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Static Electricity Generator & Cast Lightning

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Part of a physics class on static electricity. Includes some demonstrations not usually found in textbooks Homepage: http://www.thephysicsteacher.ie/ Blog: http://ozymandias1.wordpress.com/

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When two objects are rubbed together to create static electricity, one object gives up electrons and becomes more positively charged while the other material collects electrons and becomes more negatively charged. This is because one material has weakly bound electrons, and the other has many vacancies in its outer electron shells, so electrons can move from the former to the latter creating a charge imbalance after the materials are separated.

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The charge remains until it is able to move away by means of an electric current or electrical discharge. Static electricity is named in contrast with current electricity, which flows through wires or other conductors and transmits energy.

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- rob hair with balloon, it will stick on the wall

- Different materials hold on to their electrons with different strengths

－Static electricity can be a nuisance or even a danger. The energy that makes your hair to stand on end can also damage electronics and cause explosions.

-static electricity can be a nuisance or even a danger, as in the case of static cling or static shock, in other cases it can be quite useful.

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-Electrons from the atoms in one material can transfer to atoms in another material

-Any net charge on a solid object, whether it is positive or negative, results from the transfer of electrons between this object and another object