use of static electricity

use of static electricity

1. paint sprayers

   • bikes and cars are painted using electrostatic paint sprayers
   • the spray gun is charged
   • they drops repel each other so you get a fine spray
   • you get an even got and no shadowing

2. dust precipitation

   • particals reach a metal grid or rods with high voltage and a negative charge
   • the dust partical gain electrons and become negativly charged
   • these charges then change the dust particals
   • the dust then becomes attracted to the metal plate and they stick together
   • when they are heavey enough theyn fall of
   • so the gases coming out chimney have few smoke particals

3. defibillators

   • an electric shock to a stopped heart can make it start agian
     • this is because the heart is controlled by mini electric shocks
   • these machines are called defibillators
   • they consist of two paddles coneccted to a power supply
   • they are placed firmly on the chest for good electrical contact
   • everybody has to move away except the operator who hold insulated handles
   • the charge passes through the paddles to the heart to make it contract