Static Electricity Videos youtube/watch?v=VhWQ-r1LYXY

1. Static Electricity Videos http://www.youtube.com/watch?v=VhWQ-r1LYXY http://www.youtube.com/watch?v=WohRAM4_NQg http://www.youtube.com/watch?v=b89x8CAS6xU

2. Applications of Static Electricity

3. Applications of Static Electricity Grounding: connecting an object to a large body, like Earth, that is capable of removing any excess electric charge on the object

4. Applications of Static Electricity Grounding: connecting an object to a large body, like Earth, that is capable of removing any electric charge on the object Negative object: excess electrons flow from the object to the Earth until it is neutral

5. Applications of Static Electricity Grounding: connecting an object to a large body, like Earth, that is capable of removing any electric charge on the object Negative object: excess electrons flow from the object to the Earth until it is neutral Positive object: electrons flow from the Earth to the object until it is neutral

6. Applications of Static Electricity electrostatic spray painting electrostatic precipitator electrostatic duster

7. Paint Spraying

8. Summary of Paintspraying The paint is charged as it comes out of the nozzle. The paint spreads out in a spray due to repulsion The car must be connected to the opposite voltage. The paint is attracted to the oppositely charged car. The paint is applied evenly all over

9. The defibrillator Saving your life!

10. What is Fibrillation ? Normal heart rhythm • In some heart conditions the electrical impulses which are necessary for the proper operation of the heart fall into disorder • The heart chambers flutter rather than pulse rhythmically. • Little or no blood will be pumped like this so the sufferer is in mortal danger. Trace showing ventricular fibrillation

11. Defibrillation In order to save the life of someone with a fibrillating heart a defibrillator can be used. Electrolyte gel is smeared on electrodes (known as paddles) which are placed on the patients body either Side of the heart. A large voltage is applied across these electrodes to drive a current through the patient’s heart. This current can restore normal heart rhythms. If a persons heart is showing no electrical impulses then defibrillation will not revive them.

12. Safety • It is important when using a defibrillator that no one touches the patient or any exposed contacts on the defibrillator Clear! • Or else they may become the next patient! • A big enough electric shock can cause defibrillation.

13. Applications of Static Electricity Electrostatic Spray Painting: positively charge the object and negatively charge the paint particles opposite charges attract -paint particles are attracted to the object and less is lost as over spray

14. Applications of Static Electricity Electrostatic Duster: rubbing the duster across a surface causes the duster to become charged by friction.

15. Applications of Static Electricity Electrostatic Duster: rubbing the duster across a surface causes the duster to become charged by friction. charged objects attract neutral objects

16. Applications of Static Electricity Electrostatic Duster: rubbing the duster across a surface causes the duster to become charged by friction. charged objects attract neutral objects -neutral dust particles stick to charged duster

17. Applications of Static Electricity Electrostatic Precipitator: a device to remove dust particles from the exhaust gas from industry

18. Applications of Static Electricity Electrostatic Precipitator: a device to remove dust particles from the exhaust gas from industry 1. smoke particles pick up a negative charge

19. Applications of Static Electricity Electrostatic Precipitator: a device to remove dust particles from the exhaust gas from industry 1. smoke particles pick up a negative charge 2. charged particles are attracted to positive plates 3. clumps of smoke particles collect up on trays and are removed for disposal

20. Applications of Static Electricity Photocopying: selenium is an insulator but becomes a conductor when exposed to light

21. Photocopiers

22. How it works A Photocopier uses static charge to apply toner (black powder) to the paper • A high voltage charged wire transfers positive charge to the drum

23. 2. The Drum becomes charged evenly over its whole surface.

24. 3. Light removes charge from the parts which are not to be printed.

25. 4. Charge attracts toner particles.

26. 5. Toner is rolled onto the page

27. 6. Toner is melted onto the paper.

28. Applications of Static Electricity

29. Applications of Static Electricity