There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and Technology (NIST) have improved their atomic clock based on a trapped ...

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 ...

Why are we asking for donations? Why are we asking for donations? This site is free thanks to our community of supporters. Voluntary donations from readers like you keep our news accessible for ...

You can create a release to package software, along with release notes and links to binary files, for other people to use. Learn more about releases in our docs.

Abstract: This paper addresses the attitude tracking control problem of liquid-filled spacecraft in the presence of angular velocity constraints and limited control torque. Significant challenges ...

A new app called Death Clock predicts the date of its users’ deaths and offers tips on how to push that date back. Naturally, I had to try it myself. The questionnaire started with basics like age and ...

1 Laboratoire de Physique et de Chimie de l’Environnement (LPCE), Université Joseph KI-ZERBO, Ouagadougou, Burkina Faso. Explosive blasting is commonly practiced at the initial stages of the ...

Three years ago, I published a blog post saying, “Today, there are calls for keeping Daylight Saving Time throughout the year.” Much of that opinion came from worries that tinkering with time has ...

Abstract: Aiming at the spacecraft attitude tracking control with angular velocity sensor failure, a new fixed-time control method is proposed considering the disturbance and parameter uncertainty of ...