Page:Popular Science Monthly Volume 78.djvu/198

194 the one when there was no magnetic force; the path, to begin with, is flatter though still concave, and the carry is greater than before—see Fig. 17, a. I now increase the strength of the magnetic field, and you will see that the carry is still further increased. Fig. 17, b. I increase the spin still further, and the initial path becomes convex instead of

concave, with a still further increase in carry. Fig. 18. Increasing the force still more, you see the particle soars to a great height, then comes suddenly down, the carry now being less than in the previous case (Fig. 19). This is still a familiar type of the path of the golf ball. I now increase the magnetic force still further, and now we get a type

of flight not to my knowledge ever observed in a golf ball, but which would be produced if we could put on more spin than we are able to do at present. You see there is a kink in the curve, and at one part of the path the particle is actually traveling backwards (Fig. 20). Increasing the magnetic force I get more kinks, and we have a type

of drive which we have to leave to future generations of golfers to realize (Fig. 21).

By increasing the strength of the magnetic field I can make the curvature so great that the particles fly back behind the tee, as in Fig. 22.