And inside that was a precise set of scales known as a torsion balance.
Eötvös obtained much better discrimination with a 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.
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.
The apparatus employed was a torsion balance, essentially a stretched wire supporting spherical weights.
Its suspension system was a torsion bar design developed by Buick engineers.
The toy itself was invented by Mrs. James's husband, Richard, after he saw a torsion spring fall onto the deck of a ship.
Long compared the maximum attractions of two rings upon a test mass hung from the arm of a torsion balance.
All Elantra models are suspended on McPherson struts up front and a torsion beam at the rear.
Just as the left and right sides of an embryo are differentiating, he said, "a torsion of the head to the right is observed shortly after the development of the heart -- asymmetrically positioned -- and the coiling direction of the intestine".
In one, conducted by the American physicist Riley Newman and his colleagues, a test mass hung on a torsion balance was moved around in a long hollow cylinder.
