Johannes Phocylides Holwarda
Johannes Phocylides Holwarda (Jan Fokkesz, Jan Fokker, Johann Holwarda, Johannes Fokkes Holwarda, Jan Fokkens Holwarda, Jan Fokkes van haylen) (February 19, 1618—January 22, 1651) was a Frisian astronomer, physician, and philosopher. He was a professor of philosophy at the University of Franeker from 1639 to 1651. Born in Holwerd, he is best remembered for his discovery of the length of Mira's (Omicron Ceti's) varying appearance cycle. In a systematic study in 1638, he found that Mira disappeared and reappeared in a varying cycle of about 330 days.
16181651DongeradeelIndex of modern philosophy articlesIndex of philosophy articles (I–Q)Johann HolwardaJohannes Fokkes HolwardaJohn Webster (minister)List of craters on the Moon: O–QList of people from the Dutch Golden AgeList of people with craters of the Moon named after themList of variable starsMiraNoardeast-FryslânPhocylidesPhocylides HolwardaPhocyllides HolwardaVariable star
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Johannes Phocylides Holwarda
Johannes Phocylides Holwarda (Jan Fokkesz, Jan Fokker, Johann Holwarda, Johannes Fokkes Holwarda, Jan Fokkens Holwarda, Jan Fokkes van haylen) (February 19, 1618—January 22, 1651) was a Frisian astronomer, physician, and philosopher. He was a professor of philosophy at the University of Franeker from 1639 to 1651. Born in Holwerd, he is best remembered for his discovery of the length of Mira's (Omicron Ceti's) varying appearance cycle. In a systematic study in 1638, he found that Mira disappeared and reappeared in a varying cycle of about 330 days.
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Johannes Phocylides Holwarda ( ...... r Phocylides nach ihm benannt.
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Johannes Phocylides Holwarda ( ...... o il moto direttamente da Dio.
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Johannes Phocylides Holwarda ( ...... e Friesche Sterrekonst (1652).
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Johannes Phocylides Holwarda ( ...... r Phocylides porta el seu nom.
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Johannes Phocylides Holwarda ( ...... hysicien et philosophe frison.
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Johannes Phocylides Holwarda ( ...... Phocylides is named after him.
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Johannes Phocylides Holwarda ( ...... d de Franeker de 1639 a 1651.
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Johannes Phocylides Holwarda t ...... kraterów na Księżycu nazwano .
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Johannes Phocylides Holwarda, ...... har uppkallats efter Holwarda.
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Ο Ιωάννης Φωκυλίδης Χολβάρντα ...... βε το όνομά του προς τιμή του.
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Johannes Phocylides Holwarda ( ...... rg und fand zahlreiche Fehler.
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Johannes Phocylides Holwarda ( ...... di Franeker dal 1639 al 1651.
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Johannes Phocylides Holwarda ( ...... e Friesche Sterrekonst (1652).
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Johannes Phocylides Holwarda ( ...... r Phocylides porta el seu nom.
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Johannes Phocylides Holwarda ( ...... hysicien et philosophe frison.
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Johannes Phocylides Holwarda ( ...... rying cycle of about 330 days.
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Johannes Phocylides Holwarda ( ...... d de Franeker de 1639 a 1651.
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Johannes Phocylides Holwarda t ...... ian blasku równym ok. 330 dni.
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Johannes Phocylides Holwarda, ...... tidscykel på ungefär 330 dygn.
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Ο Ιωάννης Φωκυλίδης Χολβάρντα ...... βε το όνομά του προς τιμή του.
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Johann Holwarda
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Johann Holwarda
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Johannes Phocylides Holwarda
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Johannes Phocylides Holwarda
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Johannes Phocylides Holwarda
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Johannes Phocylides Holwarda
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Johannes Phocylides Holwarda
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Johannes Phocylides Holwarda
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Johannes Phocylides Holwarda
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Ιωάννης Φωκυλίδης Χολβάρντα
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