Showing posts with label Electronics 9. Show all posts
Showing posts with label Electronics 9. Show all posts

Sunday, March 30, 2008

History of the first Leyden jars.

Answer the questions, based on the internet.

1. What did the ancient Greeks know about rubbing pieces of amber?

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2. What is the triboelectric effect,?

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3. What is another name gine to the triboelectric effect,?

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4. According to what does the polarity and strength of the charges produced differ?

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5. What is a dielectric?

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6. Who buit a crude friction generator around 1650?

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7. What did it consist of?

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8. Who found a method of storing large amounts of electric charge and in what year?

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9. How was it done?

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10. Why did the Kleistian jar go on to be known as the Leyden jar?

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11. What does the word “endurance” mean in terms of electricity or electronics?

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12. What is it’s formula?

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