We inaugurate another new section, that of the useless app of the week. And as its name suggests, we are going to focus on those applications that become completely useless apps. This week we talk about Metal detector. And it is that, although it seems a lie that you can detect metals with your Android smartphone, the truth is that it is possible.
It seems a lie, right? It seems incredible that most Android smartphones have a magnetometer, which measures the electromagnetic radiation that is around. As many of you know, any metal creates a magnetic field that can be easily recognized by our Android devices. The Metal Detector application uses this to measure the intensity of the magnetic fields that it detects around it, so that we can locate metals.
This would be great if not for a single detail. And it is that if the metal is very far away, it will never be able to detect its magnetic field, so in the end it is useless as a metal detector. However, it is very useful to understand how the smartphone's magnetometer works, and to measure the intensity of electromagnetic fields from metals.
If you don't think it can really work, download the application and try to bring your smartphone closer to your speakers, or to your computer. Since speakers contain magnets, they create high-intensity magnetic fields that we can easily recognize with our smartphone, although those with a magnetic shield may not be easily recognizable. However, we will most likely have no problems with most metals. Metal detector It is a somewhat stupid application, because it becomes totally useless at the end of the day, but it is never bad to check that, in fact, it really works and is not a lie.
Google Play - Metal detector