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History of Science Museum

Print (Engraving, Etching) of the orbit trajectory of the earth and moon, by James Ferguson, Engraved by J. Bickham, 1745.

Inventory Number 13552


Acknowledgement: © History of Science Museum, University of Oxford, inv.13552

Item type
Object
Primary inscriptions
J. Ferguson del. J. Bickham sculp. To Martin Folkes Esq'r President of the Royal Society. This Plate is Dedicated by his most humble servant James Ferguson.
Physical material
Paper
Physical medium
Black ink
Physical technique
Engraving
Etching
Object type
Print
Dimensions
Height: 211mm Width: 974mm
Inventory No
13552

Description

Depicts the trajectory of the moon and earth from an instrument invented by Ferguson to demonstrate that the moon's orbit must always be concave to the sun, a 'trajectorium lunare'.

Dedicated to Martin Folkes, president of the Royal Society.