Robert Grant’s Calcium Lights
Posted by Richard Saylor on May 8, 2015 in | Comments Off on Robert Grant’s Calcium Lights The American Civil War provided opportunities for many Northern inventors to profit. Before the war began inventor Robert Grant of New York City had advocated the use of his calcium lights to illuminate streets. After the war broke out he encouraged their use by Union forces as a way to facilitate night combat by illuminating the enemy’s fortified heights. In 1863 the Union employed two of...read more