Abstract: A method and apparatus for destroying or retarding growth of malignant cells and tumors using one or more coils of wire, externally applied to the body, for chosen periods, which are connected to an alternating current source to produce a low frequency sinusoidal magnetic field of desired intensity at the irradiated malignant region to be treated.

Abstract: An indoor-outdoor golf practice device for use with all golf club woods, irons and wedges wherein a lightweight practice golf ball is attached with a selectable length cord to a single fold-over, flexible flap. The flap contains one or more small calibration weights at its opening end and covers distance-marker scales, with each scale corresponding to a particular range to be measured. The kinetic energy at a particular point in the flight trajectory of the well-hit light-weight properly positioned practice ball, which simulates a roughly 250 yard drive is sufficient to fully open the fold-over flap with a 10 foot tether cord, thus exposing the high range full scale markers up to 250 yards.