A similar concept appears in Sir William Thomson's siphon recorder.
2.
The siphon recorder works on the principle of a d'Arsonval galvanometer.
3.
He patented the key elements of his system, the mirror galvanometer and the siphon recorder, in 1858.
4.
Lord Kelvin also devised a combined influence machine and electromagnetic machine, commonly called a mouse mill, for electrifying the ink in connection with his siphon recorder, and a water-drop electrostatic generator ( 1867 ), which he called the " " water-dropping condenser " ".
मोबाइल