Recent content by EngPhy

  1. EngPhy

    Graduate Effect of visible light on conductivity

    Good answer, thank you
  2. EngPhy

    Graduate 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

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

    Add stones until the level rises to 5m!