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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 ...

The Gordon model allows for the fact that the market might put a price on a stock that's different from what you might estimate using the equation above. A higher stock price than predicted implies a ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

I created a rudimentary calculator using only marbles. Watch as I demonstrate its functionality and explore the concept.

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

And why letting people come up with their own ideas, and actually try those ideas, is almost always the best approach.

Apple co-founder Steve Jobs was infamous for his harsh critiques of the work of his team. Hardware or software, ...

A good budget helps you reach your spending and savings goals. Work out your proposed household budget by inputting your sources of income and projected expenses into Kiplinger's worksheet below. You ...

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 ...