Sentence Examples


  • This will be composed of a conduction and a convection current, the latter due to rising or falling air currents carrying ions.
  • Wilson considers that convection currents in the upper atmosphere would be quite inadequate, but conduction may, he thinks, be sufficient alone.
  • Dust particles interfere with conduction near the ground, so the relative conductivity in the upper layers may be much greater than that calculated.
  • Wilson supposes that by the fall to the ground of a preponderance of negatively charged rain the air above the shower has a higher positive potential than elsewhere at the same level, thus leading to large conduction currents laterally in the highly conducting upper layers.
  • The object of all heating apparatus is the transference of heat from the fire to the various parts of the building it is intended to warm, and this transfer may be effected by radiation, by conduction or by convection.

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