26 results match your criteria tycho brahe

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Machine learning and serving of discrete field theories.

Authors:
Hong Qin

Sci Rep 2020 Nov 9;10(1):19329. Epub 2020 Nov 9.

Plasma Physics Laboratory, Princeton University, Princeton, NJ, 08543, USA.

A method for machine learning and serving of discrete field theories in physics is developed. The learning algorithm trains a discrete field theory from a set of observational data on a spacetime lattice, and the serving algorithm uses the learned discrete field theory to predict new observations of the field for new boundary and initial conditions. The approach of learning discrete field theories overcomes the difficulties associated with learning continuous theories by artificial intelligence. Read More

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November 2020

On the censorship of Tycho Brahe's books in Iberia.

Authors:
Luís Tirapicos

Ann Sci 2020 Jan 11;77(1):96-107. Epub 2020 Mar 11.

Centro Interuniversitário de História das Ciências e da Tecnologia, Faculdade de Ciências da Universidade de Lisboa, Lisboa, Portugal.

It is known that throughout the seventeenth century the world system proposed by Tycho Brahe (1546-1601) assumed a preponderant position in the Iberian cosmological debate, according to many opinions the one showing the best agreement to empirical evidence. Moreover, the Tychonian model (or variants thereof) did not present the difficulties of apparent contradiction with scriptures, as the heliocentric system of Nicolaus Copernicus (1473-1543) did, since it kept the earth fixed at the centre of the world. However, Tycho, as a Lutheran author, was targeted by the Inquisition. Read More

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January 2020

De re metallica. Johannes Kepler and alchemy.

Talanta 2019 Nov 26;204:82-88. Epub 2019 May 26.

Department of Chemistry, Materials and Chemical Engineering ''Giulio Natta'', Politecnico di Milano, Via Mancinelli 7, Milano, 20131, Italy. Electronic address:

The application of analytical chemistry to the exploration of the World Cultural Heritage represents a major challenge in that most protocols and strategies are invasive and require micro-sampling. We report a novel methodology for harvesting material deposited on the surface of ancient documents while avoiding their damage or contamination. The technology here described relates to the capture of metals on these specimens. Read More

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November 2019

Facial approximation of Tycho Brahe's partial skull based on estimated data with TIVMI-AFA3D.

Forensic Sci Int 2018 Nov 9;292:131-137. Epub 2018 Aug 9.

Department of Culture and Society-Section for Medieval and Renaissance Archaeology, Aarhus University, Moesgaard Alle 20, DK 8270 Højbjerg, Denmark.

The virtual approach in physical and forensic anthropology is increasingly used to further analyze human remains, but also to propose new didactic means for visualization and dissemination of scientific results. Computerized facial approximation (FA) offers an alternative to manual methods, but usually requires a complete facial skeleton to allow for the estimation of the facial appearance of an individual. This paper presents the case of Tycho Brahe, Danish astronomer born during the XVIth century, whose remains were reanalyzed at the occasion of a short exhumation in 2010. Read More

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November 2018

Rich table but short life: Diffuse idiopathic skeletal hyperostosis in Danish astronomer Tycho Brahe (1546-1601) and its possible consequences.

PLoS One 2018 19;13(4):e0195920. Epub 2018 Apr 19.

PACEA-UMR 5199, University of Bordeaux, Pessac, France.

The exhumation of Danish astronomer Tycho Brahe (1546-1601) was performed in 2010 to verify speculative views on the cause of his death. Previous analyses of skeletal and hair remains recovered from his grave refuted the presumption that he died from poisoning. These studies also outlined the possibility that he actually died from an acute illness, echoing the rather vague and inaccurate testimony of some historical records. Read More

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What Would It Be Like to Lose One's Nose? Gogol's The Nose and the Astronomer Tycho Brahe.

Authors:
Kun Hwang

Arch Plast Surg 2017 Jul 15;44(4):257-258. Epub 2017 Jul 15.

Department of Plastic Surgery, Inha University School of Medicine, Incheon, Korea.

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Urologic Demise of Astronomer Tycho Brahe: A Cosmic Case of Urinary Retention.

Authors:
Lawrence M Wyner

Urology 2016 Feb 5;88:33-5. Epub 2015 Nov 5.

Department of Surgery (Urology), Joan C. Edwards School of Medicine, Marshall University, Huntington, WV. Electronic address:

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February 2016

Perfect in Every Sense. Scientific Iconography on an Equation Clock by Jost Bürgi and the Self-Understanding of the Astronomers at the Kassel Court in the Late 1580s.

Authors:
Karsten Gaulke

Nuncius 2015 ;30(1):37-74

At the center of this article is an iconographic analysis of the eight silver reliefs on the sides of a table clock made in 1591 by Jost Burgi, the court clockmaker of Landgrave Wilhelm iv of Hessen-Kassel. The reliefs present an astronomical ancestral picture gallery, running from the Patriarchs of the Old Testament to Copernicus. The author argues that the "storyboard" for this sequence of images must have been conceived down to its smallest details by the Kassel court astronomer Christoph Rothmann; indeed, many of the scenes shown, along with many particular details depicted within them, are literally described in Rothmann's never-published manuscript Observationes stellarum fixarum of 1589. Read More

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November 2015

"Perhaps Irrelevant". The Iconography of Tycho Brahe's Small Gilt Brass Quadrant.

Nuncius 2015 ;30(1):9-36

When Tycho Brahe published a description of his astronomical instruments in 1598 as part of a strategy to procure royal patronage, it was not with one of his grander, precision measurement tools that he opened his account, but rather a small brass quadrant with limited observational utility. The defining feature of this instrument was seemingly a small emblematic image inscribed within the arc of the quadrant. Through this symbolic motif Tycho conveyed a moralising message about the relative worth of astronomy. Read More

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November 2015

[In Process Citation].

Sudhoffs Arch 2014 ;98(2):234-8

We report on a newly discovered letter by Christoph Rothmann, dated July 1st 1584, and addressed to Johann Ernst of Anhalt. The letter supports the earlier assumption that Johann Ernst recommended Rothmann to Landgrave Wilhelm of Hesse, as Rothmann asks for Johann Ernst's help on the matter in this new source. More importantly Rothmann refers to his attempts to make Copernicus' calculations compatible with the Ptolomean model, which demonstrates that already at this stage of his career he was working on such a compromise, and not only after being influenced by Raimarus Ursus or Tycho Brahe, as has been argued by some authors. Read More

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Detection of mercury in the 411-year-old beard hairs of the astronomer Tycho Brahe by elemental analysis in electron microscopy.

Ultrastruct Pathol 2012 Oct;36(5):312-9

Electron Microscopic Center, Department of Pathology, University of Rostock, Rostock, Germany.

Hairs more than 400 years old of the famous astronomer Tycho Brahe were studied by electron microscopy to evaluate the hypothesis that Johannes Kepler murdered his teacher Brahe by mercury intoxication. The beard hairs showed a well-preserved ultrastructure with typical hair scales and melanosomes. The authors detected an accumulation of electron-dense granules of about 10 nm inside the outer hair scales, but not in the hair shaft and roots. Read More

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October 2012

Precision engineering for astronomy: historical origins and the future revolution in ground-based astronomy.

Philos Trans A Math Phys Eng Sci 2012 Aug;370(1973):3852-86

UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK.

Since the dawn of civilization, the human race has pushed technology to the limit to study the heavens in ever-increasing detail. As astronomical instruments have evolved from those built by Tycho Brahe in the sixteenth century, through Galileo and Newton in the seventeenth, to the present day, astronomers have made ever more precise measurements. To do this, they have pushed the art and science of precision engineering to extremes. Read More

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An absence of ex-companion stars in the type Ia supernova remnant SNR 0509-67.5.

Nature 2012 Jan 11;481(7380):164-6. Epub 2012 Jan 11.

Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA.

A type Ia supernova is thought to begin with the explosion of a white dwarf star. The explosion could be triggered by the merger of two white dwarfs (a 'double-degenerate' origin), or by mass transfer from a companion star (the 'single-degenerate' path). The identity of the progenitor is still controversial; for example, a recent argument against the single-degenerate origin has been widely rejected. Read More

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January 2012

[Tycho Brahe's moustache a posthumous witness to murder?].

Authors:
Lennart Berggren

Lakartidningen 2009 Nov 11-17;106(46):3095-8

Ogonkliniken, Akademiska sjukhuset, Uppsala.

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February 2010

[out of scope].

Sudhoffs Arch 2008 ;92(1):65-97

Sächsische Akademie der Wissenschaften zu Leipzig, Karl-Tauchnitz-Str. 1, D-04107 Leipzig.

This article sheds light onto life and work of the German land surveyor, cartographer, astronomer, and mechanic Johannes Humelius (1518-1562), paying special attention to the situation of the University of Leipzig in the middle of the 16th century. At this scientific institution, the scholar Humelius--born in the imperial town of Memmingen and highly regarded by the emperor Charles V and by Melanchthon--assumed the main chair of mathematics in 1551, succeeding Georg Joachim Rheticus as professor on this position. Humelius became an intimate friend of the Saxon elector August and laid the foundations of cartography, land surveying and engineering of measurement instruments in the electorate of Saxony. Read More

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October 2008

Tycho Brahe: emperor of Hven and the heavens.

Authors:
Patricia Fara

Endeavour 2007 Sep;31(3):86-7

Clare College, Cambridge, UK.

Although the Danish astronomer Tycho Brahe reacted against Copernicus by restoring the earth to the centre of the cosmos, he built sophisticated instruments to compile massive sets of accurate data. A skilled self-publicist, he commissioned portraits of himself as he established a new type of astronomical research. Read More

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September 2007

Atmospheric refraction: a history.

Appl Opt 2005 Sep;44(27):5624-36

Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg R3T-5V6, Canada.

We trace the history of atmospheric refraction from the ancient Greeks up to the time of Kepler. The concept that the atmosphere could refract light entered Western science in the second century B.C. Read More

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September 2005

[Famous cases for amputation].

Authors:
Volker Klimpel

Wurzbg Medizinhist Mitt 2004 ;23:313-27

After a short historical survey 14 cases of celebrated personalities one woman and 13 men, with the grave handicap of amputation are represented. The causes of the lost limbs, once of the nose, were battle injuries (guns) or accidents. In many cases the protheseology followed the amputation, dependent on the technological level of the day. Read More

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[John Flamsteed's horoscope for laying the groundwork of Greenwich astronomy and astrology].

Sudhoffs Arch 2002 ;86(2):129-37

The paper deals with the astronomical and astrological contents of a horoscope cast by John Flamsteed in 1675 for the foundation of Greenwich Observatory. So far no analysis of its astronomical contents has been made. It can be shown that the chart has been drawn correctly, as is to be expected from a competent astronomer. Read More

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Tycho Brahe: astronomer of Renaissance Denmark.

Authors:
H C Greisman

Clin Plast Surg 1983 Oct;10(4):629-33

As the result of a duel early in the life of this flamboyant scientist, Tycho Brahe lost his nose and soon after began to wear a prosthesis. Although evidence is impressionistic at best, Tycho's case can be seen as an example of how the use of a prosthesis produced significant biographic changes. Read More

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October 1983
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