WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
Nature The World Movies USA Top Art Fine & Rare History Ivy & Inquiry
Astronomicum Caesareum
Videos
Astronomicum Caesareum is a book by Petrus Apianus first published in 1540.
Cover page of the 1540 edition
Cover page of the 1540 edition
Volvelle
Videos
A volvelle or wheel chart is a type of slide chart, a paper construction with rotating parts. It is considered an early example of a paper analog computer. Volvelles have been produced to accommodate
A 15th century volvella of the moon
A 15th century volvella of the moon
A sixteenth-century wheel chart, a page of Astronomicum Caesareum by Petrus Apianus, 1540, apparently relating to the Moon. The red dragons mark out o
A sixteenth-century wheel chart, a page of Astronomicum Caesareum by Petrus Apianus, 1540, apparently relating to the Moon. The red dragons mark out one odd-sized and 26 equal-sized central divisions; the orbital period of the moon is 27.3 days.
A volvelle from the sixteenth century edition of the De sphaera mundi by Johannes de Sacrobosco.
A volvelle from the sixteenth century edition of the De sphaera mundi by Johannes de Sacrobosco.