The Seesaw and the Shoes (1945)

NR | May 05, 1945 (US) | Drama, Documentary, History | 00:11

This short shows how two objects led to important discoveries. Children playing with a seesaw inspire French physician Rene Laennec to invent the stethoscope, and a pair of shoes made of caoutchouc lead Charles Goodyear to discover the process for vulcanizing rubber.