We measure the “warmness” of the dark matter, i.e. the comoving root-mean-square thermal velocity v hrms (1) , with nearly 3000 spiral galaxy rotation curves in the ...

Although the effects of a bullet's terminal performance had been thoroughly studied by 1955, ammunition pioneer Roy Weatherby sought to prove velocity trumps mass and, as a result, built a reputable ...

Machine learning models are designed to take in data, to find patterns or relationships within those data, and to use what ...

This engineering exam, which is a gateway to some of the premium engineering colleges such as IITs, NITs and more, cover ...

Right-handed relievers averaged 96.2 mph with their four-seam fastballs through the World Series opener, an increase from ...

Abstract: Since vision-based sensors typically cannot directly measure the relative linear and angular velocities between two spacecraft, it is useful to develop attitude- and position-tracking ...

Contributed by John A. Rogers, September 10, 2018 (sent for review August 21, 2018; reviewed by Markus J. Buehler and Pradeep Sharma) ...

Deep in the core of most galaxies, hidden by spinning clouds of gas and dust, black holes spin like cosmic engines. These giants — some are billions of times heavier than our sun — can shoot out ...

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 ...

Abstract: In this paper, a fault-tolerant control scheme is proposed for the rigid spacecraft attitude control system subject to external disturbances, multiple system uncertainties, and actuator ...