Metal detectors are used to find metal objects buried in the ground or hidden inside other objects.
In this blog post, we will explore the history behind these handy devices and how they have changed throughout time.Metal detectors were invented by a German physicist named Alexander Graham Bell.
He is best known for inventing the telephone, but he also had other hobbies and interests such as archaeology.Metal detectors became popular in World War II when they were often used to find landmines that soldiers might step on and explode.
They have been widely adopted since then due to their accuracy and ease of use compared with older devices like dowsing rods or metal probes which required more time and manual work from the user to produce results.
The signal is displayed in one of two ways, either through an audio speaker which emits different pitches based on how close something is to the detector (this method works over longer distances) or through visual display using LEDs.
This type requires shorter ranges but gives better detail about what has been detected since it will show exactly where the potential target was found for the person operating the machine.As you can imagine, early metal detectors were not very powerful.