Search results
Results from the WOW.Com Content Network
An electrostatic generator, or electrostatic machine, is an electrical generator that produces static electricity, or electricity at high voltage and low continuous current. The knowledge of static electricity dates back to the earliest civilizations, but for millennia it remained merely an interesting and mystifying phenomenon , without a ...
Stray static electric charges on the experimenter's body, clothes, or nearby apparatus, as well as AC electric fields from mains-powered equipment, can induce additional charges on parts of the container or charged object C, giving a false reading. The success of the experiment often requires precautions to eliminate these extraneous charges:
Benjamin Franklin's experiment with bells and a lightning rod has remained a popular example of electric phenomena in modern times. The experiment has been adapted and updated, and is now commonly used in classrooms and demonstrations to illustrate a variety of concepts related to electricity.
Summary of electrostatic relations between electric potential, electric field and charge density. Here, r = x − x ′ {\displaystyle \mathbf {r} =\mathbf {x} -\mathbf {x'} } . If the electric field in a system can be assumed to result from static charges, that is, a system that exhibits no significant time-varying magnetic fields, the system ...
Franklin's electrostatic machine on display at the Franklin Institute Its key components are a glass globe which turned on an axis via a crank , a cloth pad in contact with the spinning globe, a set of metal needles to conduct away the charge developed on the globe by its friction with the pad, and a Leyden jar – a high-voltage capacitor ...
Franklin bells — demonstrate electric charges; Oxford Electric Bell — an experimental electric bell that was set up in 1840 and which has run nearly continuously ever since; Wimshurst machine — an electrostatic generator; Shooting a candle through a plank; Foucault pendulum — demonstrates the rotation of Earth
The Kelvin water dropper, invented by Scottish scientist William Thomson (Lord Kelvin) in 1867, [1] is a type of electrostatic generator. Kelvin referred to the device as his water-dropping condenser. The apparatus is variously called the Kelvin hydroelectric generator, the Kelvin electrostatic generator, or Lord Kelvin's thunderstorm.
Demonstration Earth's rotation: 1852 Foucault's gyroscope: Léon Foucault: Demonstration Earth's rotation: 1867 Kelvin water dropper: Lord Kelvin (William Thomson) Demonstration Electrostatic generator: 1867 Tyndall's bar breaker: John Tyndall: Demonstration Thermal expansion forces 1885 Eötvös experiment: Loránd Eötvös: Measurement