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1950s - Scientists at the Bell laboratories invent and modify transistors for communications in 1950.
UNITED STATES 1940s-1950s : A professor lectures at the head of a classroom, filled with young men.  A young woman enters data onto punch cards using a computer.
UNITED STATES 1940s-1950s : A scientist in a laboratory uses a remote control device to operate machine arms to work with radioactive material behind a glass window.
UNITED STATES 1940s-1950s : A cyclotron in a laboratory. Scientists sit in a small room-- two sit at a table while a third writes on a blackboard.
Usa - 1954 - students attend chemistry, biology and physics classes at carle place high school in new york.
UNITED STATES 1940s-1950s : Two scientists stand over nuclear pile while one detects the radioactivity of the material it produces. The other scientist removes the radioactive material from the pile.
UNITED STATES 1940s-1950s : Two scientists work with a nuclear pile.  Fade to a small desk clock with bright white numbers and dials.

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3480158267

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Stock Video ID: 3480158267

Usa - 1950s - high school chemistry, biology, and physics classes are shown.

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