outline on this subject see List of basic France topics.
Hartsoeker returned to Rotterdam, where he married. His business as an instrument maker and wine merchant failed and in 1684 he moved his family to Paris, where he made instruments for the observatory and the academy, there to remain until 1698 [2]. Wine is an Alcoholic beverage made from the fermentation of Grape juice Paris (ˈpærɨs in English; in French) is the Capital of France and the country's largest city
It is often said that in 1694, while observing human sperm through a microscope, Hartsoeker believed that he saw tiny men inside the sperm, which he called homunculi or animalcules. The concept of a homunculus ( Latin for "little man" plural "homunculi" the diminutive of homo, "man" is often used to illustrate Animalcule ("little animal" from Latin animal + the diminutive suffix -culum) is an older term for a microscopic Animal or protozoan However, he only postulated their existence as part of his Spermist theory of conception and never claimed to have seen them[3]. In traditional Logic, an axiom or postulate is a proposition that is not proved or demonstrated but considered to be either self-evident, or subject Preformationism is the theory that all Organisms were created at the same time and that succeeding generations grow from homunculi, Animalcules or other The 1694 "Essay on dioptrics", in which this hypothesis appears, was a highly-lauded book, in fact tackling several misconceptions of the time. For example, Hartsoeker disavows the contemporary posiion (e. g. of Robert Hooke) that with refractor telescopes one soon would be able to see man-sized creatures on the moon, if any in fact existed[2]. Robert Hooke, FRS (18 July 1635 – 3 March 1703 was an English Natural philosopher and Polymath who played an important role in the A refracting or refractor telescope is a dioptric Telescope that uses a lens as its objective to form an image
At the end of the century, Hartsoeker had become quite famous. In 1699 he was elected member of the French and in 1704 of the Prussian Academy of Sciences, in both cases as one of the first foreign members. The French Academy of Sciences ( French: Académie des sciences) is a Learned society, founded in 1666 by Louis XIV at the The Prussian Academy of Sciences (Preußische Akademie der Wissenschaften was an Academy established in Berlin on July 11 1700. Czar Peter met him in Amsterdam and offered him the chair of mathematics in St Petersburg. Amsterdam (pronounced) is the capital and largest city of the Netherlands, located in the province of North Holland in the west Saint Petersburg ( tr: Sankt-Peterburg,) is a city and a federal subject of Russia located on the Neva River Hartsoeker did no accept, but the czar did finance an observatory for him in Amsterdam. An observatory is a location used for observing terrestrial and/or celestial events Amsterdam (pronounced) is the capital and largest city of the Netherlands, located in the province of North Holland in the west Later, in 1704, Hartsoeker accepted the offer of Johann Wilhelm, Elector Palatine to become "first mathematician and honorary professor of philosophy" at the University of Heidelberg. Year 1704 ( MDCCIV) was a Leap year starting on Tuesday (link will display the full calendar of the Gregorian calendar (or a Johann Wilhelm II Elector Palatine, also known as Johann Wilhelm von Pfalz-Neuburg, ( April 19, 1658 &ndash June 8, 1716) was The Ruprecht Karl University of Heidelberg ( University of Heidelberg, Ruperto Carola, Heidelberg University, or simply Heidelberg) is a The last years of his life were spent in Utrecht[2].
Bibliography
- Essai de dioptrique, 1694.
- Principes de physique, 1696.
- Traité de physique, 1696.
References
- ^ http://www.microscopy.fsu.edu/primer/museum/hartsoeker1694.html
- ^ a b c d Fokko Jan Dijksterhuis, "Constructive thinking: a case for dioptrics" in The Mindful Hand, History of Science and Scholarship in the Netherlands, vol. 9, pp. 59-82.
- ^ K. A. Hill Hartsoeker's Homonculus: a corrective note J Hist Behav Sci. 1985 Apr;21(2):178-9.
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