Inventions That Shook The World

“The 1900's”

The first decade of the1900s ushers in crucial inventions that will help shape the rest of the century. Communication gets a boost as a voice is transmitted wirelessly by radio for the first time. Shaving gets a new edge with the appearance of the safety razor blade. The first air conditioner takes the misery out of extreme heat and humidity. The vacuum cleaner stops rugs and carpets from taking a beating, and two brothers apply their skills as bicycle mechanics to build and fly the world's first airplane. (1 of 10)

10.1 and 36.2