Assertion: relay | /r/ObjectUse | used in telephone switching
Facets:
value: according to bancroft gherardi
type: OTHER
Source sentences:
text: Relays were later used in telephone switching and early electronic computers and remained hugely popular until transistors came along in the late 1940s; according to Bancroft Gherardi, marking the 100th anniversary of Henry's work on electromagnetism, there were an estimated 70 million relays in operation in the United States alone by that time.