Boys' own book : a complete encyclopedia of athletic, scientific, outdoor, and indoor sports (1881)
Clarke, William, 1800-1838 · New York : J. Miller, Publisher · leaf 387
ght e o, and infalling wiU describe the arc o b ;and, in the point b, it will havethat velocity which is acquiredby descending through o b, orby a body falling freely through the perpendicular o e. Thisvelocity wiH be sufBcient to cause it to ascend through anequal arc b d, to the same height from… … * This discovery was published at Paris, in a treatise called X Usage dvCadran, on de VHorloge Physique TTrviverselle, in the year 1639; froFwhich may be dated the invention of the pendulum. t Compounded of the Greeks words laos, equal, and xp^^ou time. MADE SCIENCE IN EARNEST. 1^7 by its own…
Amusements · Games · Sports
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