Capacitor

A capacitor is an electrical/electronic device that can store energy in the electric field between a pair of conductors (called "plates"). The process of storing energy in the capacitor is known as "charging", and involves electric charges of equal magnitude, but opposite polarity, building up on each plate.
Capacitors are often used in electric and electronic circuits as energy-storage devices. They can also be used to differentiate between high-frequency and low-frequency signals. This property makes them useful in electronic filters.
Capacitors are occasionally referred to as condensers. This is considered an antiquated term in English, but most other languages use an equivalent, like "Kondensator" in German, "Condensador" in Spanish, or "Kondensa" in Japanese.
In October 1745, Ewald Georg von Kleist of Pomerania in Germany invented the first recorded capacitor: a glass jar with water inside as one plate was held on the hand as the other plate. A wire in the mouth of the bottle received charge from an electric machine, and released it as a spark.[1]

In the same year, Dutch physicist Pieter van Musschenbroek independently invented a very similar capacitor. It was named the Leyden jar, after the University of Leyden where van Musschenbroek worked. Daniel Gralath was the first to combine several jars in parallel into a "battery" to increase the total possible stored charge.
Benjamin Franklin investigated the Leyden jar, and proved that the charge was stored on the glass, not in the water as others had assumed. The earliest unit of capacitance was the 'jar', equivalent to about 1 nF.

Early capacitors were also known as condensers, a term that is still occasionally used today. It was coined by Alessandro Volta in 1782 (derived from the Italian condensatore), with reference to the device's ability to store a higher density of electric charge than a normal isolated conductor.
Most non-English European languages still use a word derived from "condensatore".

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Answer the questions, based on the dialog above, and translate the answers.

Some answers will be found on the internet.
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1. What is a capacitor?
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2. What is another name given to conductors?
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3. Give an example of the materials used in conductors?
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4. Why are the materias mentioned in # 3 used?
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5. How is the process of storing energy in the capacitor is known as?
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6. What does this process involve?
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7. What builds up on each plate as a resolt?
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8. How are capacitors often used in electric and electronic circuits?
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9. How can they also be used?
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10. Who invented the first recorded capacitor, in what month & year?
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11. Who invented the Leyden jar?
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12. Who investigated the Leyden jar, and proved that the charge was stored on the glass, not in the water as others had assumed?
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