What animal invented the life detector?
That is to say, the principle of the life detector is the application of electromagnetic wave. The principle of radar is the same as that of radar. The invention of life detector is related to the development of physics, and it is not related to biology
A life detector is designed to locate the human body by sensing the electric field generated by the body's ultra low frequency waves (produced by the heart). Equipped with a special radio frequency filter can be different from other animal, human beings such as dogs and cats, cattle, horses, pigs to filtration, electric field makes the life detector will only feel a human generated frequency
