Description Magnetic field detector
Electromagnetic fields have surrounded us since the beginning of humanity: Among other things, light is the propagation of an electromagnetic signal. Basically, these fields are not harmful. However, almost every electrical device generates additional electromagnetic fields. If these fields become too strong, they can become dangerous for humans.
To measure the strength of the electromagnetic field in your surroundings, you can use this detector. It indicates the strength of the field using 4 LEDs, with a measurement range from 1 mGauss to 10 mGauss. For comparison: According to the Federal Office for Radiation Protection, a hairdryer generates values of up to 7 mGauss, a television up to 2 mGauss, and a computer should be below 0.01 mGauss. It is not reliable to say exactly where the threshold to dangerous values lies, as there are various studies with very different results. According to the International Radiation Protection Association, it becomes undisputedly dangerous from 100 mGauss in residential areas, but there are studies that indicate a higher probability of leukemia from as low as 2 mGauss.
Physically correct, it should be noted that the device measures the magnetic flux density of magnetic alternating fields (i.e., time-varying fields) in the order of 50Hz. 50Hz is the mains frequency used in Europe and therefore the predominant frequency of fields generated by electrical devices. Static (i.e., time-invariant) electric and magnetic fields, such as those generated by permanent magnets, are not measured. However, these are also harmless.
The measuring device is approximately 16cm long and requires a 9V block battery, which is not included.
