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Franklin's electrostatic machine on display at the Franklin Institute. Franklin's electrostatic machine is a high-voltage static electricity-generating device used by Benjamin Franklin in the mid-18th century for research into electrical phenomena.
Electrostatic machines are typically used in science classrooms to safely demonstrate electrical forces and high voltage phenomena. The elevated potential differences achieved have been also used for a variety of practical applications, such as operating X-ray tubes, particle accelerators, spectroscopy, medical applications, sterilization of food, and nuclear physics experiments.
Experiments and Observations on Electricity is a treatise by Benjamin Franklin based on letters that he wrote to Peter Collinson, who communicated Franklin's ideas to the Royal Society. [ 1 ] [ 2 ] The letters were published as a book in England in 1751, and over the following years the book was reissued in four more editions containing ...
In the 1740s and 1750s, the first electrostatic motors were developed by Andrew Gordon and by Benjamin Franklin. Today the electrostatic motor finds frequent use in micro-mechanical ( MEMS ) systems where their drive voltages are below 100 volts, and where moving, charged plates are far easier to fabricate than coils and iron cores.
Electrostatic motor; ESD turnstile; F. Faraday cage; Faraday's ice pail experiment; Field effect (chemistry) Franklin's electrostatic machine; G. Gauss's law ...
Exhibit from the Benjamin Franklin collection in the Franklin Institute, Philadelphia, Pennsylvania, USA. ... Franklin's electrostatic machine; Global file usage.
Priestley's famous text supported the distribution of Franklin's research, which helped it becoming one of the most important works on electricity in the late 18th century. [ 4 ] Joseph Priestley 's electrical machine, illustrated in the first edition of his Familiar Introduction to Electricity (1768)
Before these particles were discovered, Benjamin Franklin had defined a positive charge as being the charge acquired by a glass rod when it is rubbed with a silk cloth. [34] A proton by definition carries a charge of exactly 1.602 176 634 × 10 −19 coulombs. This value is also defined as the elementary charge. No object can have a charge ...