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Franklin's friend Kinnersley traveled throughout the eastern United States in the 1750s demonstrating man-made "lightning" on model thunder houses to show a how an iron rod placed into the ground would protect a wooden structure. He explained that lightning followed the same principles as the sparks from Franklin's electrostatic machine.
Camera model: DSC-H55: Exposure time: 1/4 sec (0.25) F-number: f/3.5: ISO speed rating: 800: Date and time of data generation: 11:06, 20 October 2011: Lens focal length: 4.25 mm: Horizontal resolution: 72 dpi: Vertical resolution: 72 dpi: Software used: Picasa: File change date and time: 11:06, 20 October 2011: Y and C positioning: Co-sited ...
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 ...
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 ...
The name of Gordon was not always mentioned, though both inventions are fully described by him in his Versuch einer Erklarung der Electricitat (Erfurt 1745). Benjamin Franklin , who is usually credited with the latter invention, simply adopted the "German chimes" (described by Watson in his famous Sequel , 1746) to serve as an electrical ...
1663 – Otto von Guericke (brewer and engineer who applied the barometer to weather prediction and invented the air pump, with which he demonstrated the properties of atmospheric pressure associated with a vacuum) constructs a primitive electrostatic generating (or friction) machine via the triboelectric effect, utilizing a continuously ...
A portrait of Franklin c. 1746–1750, [Note 3] by Robert Feke widely believed to be the earliest known painting of Franklin [69] [70] Join, or Die, a 1754 political cartoon by Franklin, urged the colonies to join the Seven Years' War in the French and Indian War; the cartoon was later resurrected, serving as an iconic symbol in support of the ...
The Library Company of Philadelphia (LCP) is a non-profit organization based on Locust Street in Center City Philadelphia.Founded as a library in 1731 by Benjamin Franklin, the Library Company of Philadelphia has accumulated one of the most significant collections of historically valuable manuscripts and printed material in the United States.