| 单词 | potential gradient |
| 释义 | > as lemmaspotential gradient potential gradient n. Physics a continuous increase or decrease in electric potential along a line between two points; the rate of change of electrical potential with distance. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > voltage > electrical potential > [noun] > rate of change potential gradient1887 1887 Science 9 236 Professor Exner..gives results of some experiments..which show the potential gradient to be of uncertain value, and influenced largely by the proximity of buildings and walls. 1931 Discovery July 212/1 Measurements of potential gradient have been made in balloons up to a height of nine kilometres. The gradient falls off rapidly, most of the positive charge being in the lower strata. 1973 R. Brown Electr. & Atomic Physics xii. 270 There is a potential gradient in the depletion layer, positive on the n side and negative on the p side, and this represents a potential barrier. 2001 New Scientist 6 Jan. 18/2 During these electrical ‘storms’, scientists have recorded abnormally high electric fields and many believe these fields are responsible for the noises auroras emit. They suggest that they cause ‘brush discharge’, which occurs when electric fields induce an electric potential gradient in objects on the ground. < as lemmas |
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