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In a decade dominated by the Great Depression, the inventors of the 1930s were desperately trying to make a living. They come up with some simple yet ingenious inventions that are still practical necessities in our fast-paced life. Featured inventions include: the helicopter, xerography, the parking meter, the walkie talkie, and the electric guitar.
(Source: DCMP)
Adabot and Minerva are having difficulty talking with one another over the walkie-talkies. There is too much "noise." Minerva helps Adabot understand the phenomena of electrical noise. Part of the "Circuit Playground" series.
