A watch battery, button cell, silver button cell or coin cell is a small battery designed for use in items such as watches, hearing aids, calculators, cameras, pacemakers, digital thermometers, ...

Mercuric Oxide (HgO) is an inorganic compound appearing as a red or yellow crystalline powder. It's highly toxic and historically found use in button batteries (though largely phased out due to ...

MANCHESTER. Literary and Philosophical Society, October 7.—Mr. Charles Bailey, president, in the chair.—A paper was read by Mr. R. L. Taylor on the reaction of iodine with mercuric oxide in presence ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. box: 1 in x 3 3/4 in x 3/4 in; 2.54 ...

American Journal of Science, May.—Observations on the derivation and homologies of some Articulates, by James D. Dana. It is probable that all Articulates are successional to the Rotifers. There is ...