Who Invented Light Bulb And When

Thomas Alva Edison Invented Light Bulb Light Bulb was invented in 1879 Light Bulb is a glass bulb inserted into a lamp or a socket in a ceiling, which provides light by passing an electric current through a filament or a pocket of inert gas.

Who Invented X Factor And When

Simon Phillip Cowell Invented X Factor. X Factor was Invented in 2004 by Simon Cowell, and has since aired annually from August/September until December. The X Factor is a television music competition franchise created by British producerSimon Cowell and his company SYCOtv.

Who Invented L’hopital’s Rule And When

Guillaume Invented L’hopital’s Rule L’hopital’s Rule was invented in 1694 L’hopital’s Rule is used to evaluate indeterminate forms of limits. It states that for indeterminate functions/forms (forms where the limits tend to 0/0 or +− ∞/∞), the limit of that form equals the limit of its derivatives.