Alexander Nicholas invented the first oscillator in 1917 in Bell Labs. Solid materials can produce electricity when squeezed. Also, it works in reverse. It is used in a lot of radio stations, one by 1920. They made their way into clocks. Wristwatch appeared in 1969. It gave rise to "clock wars" in the 1990s.
George Washington Carver was born in the 1860s. He became a Christian as a boy and learned to give back to others. He earned a college education. He went to work for Booker T. Washington. Mostly known for his farming techniques. He promoted peanut recipes and became known as the "Peanut Man". Became famous for work with peanuts. He died at age 80.
Hidetugu Yagi researched radio waves. He invented the Yagi Uda antenna in 1926. Yagi Uda increases directivity. He published an English article in 1928. Used extensively during WWII. Still popular antennas. Helped increase TV use. Led to able TV.
People used to die of infection. Soilders in wars mostly died from infection. Alexander Fleming was born in Scotland in 1881. He studied under a vaccine professor. He saw hundreds of soldiers die during World War 1. He studied bacteria for the next 14 years. He invented Penicillin in 1929. It is grown in large tanks. 13 years would pass until the first patient was saved. Hard to grow, exited body quickly. We don't have to worry about infections today. Must be careful not to over use it.
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