Wireless power chargers produce relatively high magnetic fields in the near field. The German building biologists Virnich / Moldan investigated in late 2009 mousepads that supplied the overlying computer mouse with electricity. The mouse pad itself was connected by cable and a USB stick to the computer. The measured value was more than 20 micro Tesla (μT) at a distance of five centimeters. For health risk assessment is still required an additional information: while the mains frequency is 50 Hz current of our house, “worked” the mouse pad with a fundamental frequency of 122.7 kHz. In addition, the power generated mat harmonics up to 10 MHz. Continue reading →