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• Alkali metal
  ...ment of the alkali metal group. It is used in photoelectric cells and as a getter in vacuum tubes.
  2 KB (310 words) - 02:11, 3 March 2024
• Vacuum pump
  ...or can involve materials that chemically bind or adsorb the gas molecules (getter pumps). Entrapment pumps are used for creating ultra-high to extreme vacuum
  3 KB (430 words) - 16:44, 24 March 2024
• Caesium
  ...city generation]] and transmission, in [[photoelectric cells]], and as a [[getter]] in [[vacuum tubes]].
  3 KB (437 words) - 22:16, 19 April 2024
• Color psychology
  ...activity, and generates muscle energy. Bright, pure yellow is an attention getter, which is the reason taxicabs are painted this color.
  3 KB (520 words) - 18:10, 17 March 2024