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The following is adapted from a contemporary account of Thomson's instrument: [2] The mirror galvanometer consists of a long fine coil of silk-covered copper wire. In the heart of that coil, within a little air-chamber, a small round mirror is hung by a single fibre of floss silk, with four tiny magnets cemented to its back.
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.
The operation of the Kelvin bridge is very similar to the Wheatstone bridge, but uses two additional resistors. Resistors R 1 and R 2 are connected to the outside potential terminals of the four terminal known or standard resistor R s and the unknown resistor R x (identified as P 1 and P′ 1 in the diagram).
The Oklahoma City Thunder and Alex Caruso agreed to a four-year, $81 million contract extension on Sunday night, his agent told ESPN’s Shams Charania. The Thunder announced the extension on ...
2/3 cup jam or preserves. Preheat the oven to 350°F. Lightly spray an 8x8 pan with cooking spray or line with parchment paper. Crumble about 2/3 of the cookie dough into the pan and press into an ...
An alert designated to warn people of a fire northwest of downtown Los Angeles was sent county-wide, according to a local official. At the time, emergency management was monitoring the Kenneth ...
Thomson's father, James Thomson, was a teacher of mathematics and engineering at the Royal Belfast Academical Institution and the son of an Ulster Scots farmer. James Thomson married Margaret Gardner in 1817 and, of their children, four boys and two girls survived infancy.
On July 14, 2022, YouTube made a special playlist and video celebrating the 317 music videos to have hit 1 billion views and joined the "Billion Views Club". [ 65 ] [ 66 ] On April 1, 2024, the communications app Discord incorporated a short trailer video into their in-app April Fools' Day prank regarding loot boxes .