Metal detectors work by sending and receiving electromagnetic fields. A search coil sends an electromagnetic field into the ground. That field energizes any metal object it contacts, then the object sends an electromagnetic field back up. Once that field reaches the search coil, it is detected and an alert sounds on the metal detector.Continue Reading
Metal detectors have a variety of uses. They have been used for archaeology since 1958. Many people use metal detectors as a hobby, looking for coins or valuable items buried underground. There are even metal detecting clubs in which hobbyists meet and socialize.
Metal detectors are also used for security purposes. Soldiers use metal detectors to search for land mines, and metal detectors are used in certain areas, such as airports, to check people for concealed weapons. They are also used to inspect goods, such as food and clothes, for metal fragments before consumers can purchase them.
The first metal detectors were created in the late 19th century. Gerhard Fisher came up with the idea of using a search coil resonating at a radio frequency, and in 1925 he obtained the first patent for a metal detector. Smaller metal detectors started being manufactured in the 1950s with the development of the transistor.Learn more about Hobbies & Games
The best metal detectors for 2015 include the Fisher F4, the Garret Ace 250 and the Teknetics Delta 4000, according to Top Ten Reviews. These metal detectors win praise for their efficiency and ease of use.Full Answer >
To tell if something is brass, clean a section of the metal, check its color and test whether a magnet sticks to the object. Brass has a distinct, bright gold color, and because it isn't ferromagnetic, it doesn't attract magnets.Full Answer >
Home improvement or do-it-yourself store chains such as Lowe's and The Home Depot offer tool rental services, including metal detector rentals. Many lawn and landscaping stores, such as Sunbelt Rentals, also rent metal detectors. Some beach shops offer metal detector rentals as well.Full Answer >
A metal detector can be purchased from a wide variety of retailers and individual sellers in the United Kingdom. For instance, Tesco direct offers several varieties of metal detectors ranging from ?21.18 to ?85.00.Full Answer >