Explore how envelopes in technical analysis help traders identify overbought and oversold conditions through upper and lower ...

Understand Thevenin’s Theorem the easy way with a clear, step-by-step circuit example. Learn how to simplify complex electrical networks into an equivalent circuit, making analysis faster and ...

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 ...

That's the message delivered Friday to a nation on tenterhooks, sealed for nearly a century inside an envelope thought to carry its founding father's final words. The words of Tomáš Garrigue Masaryk — ...

In reading the various newsletters and calendars published by the Smithsonian, I have decided that the Institution is rather like Cairo: you can find just about anything here. I see that one Maynard ...

Emmy Noether showed that fundamental physical laws are just a consequence of simple symmetries. A century later, her insights continue to shape physics. In the fall of 1915, the foundations of physics ...

The days of getting important documents in the mail instead of a PDF may be waning, but there’s still plenty of mileage left in the Manila envelope. The oversized, heavy-duty enclosures can send and ...

Abstract: To any (oo-)category equipped with an exact structure, there exists an initial stable oo-category Stab(E) receiving an exact functor from E. If E is a 1-category, this is its bounded derived ...

Calcea Johnson and Ne'Kiya Jackson, who surprised the math world when they produced innovative solutions to a 2,000-year-old puzzle, wowed the math world again when they presented several new ways of ...

In their peer-reviewed work, Calcea Johnson and Ne'Kiya Jackson present five new ways of proving Pythagoras' Theorem via trigonometry. They also detail a new method for finding proofs that yield at ...

Two years ago, a couple of high school classmates each composed a mathematical marvel, a trigonometric proof of the Pythagorean theorem. Now, they’re unveiling 10 more. For over 2,000 years, such ...