terrella

He placed a magnetized sphere, a "terrella" representing the Earth, inside a vacuum chamber, aimed a beam of electrons towards it and could see that they were steered by the magnetic field to the vicinity of its magnetic poles.

The Brussels Journal - The Voice of Conservatism in Europe 2009

In this work Gilbert describes many of his experiments with his model earth called the terrella.

Capsule Summaries of the Great Books of the Western World Jonathan Aquino 2009

In this work Gilbert describes many of his experiments with his model earth called the terrella.

Archive 2009-03-01 Jonathan Aquino 2009

Swift had visited the Royal Society where he would have seen the Gilbertian terrella described in the catalogue as “an orbicular loadstone, about four inches and 1/2 in Diameter.”

COSMIC VOYAGES MARJORIE HOPE NICOLSON 1968

By physical laws man knows but cannot control, microcosm and macro - cosm are combined: the terrella is “prodigious” as a magnet, yet it is a small power to govern the Flying

COSMIC VOYAGES MARJORIE HOPE NICOLSON 1968

To this round loadstone he gave the name of terrella -- that is, little earth.

A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904

Then move the middle or centre of the wire to another spot, and so to a third and fourth, always marking the stone along the length of the wire where it stands still; the lines so marked will exhibit meridian circles, or circles like meridians, on the stone or terrella; and manifestly they will all come together at the poles of the stone.

A History of Science: in Five Volumes. Volume II: The Beginnings of Modern Science 1904

Gilbert set great store by his invention of the terrella, since it led him to propound the true theory of the mariners 'compass.

Diary of Samuel Pepys — Complete 1663 N.S. Samuel Pepys 1668

In the Galileo Museum in Florence there is a terrella twenty-seven inches in diameter, of loadstone from Elba, constructed for Cosmo de 'Medici.

Diary of Samuel Pepys — Volume 24: September/October 1663 Samuel Pepys 1668

In the Galileo Museum in Florence there is a terrella twenty-seven inches in diameter, of loadstone from Elba, constructed for Cosmo de 'Medici.

Diary of Samuel Pepys — Complete 1663 N.S. Samuel Pepys 1668