who invented lithography and what was its original purpose
Lithography Lithography (from Ancient Greek λίθος, lithos, meaning 'stone', and γράφειν, graphein, meaning 'to write') is a method of printing originally based on the immiscibility of oil and water.[1] The printing is from a stone (lithographic limestone) or a metal plate with a ball grained surface. It was invented in 1796 by German author and actor Alois Senefelder as a cheap method of publishing theatrical works.[2][3] Lithography can be used to print text or artwork onto paper or other suitable material.[4]