Definition of metal detector

The term "metal detector" can be traced back to the early 20th century when the technology to detect metallic objects began to emerge. Originally, metal detectors were known as "metal locators" or "metal finders" due to their ability to locate hidden metallic objects. The first practical metal detector was invented in the 1930s by Gerhard Fischrer, a German engineer. His device was designed to locate underground pipes and cables, but it was quickly realized that it could also be used to locate metallic objects buried in the ground, such as lost jewelry or buried treasure. The term "metal detector" became widely used in the 1940s as the technology became more advanced and popular. By the 1950s and 1960s, metal detectors were being sold to the public for hobby and recreational use, leading to the widespread use of the term "metal detecting" to describe the activity. Today, metal detectors are used in a variety of applications, including archaeology, security, recycling, and search and rescue operations. However, their origins as "metal locators" and "metal finders" serve as a reminder of their unique contribution to technology and their role in helping people locate hidden metallic objects.