needle electroscope

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• Electroscope — An electroscope is an early scientific instrument that is used to detect the presence and magnitude of electric charge on a body. It was the first electrical measuring instrument. The first electroscope, a pivoted needle called the versorium ,… …   Wikipedia

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• Versorium — (Latin turn around ) is a device for detecting the presence of static electricity and the first known electrical device.cite journal author = Brian Davies, year = 1980 title = To make a vain man humble journal = Physics Education volume = 15… …   Wikipedia

• History of electrochemistry — Electrochemistry, a branch of chemistry, went through several changes during its evolution from early principles related to magnets in the early 16th and 17th centuries, to complex theories involving conductivity, electrical charge and… …   Wikipedia

• Invention of the telephone — The modern telephone is the result of work done by many people, all worthy of recognition of their contributions to the field. Alexander Graham Bell was the first to patent the telephone, an apparatus for transmitting vocal or other sounds… …   Wikipedia

• Electricity — (from the Greek word ήλεκτρον, (elektron), meaning amber, and finally from New Latin ēlectricus , amber like ) is a general term that encompasses a variety of phenomena resulting from the presence and flow of electric charge. These include many… …   Wikipedia

• William Gilbert — Infobox Person name = William Gilbert caption = Dr William Gilbert birth date = May 24, 1544 birth place = Colchester death date = November 30, 1603 death place = London occupation = physician, natural philosopherWilliam Gilbert, also known as… …   Wikipedia