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THE POPULAR SCIENCE MONTHLY 



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 



Fig. 20. 



Fig 



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 hav a tjrpe 



Fig. 22. 



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. 



