Category Archives: This Day in History

On this day in 1983

  It’s 1983 and the CD has arrived! Say goodbye to that scratchy vinyl forever.

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Plutonium, the first synthetic element to be seen by man

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On this day in 1941, Glenn Seaborg and his team discovered element 94, plutonium, at the University of California, Berkeley. “It was the first synthetic element to be seen by man,” Seaborg wrote in 1981, and “the first realization of … Continue reading

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This Day in History – Superconductivity

On this day in 1911 Heike Kamerlingh Onnes dipped a wire made of solid mercury into liquid helium and lowered the temperature. At 4.2 K, the wire’s electrical resistance suddenly vanished. Onnes wrote in his lab book: “Mercury has passed … Continue reading

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This Day in History – October 30th

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I Have a Dream

I Have a Dream Speech Martin Luther King’s Address at March on Washington August 28, 1963. Washington, D.C. When we let freedom ring, when we let it ring from every village and every hamlet, from every state and every city, … Continue reading

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The Ballpoint Pen Turns 75 Years Old Today

You’ve probably never used a fountain pen, or accidentally spilled a jar of refill ink and ruined your favorite pants. And for that, you have the ballpoint pen to thank. The handy gadget is having its 75th birthday today, so … Continue reading

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This Day in History – Construction starts on Brooklyn Bridge

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The Brooklyn Bridge was initially designed by German immigrant John Augustus Roebling, who had previously designed and constructed shorter suspension bridges. While conducting surveys for the bridge project, Roebling sustained a crush injury to his foot when a ferry pinned it against … Continue reading

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This Day in History

 

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This Day in History

 

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