IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Thomas C. Mendenhall, who became ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

THE following very simple apparatus may I think be of use in any laboratory or other place where at times it is necessary to have a pendulum beating seconds in order to give the time for any ...

IN that early apparatus I recently described, you will remember that the balance, after being set swinging in one direction, had its motion completely destroyed, and was then set swinging in the other ...