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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 ...
Directly to Franklin's right is another group of cherubs tinkering with a tool. Franklin's right arm, the Cherub to his right, and the Cherub to his left, come together to form a triangle, the compositional foundation of the entire painting. The arrangement directs the viewers' eyes to Franklin's hand and the lightning key.
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