torsion balance

The force is measured as a weight change, using a torsion balance.

It rather looked as if he had made his torsion balances and seismographs pay quite well for themselves.

The torsion balance consists of a bar suspended from its middle by a thin fiber.

Today torsion balances are still used in physics experiments.

Torsion balance used by Coulomb to establish a relation between charges and force, see above.

In addition, by using spin-polarized torsion balances, the electron sector has also been tested.

More sophisticated tests use a torsion balance of a type invented by Eötvös.

To detect possible deviations in the electron sector, spin-polarized torsion balances are used.

In the early 1900s gravitational torsion balances were used in petroleum prospecting.

Description of how torsion balances were used in petroleum prospecting, with pictures of a 1902 instrument.

In 1924, the torsion balance was used to locate the Nash Dome oil fields in Texas.

Prior to his famous doctoral studies on magnetism, he designed and perfected an extremely sensitive torsion balance for measuring magnetic coefficients.

The experiment was devised sometime before 1783 by geologist John Michell, who constructed a torsion balance apparatus for it.

With a Faraday balance the sample is placed in a magnetic field of constant gradient, and weighed on a torsion balance.

This idea has been tested to incredible precision by Eötvös torsion balance experiments, which look for a differential acceleration between two test masses.

Shows pictures of the Coulomb torsion balance, and describes Coulomb's contributions to torsion technology.

The value of the gravitational constant was derived from measurements that were made by Henry Cavendish in 1798 from his using a torsion balance.

Boys achieved recognition as a scientist for his invention of the fused quartz fibre torsion balance, which allowed him to measure extremely small forces.

He had suspended various test materials from a laboratory torsion balance and observed the effects of earth's gravity on objects of different sizes and composition.

To guard against the influence of air currents, the apparatus (called a torsion balance) was enclosed in a room and observed with telescopes mounted on each side.

In Coulomb's experiment, the torsion balance was an insulating rod with a metal-coated ball attached to one end, suspended by a silk thread.

The Eötvös torsion balance, an important instrument of geodesy and geophysics throughout the whole world, studies the Earth's physical properties.

The D'Arsonval movement used in mechanical pointer-type meters to measure electrical current is a type of torsion balance (see below).

Based on the same principle as the gold-leaf electroscope, repulsion electrometers are more sensitive indicating devices using a form of torsion balance.

For their measurements, which have an uncertainty of about .0015 percent, the University of Washington researchers used an improved version of a torsion balance.