Ferguson's epicyclic diagram, 1756

Ferguson's epicyclic diagram, 1756

V700/0358 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 51.1MB

Downloadable file size: 1.7MB

Price image Pricing

Please login to use the price calculator


Caption: Ferguson's epicyclic diagram. This diagram was published in 1756 by the Scottish astronomer and instrument maker James Ferguson (1710-1776), in his book Astronomy explained upon Sir Isaac Newton's Principles. Figure I (left) shows the Earth at centre, with the Sun tracing a circular orbit. The orbits of Mercury and Venus in this geocentric system are shown by a series of complex epicycles. Figure IIII (upper right) shows the phases of the Moon. Figure III (lower right) shows the Sun and Moon and the celestial equator and ecliptic, and Earth's axial inclination. Figure II (to the left of figure III) shows how the Earth's axial tilt causes the seasons.

Release details: Model release not required. Property release not required.

Keywords: 1700s, 1756, 18th century, annotated, annotations, artwork, astronomical, astronomy, astronomy explained upon sir isaac newton's principles, axial inclination, axial tilt, axis, black-and-white, celestial equator, celestial mechanics, diagram, diagrams, drawing, earth, ecliptic, epicycle, epicycles, epicyclic, historical, history, history of science, illustration, inner solar system, james ferguson, lunar, mercurian, mercury, monochrome, moon, orbit, orbital, orbital mechanics, orbits, phase, phases, physical, physics, planet, planetary science, research, scottish, seasonal, seasons, space, star, sun, terran, text, theory, venus, venusian

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.