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by Gibbon1
2526 days ago
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Lasers were invented in the early 1960's. And there was a bunch of hype for half a decade. Dozen years later people were referring to lasers as a 'failed' technology. Transistors invented more or less in 1947. Twenty years later in 1967 my parents bought a BW TV, with tubes. LED's. First invented in 1927, practical devices 40 years later in the mid 1960's. Widespread use in lighting, not until 40 years after that. |
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