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.
Release date : 1945-05-05
Production country :
United States of America
Production company :
Metro-Goldwyn-Mayer
Durasi : 11 Min.
Popularity : 0
0.00
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