October 15th, 2011

Barbara Ellmerer

Descartes: Again, a magnet in a small boat (magnes exiguae cymbae impositus)

October 15th, 2011

René Descartes  (1596-1650), Principia Philosophia (Amsterdam: Ludovicus Elzevirius, 1650), Zentralbibliothek Zürich, Alte Drucke und Rara, FF 91, p. 272-73

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October 14th, 2011

Judith Albert

Descartes: RVS: Field of force (sphaera virtutis)

October 13th, 2011

René Descartes  (1596-1650), Principia Philosophia (Amsterdam: Ludovicus Elzevirius, 1650), Zentralbibliothek Zürich, Alte Drucke und Rara, FF 91, p. 283 Read the rest of this entry »

October 13th, 2011

Barbara Ellmerer

October 12th, 2011

Descartes: Striated particles (particulae striatae) pass veins inside the earth in two senses.

October 11th, 2011

René Descartes  (1596-1650), Principia Philosophia (Amsterdam: Ludovicus Elzevirius, 1650), Zentralbibliothek Zürich, Alte Drucke und Rara, FF 91, p. 266

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October 11th, 2011

Barbara Ellmerer

October 10th, 2011

Descartes: Several vortices (vortex C in the centre)

October 10th, 2011

René Descartes  (1596-1650), Principia Philosophia (Amsterdam: Ludovicus Elzevirius, 1650), Zentralbibliothek Zürich, Alte Drucke und Rara, FF 91, p. 148

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