Using electrochemical impedance spectroscopy (EIS) techniques to help obtain battery working conditions like SOH and SOC.

If you're planning to increase your electrical load by adding a new major appliance, make sure your panel can handle it. Here's how.

Two mathematicians have proved that a straightforward question — how hard is it to untie a knot? — has a complicated answer.

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 ...

A step-by-step guide for applying an old DI that used simple circuits for PWM programming of standard bucking-type regulator ...

Lyft's revenue grew to $5.8 billion in 2024, marking significant financial growth. The company has shifted focus to exploit strategic opportunities such as partnerships and ads. Lyft doesn't pay ...

A U.S. flag, a passport and a U.S. H-1B Visa application form are seen in this illustration taken, September 22, 2025. REUTERS/Dado Ruvic/Illustration President Donald Trump's order imposing a ...

Occasionally a design requires capacitors that are much closer to being identical in value to one another than the usual ...

The Rasmussen Reports daily Presidential Tracking Poll for Monday shows that 50% of Likely U.S. Voters approve of President Trump’s job performance. Forty-eight percent (48%) disapprove. The latest ...