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Broken-down transformers, high-voltage cables, bushings, and other equipment can usefully be investigated in this manner. The insulation is unrolled (in the case of paper insulation) or sliced in thin slices (in the case of solid insulating materials). The results are then sketched or photographed to create a record of the breakdown process.
weather: Hurricane Katrina's rate of release of latent heat energy into the air. [48] 3 × 10 14: tech: power reached by the extremely high-power Hercules laser from the University of Michigan. [citation needed] 4.6 × 10 14: geo: estimated rate of net global heating, evaluated as Earth's energy imbalance, from 2005 to 2019.
Electrical treeing first occurs and propagates when a dry dielectric material is subjected to high and divergent electrical field stress over a long period of time. . Electrical treeing is observed to originate at points where impurities, gas voids, mechanical defects, or conducting projections cause excessive electrical field stress within small regions of the di
IEC 60136 Dimensions of brushes and brush-holders for electrical machinery; IEC 60137 Insulated bushings for alternating voltages above 1000 V; IEC 60139 Preparation of outline drawings for cathode-ray tubes, their components, connections and gauges; IEC 60141 Tests on oil-filled and gas-pressure cables and their accessories
The characteristic energy length scale describes the size of the region from which energy flows to a rapidly moving crack. If material properties change within the characteristic energy length scale, local wave speeds can dominate crack dynamics. This can lead to supersonic fracture.
A simple application of dimensional analysis to mathematics is in computing the form of the volume of an n-ball (the solid ball in n dimensions), or the area of its surface, the n-sphere: being an n-dimensional figure, the volume scales as x n, while the surface area, being (n − 1)-dimensional, scales as x n−1.
Apple. Apple (NASDAQ:AAPL) is a company that people just love to doubt. The stock started 2024 with a pretty expensive multiple, only to end the year with an even pricier one (shares go for almost ...
Estimated rotational energy of M87 SMBH and total energy of the most luminous quasars over Gyr time-scales [334] [335] ~2×10 57 J Estimated thermal energy of the Bullet Cluster of galaxies [336] 7.3×10 57 J Mass-energy equivalent of the ultramassive black hole TON 618, an extremely luminous quasar / active galactic nucleus (AGN). [337] [338 ...
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