…(1891–1976), German artist. He was a leader of the Dada movement and developed the techniques of collage, photomontage, and frottage. He is probably best known for surrealist paintings such as L’Eléphant de Célèbes (1921)…
…(1858–1947), German theoretical physicist who founded quantum theory, announcing the radiation law named after him in 1900; full name Max Karl Ernst Ludwig Planck. Nobel Prize for Physics (1918)…
