Pre the flick-of-a-switch

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Pre the flick-of-a-switch

  1. 1. By Connor Bennett
  2. 2. The Problem  The world’s power demands are ever increasing.  Menial devices such as lights and air conditioners use electricity on a daily basis, but this consumption could otherwise be diverted.
  3. 3. The Idea  Instead of constructing buildings with air conditioner units and lighting equipment, privacy glass should be incorporated into the structures.  Likewise, current buildings should be renovated with privacy glass, to maximise the results of this idea.
  4. 4. How it Works  When an electric current is applied, the minute liquid crystals suspended in a di- electric medium in the glass are aligned in one direction allowing the incident light to pass through.  When the electric current is switched off, the liquid crystals align randomly thus scattering light. This causes the glass to turn ‘private’.
  5. 5. How will it Solve the Problem? The application of privacy glass on a widespread scale will decrease the electrical consumption of the world – reducing our carbon footprint.  Fewer lights will be needed and the ability of privacy glass to allow different amounts of light to enter a room can also change the heat of the room, replacing the need for an air conditioner.

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