138 



EXPERIMENTS ON CENTRIFUGAL FORCE. 



the axis round which it rotates; and if this axis is ve 

 tical, centrifugal force will tend to increase the breadt 

 of the body; in the case of a sphere the tendency wil 





FIG. 99 (an. proj. : A % real size ; B real size). 



be to make it more or less flat. The figure of the eartl 

 is that of such a flattened sphere ; accurate measure 

 ments have shown the length of a straight line draw; 



