Wright, Mark R., 1854- · London : Longmans · leaf 70
ABeOeFOHIbKLMMOPaRB … Fig. 46. If the particle a in line a, be represented at 4 in its circle,then the particle in b being rV of ^ second behind will be al3 in its circle—^that is, it appears on the line b at b, and soon ior c, d,e,f,g.... Join these particles, and the thickginuous curve is formed ; call this the first…
Physics
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