Understand unit vectors in cylindrical and spherical coordinate systems with a simple and intuitive explanation. This video breaks down how these vectors define direction in three-dimensional space ...

Abstract: Measurement of the frequency response of sensors and devices with high-frequency resolution and sensitivity is of great importance for high-sensitive trace gas detection, high-quality ...

The United Nations rarely moves fast on disarmament. This year, though, it did something unusual. On November 6, the General Assembly’s First Committee, where states debate over questions of ...

Across nearly four decades as a teacher, principal, superintendent, funder, and now leader of a large education nonprofit organization, the experience that most shaped my view of learning wasn’t a ...

In 1924, the Soviet Union under Joseph Stalin unleashed its divide-and-rule policy to ethnically divide the Fergana Valley among the Uzbek Socialist Soviet Republic and the Kara-Kirgiz Autonomous ...

ABSTRACT: The purpose of this work is to study the nonlinear propagation of coupled pulses within birefringent optical fibers. To achieve this, an effective analytical technique using iB-function was ...

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 ...

We learn something new every day. And often, it's not textbooks but experience that turns out to be the best teacher. Some of the most important life lessons come when we least expect them. Wrapped up ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...