English glass maker who developed lead glass, also known as flint glass. For several centuries, Venice had dominated the glass industry; in 1674, however, Ravenscroft discovered that by adding lead, he could create a glass that was not only more durable, but more brilliant and aesthetically pleasing than Venetian glass. Today Ravenscroft's discovery is known as lead crystal.
"George Ravenscroft." Science and Its Times: Understanding the Social Significance of Scientific Discovery. . Encyclopedia.com. (September 24, 2018). http://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/george-ravenscroft
"George Ravenscroft." Science and Its Times: Understanding the Social Significance of Scientific Discovery. . Retrieved September 24, 2018 from Encyclopedia.com: http://www.encyclopedia.com/science/encyclopedias-almanacs-transcripts-and-maps/george-ravenscroft