Philosophy
These are curious mechanical devices.
Wikipedia...
Volvelles, also called wheel charts, are a type of slide chart, paper constructions with rotating parts. It is considered an early example of a paper analog computer. Volvelles have been produced to accommodate organization and calculation in many diverse subjects. Early examples of volvelles are found in the pages of astronomy books. They can be traced back to "certain Arabic treateses on humoral medicine" and to the Persian astronomer, Abu Rayhan Biruni (c. 1000), who made important contributions to the development of the volvelle.
I was at a rare book website and discovered the following...an early 17th Century book with a volvelles intact.
Sacrobosco discusses the Earth and its place in the Universe.
Volvelles [wheel charts] are still used today for various functions in science, HVAC, mathematical conversions, and photography. And many are made from plastic and metal but still employ the same idea.
- Oratio Grassi's “tractatus De Sphaera” Now At Oklahoma University
"OU acquires rare Roman astronomy manuscript" April 5th, 2013 The Norman Transcript A rare manuscript written by a leading astronomer in Rome at the height of Galileo’s astronomical discoveries recently was acquired by the University of Oklahoma’s...
- J. E. E. Bessler [orffyreus]...an 18th Century Con Man?
Diagram of the wheel built by Orffyreus in Merseburg, taken from and based on an engraving published by Orffyreus in 1715. On the left is a side view and on the right a frontal view, both of the same device. The driving mechanism is supposedly hidden...
- New Book By David A. Weintraub..."how Old Is The Universe?"
How Old Is the Universe? by David A. Weintraub [David A. Weintraub is professor of astronomy at Vanderbilt University. He is the author of Is Pluto a Planet?: A Historical Journey through the Solar System.] ISBN-10: 0691147310 ISBN-13: 978-0691147314...
- William De Wiveleslie Abney...technical Photographer
William de Wiveleslie Abney July 24th, 1843 to December 3rd, 1920 Wikipedia... Abney was born in Derby, England, the son of Edward Abney (1811-1892) vicar of St Alkmund's Derby. He attended Rossall School, the Royal Military Academy, Woolwich and...
- A Birthday Celebration Today-- Freeman Dyson...#85
While he was in his 20s, Dyson made a huge contribution to science: He [with Feynman, Schwinger and Tomonaga] solved the central problem of quantum electrodynamics...a theory that describes how light and matter interact--without the credentials of a...
Philosophy
Volvelles...moveable paper charts
These are curious mechanical devices.
Wikipedia...
Volvelles, also called wheel charts, are a type of slide chart, paper constructions with rotating parts. It is considered an early example of a paper analog computer. Volvelles have been produced to accommodate organization and calculation in many diverse subjects. Early examples of volvelles are found in the pages of astronomy books. They can be traced back to "certain Arabic treateses on humoral medicine" and to the Persian astronomer, Abu Rayhan Biruni (c. 1000), who made important contributions to the development of the volvelle.
I was at a rare book website and discovered the following...an early 17th Century book with a volvelles intact.
Tractatus de Sphaera
by
Sacrobosco
1619
[A reprint of a 1230 edition]
by
Sacrobosco
1619
[A reprint of a 1230 edition]
Sacrobosco discusses the Earth and its place in the Universe.
Volvelles [wheel charts] are still used today for various functions in science, HVAC, mathematical conversions, and photography. And many are made from plastic and metal but still employ the same idea.
Reinventing the Wheel
by
Jessica Helfand
by
Jessica Helfand
ISBN-10: 1568983387
ISBN-13: 978-1568983387
ISBN-13: 978-1568983387
- Oratio Grassi's “tractatus De Sphaera” Now At Oklahoma University
"OU acquires rare Roman astronomy manuscript" April 5th, 2013 The Norman Transcript A rare manuscript written by a leading astronomer in Rome at the height of Galileo’s astronomical discoveries recently was acquired by the University of Oklahoma’s...
- J. E. E. Bessler [orffyreus]...an 18th Century Con Man?
Diagram of the wheel built by Orffyreus in Merseburg, taken from and based on an engraving published by Orffyreus in 1715. On the left is a side view and on the right a frontal view, both of the same device. The driving mechanism is supposedly hidden...
- New Book By David A. Weintraub..."how Old Is The Universe?"
How Old Is the Universe? by David A. Weintraub [David A. Weintraub is professor of astronomy at Vanderbilt University. He is the author of Is Pluto a Planet?: A Historical Journey through the Solar System.] ISBN-10: 0691147310 ISBN-13: 978-0691147314...
- William De Wiveleslie Abney...technical Photographer
William de Wiveleslie Abney July 24th, 1843 to December 3rd, 1920 Wikipedia... Abney was born in Derby, England, the son of Edward Abney (1811-1892) vicar of St Alkmund's Derby. He attended Rossall School, the Royal Military Academy, Woolwich and...
- A Birthday Celebration Today-- Freeman Dyson...#85
While he was in his 20s, Dyson made a huge contribution to science: He [with Feynman, Schwinger and Tomonaga] solved the central problem of quantum electrodynamics...a theory that describes how light and matter interact--without the credentials of a...