| View Cart ⇗ | Info

“The Gyroscope is an instrument constructed by M. Foucault to make the rotation of the earth visible. The principle on which it proceeds is this– that, unless gravity intervene, a rotating body will not alter the direction in which its permanent axis points. In the gyroscope there is a rotating metallic disk, the middle point of whose axis is also the center of gravity of the machine. By this device the action of gravity is eliminated."—(Charles Leonard-Stuart, 1911)




Everybody's Cyclopedia (New York, NY: Syndicate Publishing Company, 1912)


TIFF (full resolution)

2164×2400, 1.1 MiB

Large GIF

923×1024, 142.6 KiB

Medium GIF

577×640, 71.1 KiB

Small GIF

288×320, 25.6 KiB