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The field of mechanical computation lay dormant for quite some time but was revived in the 1600s with the development of several calculation machines, starting with Wilhelm Schickard in 1623, Blaise Pascal in 1642, and Gottfried Wilhelm Leibniz in 1680.
Desk-top calculators owe their intellectual origins to the seventeenth-century machinery of Wilheim Schickard, Blaise Pascal, Gottfried Leibniz, and others.
Emley himself had conducted such forms of lunar observation, including albedo measurements of spots in Schickard and attempts to identify far-side ray craters on the basis of rays on the Moon's limb.
22); y en astroscopio, donde alude al inventor de dicho instrumento, el tambien aleman Wilhelm Schickard, relacionado con aquel gran astronomo.
The first calculating machine was built by the German astronomer Wilhelm Schickard (1592-1635) in 1623 [41, p.
In 1623 Willhelm Schickard, of the federal state of Baaden Werttemberg, invented a mechanical calculating device.
He writes a poem upon the death of Wilhelm Schickard, a model for combining philology and astronomical interests; he tells Galileo to be philosophical about his blindness in one eye; he considers lexical and metrological tools; he discusses vegetarianism with van Helmont--while stressing the purposeful nature of living things.
623-24 Wilhelm Schickard invented the first mechanical calculator; the records were lost, however, during the Thirty Years' War.
Individuals like Pierre Gassendi, Joseph Gaultier de la Valette, and the German oriental scholar Guillaume Schickard were competent astronomers; others like the Tunis resident Thomas Arcos, a former secretary to Cardinal Joyeuse, could organize observations from distant sites or procure information, documents, and curiosities.
In the 1930s there was still a lot of original lunar work that could be done: one member of the Circle would circulate a chart of a lunar crater, such as Newton or Schickard, or some feature near the less well-mapped limb areas, (23) and the others would copy the chart and add to it at succeeding lunations.
Desk-top calculators owe their intellectual origins to the seventeenth-century machinery of Wilhelm Schickard, Blaise Pascal, Gottfried Leibniz, and others.
I explained on the telephone that I was both a professional and amateur astronomer (an interesting mixture) and that I would like to use the Clark refractor to make drawings of craters Plato and Schickard, and also of the planet Jupiter.