2018年11月14日 星期三

腳踏車為什麼可以保持直立?


How does a bike stay upright? Surprisingly, it’s all in the mind


Bicyles are not held up by the gyroscopic effect



A Bicycle Can Be Self-Stable Without Gyroscopic or Caster Effects

0 G


Biological Liquid Crystals

https://news.cnrs.fr/articles/natures-liquid-crystals

Johnny Weir - Angular Momentum

Swan Boy

Poker Face

Three failures of classical physics

https://physics.weber.edu/carroll/honors/failures.htm

Ubuntu 18.06 booting stuck

Syndrome: Purple screen -->security mode shows Loading linux 4.15.0-106-generic Loading initial ramdisk Solution: Go to boot manue Securi...