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Scientific American, Vol. 97, No. 10 (September 1907) (1907)

leaf 3

An illustration from Scientific American, Vol. 97, No. 10 (September 1907), 1907, leaf 3
rely sides its employment as a timekeeper, is for elec- tion of time as the 1-1,000 part of a second should be on what has been aptly termed "descriptive psychol- trically measuring any interval of time in thousandths made, and this can be accomplished by the chrono- ogy"; yet in the past few years… … of the conical norance that Chronoscope Forming Part of the Wells Apparatus. pendulum characteri zed is confined in the observa- true circles by tional meta- a magnetic physics of old control- have been ler, thereby thrust aside eliminating the and superseded earth's rota- by s c i e n t ific…

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