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The water thread experiment is a phenomenon that occurs when two containers of deionized water, placed on an insulator, are connected by a thread, then a high-voltage positive electric charge is applied to one container, and a negative charge to the other. At a critical voltage, an unsupported water liquid bridge is formed between the ...
Conductivity or specific conductance of an electrolyte solution is a measure of its ability to conduct electricity. The SI unit of conductivity is siemens per meter (S/m). Conductivity measurements are used routinely in many industrial and environmental applications as a fast, inexpensive and reliable way of measuring the ionic content in a ...
John Theophilus Desaguliers, "A Dissertation concerning Electricity" Innys and Longman, London MDCCXLII (1742) Joseph Priestley, "The History and Present State Of Electricity with Original Experiments by, Volumes I, II, and III (MDCCLXVII) (1747) James Ferguson, "An Introduction to Electricity", W. Strahan and T. Cadell, London MDCCLXX (1770)
A moist pickle contains salt as a result of the pickling process, which allows it to conduct electricity. Sodium (or other) ions within the pickle emit light as a result of atomic electron transitions , although it is not clear why the luminescence occurs at one end of the pickle.
Experiments involving triboelectricity and static electricity occurred before the discovery of the electron. The name ēlektron (ἤλεκτρον) is Greek for amber , [ 10 ] [ 11 ] which is connected to the recording of electrostatic charging by Thales of Miletus around 585 BCE, [ 12 ] and possibly others even earlier.
Armstrong Hydroelectric Machine. The Armstrong effect is the physical process by which static electricity is produced by the friction of a fluid. It was first discovered in 1840 when an electrical spark resulted from water droplets being swept out by escaping steam from a boiler.
He also suggested that electricity is more akin to magnetism and light than to a fluid, since it passes through glass and cloth, and can be concentrated as a spark to light up flammable materials. On 14 August 1747 he made an experiment to conduct electricity through a 6,732 foot long wire at Shooter's Hill in London. At another experiment he ...
This discovery overturned what he termed "one of the earliest and universally received maxims of electricity," that only water and metals could conduct electricity. Such experiments demonstrate that Priestley was interested in the relationship between chemistry and electricity from the beginning of his scientific career. [6]