The most often used place for metal detectors is at the airports for check-ins and in high security areas.
Whether you are carrying metallic object in your shirt or in a bag, the metal detector is going to detect it. Even when the metallic objects are lying on the ground, metal detectors can detect those too.
Metal detectors can see through non-metallic surfaces. No wonder, it can see inside your bag, and detect the metallic piece instantly.
Metal detectors don't only find applications in security areas, but are abundantly used in treasure hunting as well and for finding lost items that consist of metal.
This wonderful application of science was invented by none other than the legendary Alexander Graham Bell. That was more than 125 years back in the year 1881. Fischer came out with a portable metal detector in the year 1931.
There have been many more modifications on the first portable detector made by Fischer. Hans Oersted was responsible for discovering electromagnetism. This happened in the year 1820.
Metal detectors work on the principle of electromagnetism. Electromagnetism is the science of studying two forces: those of electricity and magnetic in tandem with each other.
Metal detectors are supposed to be very good conductors of electricity and magnetism. Therefore it is but natural that the metal detector is affected by electromagnetism in the surrounding.
A high-powered coil generates magnetic effect with the help of power generated by the attached battery. When this electromagnetic field penetrates the ground the metals tend to get charged with magnetism.
The coil detects the electromagnetic behaviour and a signal is sent to the electronic box. The speaker attached to the electronic box beeps and the operator immediately becomes aware of the presence of metal.
Modern metal detectors work on the similar principle with more electronics added. Now you'll find microprocessors attached inside the box. These microprocessors can indicate the presence of a metal type. It can measure the time between charging of metal and the receiving the beep that concludes the type of metal and this length of time is known as phase shift.
There are adjustments in the device when searching for a particular kind of metal. Some detectors can even tell you on a viewscreen what it is that they found.
Metal detectors have electronic boxes with a battery case on one end and a handle for the operative's arm on the other. It has a coil made of insulated wire wound around a telescoping shaft that is inside a plastic disk. The device is held parallel to the ground due to the angle at which the disk comes out of the shaft. The electronic box is held in the hand, the power is put on and the coil end is slowly swept over the ground.
If the trace of metal is there on or buried in the ground, an electronic beep is heard when the device sweeps the ground.
Working with a metal detector is easy. With just a few hours of training a person can become very good at the skill of properly using a metal detector.
Becoming a treasure hunter, as metal detector enthusiasts like to call themselves, is fairly easy. But it can be a very expensive hobby. Metal detectors can cost between several hundred dollars to several thousand dollars. The best advice that can be given to someone new to treasure hunting is to buy used equipment first. The best time to do this is when new model metal detectors come out. In order to do this you really have to have your timing down. It is not every day that new models come out. But, if your timing is right you can get a substantial discount off the retail price by purchasing an older model.
You could also look for providers of discounted metal detectors. There are many reasons why you might be able to purchase a metal detector at a discounted price while not compromising quality. One of the most prominent reasons for discounted prices is warranty repairs that have been released back onto the market. These are metal detectors that were returned due to a manufacture defect. It has now been fixed and is literally the same as those just out of the box. But, it can’t be sold like new.
Another reason you might be able to purchase a metal detector at a lower than retail price is because it was some how blemished during the manufacture process. These blemishes are all cosmetic and do not affect the operation of the device. So, buying a discounted metal detector is not a bad thing. But, how do you choose which metal detector to buy. When looking to buy a metal detector that is right for you there are a few things you should keep in mind.
First, you need to ask yourself what you will be looking for and where you will be looking for it. There are certain types of metal detectors that are design to look for specific types of metal, like gold. But, the biggest difference here is where you would like to use the metal detector. With metal detectors it is all about terrain. If you buy a metal detector not designed for your terrain, it will work, but not as well as if it was desgined for that specific terrain. For instance you would not want to use a metal detector designed for use under water on the beach nor would you want to use a metal detector designed for use on the beech in hilly terrain.
Another item to consider is the duration, type and expense of the battery used. It could be the best metal detector in the world but if it only lasts for a half hour then it is worthless. Moreover, if you are having to change the batteries all of the time you are going to want to buy a good number of batteries. If those batteries are very expensive then that particular make of metal detector may not be worth it no matter how cheap it is. With batteries you also have to consider availability. So what if the batteries are cheap, if you can not get them where you live or are going they might as well be the expensive type.
Last but not least, you should consider weight and comfort. If the metal detector is too heavy or is uncomfortable to hold you will be less likely to use it. Well at least have fun using it.
Just make your choice wisely. Think about how and where you are going to use your metal detector. Think about how you are going to power it. Then you should be able to make a decent decision about which metal detector to buy.
Both Jessica Deets & John Tasher are contributors for EditorialToday. The above articles have been edited for relevancy and timeliness. All write-ups, reviews, tips and guides published by EditorialToday.com and its partners or affiliates are for informational purposes only. They should not be used for any legal or any other type of advice. We do not endorse any author, contributor, writer or article posted by our team.
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