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
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 »
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
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