Recent content by EngPhy

  1. EngPhy

    A Effect of visible light on conductivity

    Good answer, thank you
  2. EngPhy

    A Effect of visible light on conductivity

    Are metals better conductors in the presence of visible light? Considering photons in visible spectrum are not energetic enough to induce emission from a metal surface but they do cause the ejection of 'conduction electrons' which are bound to the metal by a few electron volts.
  3. EngPhy

    How to lift water up to 5 metres without using a pump?

    Add stones until the level rises to 5m!
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