How Metal Detectors Work

How Metal Detectors Work The first metal detector was produced in 1881 by Alexander Graham Bell to identify the bullet lodged in the body of President James Garfield when he was assassinated. The very first portable version was patented in 1931 by Fischer. Since then,...

Just how Metal Detectors Work

Just how Metal Detectors Work The initial steel detector was generated in 1881 by Alexander Graham Bell to recognize the bullet lodged in the body of President James Garfield when he was executed. Below are some understandings on the features of steel detectors....