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For years, a French mathematician searched for a proof that a gigantic number is prime. His method is still used 150 years ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I ...

The longevity of Jobs’s ten-minute design session suggests the approach worked. The calculator survived nearly two decades of ...

The longevity of Jobs’ 10-minute design session suggests the approach worked. The calculator survived nearly two decades of ...

This inflation calculator uses the change in the Consumer Price Index (CPI) from 1913 to 2025 to estimate the U.S. dollar's buying power and future value.

In 1982, a 21-year-old Chris Espinosa faced a familiar challenge in software design: satisfying Steve Jobs’ exacting eye.

Check the currency rates against all the world currencies here. The currency converter below is easy to use and the currency rates are updated frequently. This is very much needed given the extreme ...