Web Results

en.wikipedia.org/wiki/Metal_detector

A metal detector is an electronic instrument which detects the presence of metal nearby. Metal .... Another development was the invention of detectors which could cancel out the effect of mineralization in the ground. This gave greater depth, but ...

www.thoughtco.com/history-of-the-metal-detector-1992303

Sep 5, 2016 ... In 1881, Alexander Graham Bell invented the first metal detector. As President James Garfield lay dying of an assassin's bullet, Bell hurriedly ...

www.kellycodetectors.com/catalog/library/history-of-metal-detectors

During his convalescence, Garfield was visited by Alexander Graham Bell who invented the metal detector specifically to help locate the bullet. Unfortunately for  ...

www.toptenreviews.com/electronics/articles/the-history-of-metal-detectors

The story of the metal detector begins with the California Gold Rush. ... A Polish lieutenant created a more advanced version of the metal detector during World ...

paleofuture.gizmodo.com/walk-through-metal-detectors-were-invented-to-catch-thi-520336775

Jun 20, 2013 ... But back in the 1920s the first walk-through metal detectors weren't invented for finding weapons (or nail clippers), they were invented for ...

patch.com/minnesota/roseville/how-metal-detectors-invented-and-what-they-are-used-for

Jul 20, 2014 ... As we all know, metal detectors serve a wide range of utilitarian functions all around the world. However, at the very beginning, there were ...

www.ask.com/youtube?q=Who+Invented+The+Metal+Detector&v=CEWgZ273YJs
Nov 30, 2010 ... History of Invention of Metal Detector Metal detector is an electronic device which allows to detect metal objects in neutral or low-conductive ...

www.scitechantiques.com/belldiscovery

The first metal detector Dr. Bell's used on President Garfield was made using a ... In frustration they returned to a coil and circuit that Dr. Bell had created while ...

www.thegolddigger.com/blog/history-of-the-hobby/history-metal-detector

Aug 4, 2016 ... The very first metal detector was invented in 1881 by none other than the famous inventor and engineer, Alexander Graham Bell. That's right.

metaldetectorsa.co.za/frequently-asked-questions/hobby-metal-detectors/history-of-the-metal-detector

Alexander Graham Bell invented the world's first metal detector in 1881. Why did he do this? To retrieve a bullet from then president James Garfield who lay ...