British parliament enacts the Statute of Westminster , legalizing dominion equality with Britain. Mukden Incident begins Japanese occupation of Manchuria . The planned capital of New Delhi opens in India . Scottsboro trial begins, exposing depth of Southern racism. The Star Spangled Banner officially becomes national anthem.
Double features emerge as a way for the unemployed to occupy time.
Georgia O'Keeffe paints Cow Skull . The Empire State Building is completed. General Motors's Frigidaire makes refrigerators safe for household use. Karl Jansky begins the science of radio astronomy as he observes interference in the form of hissing sounds coming from beyond the earth's atmosphere. Harold Urey discovers heavy water, water that contains deuterium, a rare hydrogen isotope.