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.

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

Abstract: In this article, a novel optomechanical metasurface for manipulating reflective phase and polarization state of linearly polarized electromagnetic (EM) wave is proposed. The presented MS ...

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

A new collection of research papers examines how humans conceptualize numbers and the numeral systems we’ve build around them ...