HTC superconducting quantum interference device (SQUID) applied to detect the 'qigong' signal

The “external gas” emitted by qigong masters were investigated by means of the high critical temperature Superconducting Quantum Interference Device (HTc SQUID) magnetometer, having the highest sensitivity of 1.2 X 10 exp10(- 8) G/Hz exp 10 (1/2).

The investigations lasted for as long as five years. All of the experiments were carried out in a special magnetic shielded room located in a suburb of Beijing. Most of these signals were weak direct or low frequency magnetic field. The highest signal detected reached to the order of 10-5G.