0 Which physicist proposed the uncertainty principle in 1927? Albert Einstein Max Planck Werner Heisenberg Niels Bohr Play Now More questions Which U.S. president announced the Truman Doctrine in 1947? Play Now Which 1954 battle marked the end of French colonial rule in Indochina? Play Now Enter your email to see the answer! By subscribing to TriviaTalent you are agreeing to our Privacy Policy and Terms of Use. See Results
