| 摘要 |
A method for the precise measurement of the angular velocity of rotation over comparatively long periods is described, as is a plurality of methods for measuring voltage. The same device is basically used for such measurements, and it contains two concentric, electrically charged, superconducting tracks (11 and 12), screened against external magnetic fields and devices for current measurement in one of the tracks. When the tracks are rotated, the currents which are formed by the moving charges tend to build up a magnetic field in the space between the conductor loops, but since this space is located inside a superconducting conductor loop, a current flows in the tracks which prevents the magnetic field from being built up. Measuring the current produces a measure of the angular velocity of rotation. If, however, instead of this the tracks are rotated at a constant speed and an unknown voltage is applied between the tracks, the measured current indicates the applied voltage. <IMAGE>
|
