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Thus a change of voltage applied to the grid, requiring very little power input to the grid, could make a change in the plate curre ...New York]]) had improved [[Wolfgang Gaede]]'s [[diffusion pump|high-vacuum diffusion pump]] and used it to settle the question of thermionic emission and conduc ...

...in August 2009 from 11:00 am to 5:00 pm (CST) and separated them into six categories.<ref>{{Cite book |url=http://www.pearanalytics.com/blog/wp-content/uploads/ ...ising which do not allow the promotion of false or misleading content, and requiring advertisers to comply with laws, with compliance being the sole responsibil ...