Inventions That Shook The World

“The 1920's”

Mobsters, jazz, and turbulent economic times mark the 1920s. Silent film makes the transition to the talkies as sound comes to the silver screen. The refrigerator gets a makeover from the smartest man in the world; and, poverty inspires a desperate inventor to come up with a winner called television. Criminals find there's one less place to hide with the invention of the lie detector; and, the space age is launched when a rocketeer who refuses to give up finally unlocks the secret of liquid fuel. (3 of 10)

10.1 and 36.2