Before you begin searching for buried treasure with a metal detector, you need to learn the laws governing such finds and ...

Eclipsed by his fame as the inventor of the telephone, phonograph, metal detector, and early forms of the hydrofoil (among other machines) is the extensive work that Alexander Graham Bell did with ...

Alexander Graham Bell ... a key role in early aircraft development. The Metal Detector: When President James Garfield was shot in 1881, Bell rushed to build a device to locate the bullet inside ...