Abstract: A mattress utilizing carbon nanotube alone or in combination with fibrous material in the form of a textile. The textile having semi conductive properties to allow for grounded ion exchange to improve electromagnetic hygiene, detect biological processes, and/or evaluate a health condition.

Abstract: A personal electromagnetic hygiene sleep system for calibrating a human to a baseline bio-electric homeostasis with the human and the environment via stimulus-responsive and performance textiles. These textiles possessing tested and theoretical benefits to the human organism such as: Harnessing the Earth's electrically negative potential via the Earth's mobile and free electrons to be an agent that assist in canceling, reducing, or pushing away electric fields from the body as well as serving to help attenuate oxidative stress and damage to the body from positively charged Reactive Oxygen Species (Free Radicals). Conference of these benefits are effected via a person being in direct or field contact with certain stimulus-responsive performance textiles and a plurality of adjacent conductive fibers for the transport of free electrons to the body from a greater electrically negative potential, an electrical ground, via the ground potential in a standard wall outlet. All superimposed upon a mattress.

Abstract: A personal electromagnetic hygiene sleep system for calibrating a human to a baseline bio-electric homeostasis with the human and the environment via stimulus-responsive and performance textiles. These textiles possessing tested and theoretical benefits to the human organism such as: Harnessing the Earth's electrically negative potential via the Earth's mobile and free electrons to be an agent that assist in canceling, reducing, or pushing away electric fields from the body as well as serving to help attenuate oxidative stress and damage to the body from positively charged Reactive Oxygen Species (Free Radicals). Conference of these benefits are effected via a person being in direct or field contact with certain stimulus-responsive performance textiles and a plurality of adjacent conductive fibers for the transport of free electrons to the body from a greater electrically negative potential, an electrical ground, via the ground potential in a standard wall outlet. All superimposed upon a mattress.

Abstract: An arrangement to determine whether a tennis ball is "in" or "out" on a playing surface, which includes both a transmit coil and a receive coil beneath the playing surface and a modified tennis ball to have a non-zero magnetic permeability, so that an alternating signal can be transmitted from the transmit coil and re-radiated from the tennis ball, which can then be detected by the receive coils, and can be synchronously demodulated and resistive and reactive components of the signal analysed to discriminate the ball from other influences. The receive coils can be wound to avoid electro-magnetic interference from far fields.

Abstract: An animal can be immobilized by passing a pulsed electric current through the animal's muscles to cause a state of tetany in the muscles while leaving the organs in a relaxed condition.