(Biography)John.1751–80, British major who was hanged as a spy for conspiring with Benedict Arnold during the War of American Independence Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011...
(to measure it, he invented the magnetometer). With his Göttingen colleague, the physicistWilhelm Weber, he made the first electric telegraph, but a certain parochialism prevented him from pursuing the invention energetically. Instead, he drew important mathematical consequences from this work for ...