Measuring the size of the Earth, 1671

Measuring the size of the Earth, 1671

C008/4423 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 52.5MB

Downloadable file size: 3.9MB

Price image Pricing

Please login to use the price calculator


Caption: Measuring the size of the Earth. Surveyors measuring angles for triangulation at night, during the 1669-1670 survey to determine the size of the Earth. The other corners of the triangulation triangle are marked by beacon fires (top left and top right). This survey was carried out by the French astronomer Jean Picard (1620-1682) using 13 triangulation triangles from Paris to Sourdon, along the Paris Meridian. By using telescopes and micrometers, the result was the most accurate of the time. This artwork, by French illustrator Sebastien Leclerc (1637-1714), is a frontispiece vignette from Picard's book Mesure de la Terre (1671).

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

Keywords: 1600s, 1669, 1670, 1671, 17th century, adult, artwork, astronomer, astronomical, astronomy, beacon fire, black-and-white, caucasian, circumference, distance, distances, europe, european, france, french, frontispiece, geographer, geographical, geography, historical, history, history of science, human, illustration, instrument, instruments, jean picard, longitude, male, man, men, mesure de la terre, micrometer, monochrome, night, paris meridian, people, person, scientist, scientists, sebastien leclerc, size of the earth, surveying, surveying equipment, surveyor, surveyors, telescope, triangle, triangular, triangulation, vignette, white

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