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Frog's-leg galvanoscope. The frog galvanoscope was a sensitive electrical instrument used to detect voltage [1] in the late 18th and 19th centuries. It consists of a skinned frog's leg with electrical connections to a nerve. The instrument was invented by Luigi Galvani and improved by Carlo Matteucci.
Because Valli found himself on the wrong side in this dispute, and refused to change his opinion despite the evidence, his work has become a bit of a backwater and his frog battery is little known and poorly documented. [6] Aldini's 1803 ox-head battery. Leopoldo Nobili built a frog battery in 1818 out of complete frog legs which he called a ...
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The first scroll, which is considered the most famous, depicts various animals (frogs, rabbits and monkeys) frolicking as if they were human. [6] [8] [18] There is no writing on any of the scrolls; they consist of pictures only. [19] The first scroll is also the largest, with a length of 11 meters (36 ft) and 30 cm (1 ft) wide. [8]
An early D'Arsonval galvanometer showing magnet and rotating coil. A galvanometer is an electromechanical measuring instrument for electric current.Early galvanometers were uncalibrated, but improved versions, called ammeters, were calibrated and could measure the flow of current more precisely.
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For some people it's hard enough to just sit comfortable with one leg over the other -- and men especially. After Imgur user SickOfFeelingNumb posted the photo , hundreds of people began commenting.
The dog could also be simply a lap dog, a gift from husband to wife. Many wealthy women in the court had lap dogs as companions, reflecting wealth or social status. [17] During the Middle Ages, images of dogs were often carved on tombstones to represent the deceased's feudal loyalty or marital fidelity. [18]