Light is usually described using quantum mechanics when phenomena like entanglement enter the picture. But a new paper shows ...

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 ...

Sacramento County, California, vote-by-mail envelopes were designed with holes punched into either side of the envelopes’ signature section. The holes’ purpose is to indicate to low-vision voters ...

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 ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Daniel Liberto is a journalist with over 10 years of experience working with publications such as the Financial Times, The Independent, and Investors Chronicle. Robert Kelly is managing director of ...

Nearly a quarter-century after the Senate refused to open the infamous “second envelope” in former president Joseph Estrada’s impeachment trial—triggering public outrage and the Edsa II ...

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 ...