Page 1 Page 2 Page 3 Page 4 Kinetics velocity: $\mathbf{v}=\frac{d\mathbf{r}}{dt}=r'_x \mathbf{i}+r'_y \mathbf{j}+r'_z \mathbf{k}$ acceleration: $\mathbf{a}=\frac{d\mathbf{v}}{dt}=v'_x \mathbf{i}+v'_y \mathbf{j}+v'_z \mathbf{k}$ motion…
In mechanics, switching reference frames is a prevalent way to simplify questions, as long as it becomes easier. Centre-of-momentum reference frame,…
We have discovered how gravitational fields work and some facts about them, today we continue to expand the theories that…
Initially, Gauss investigated the pattern of gravity and developed "Gauss' law for gravity" but unexpectedly it turned out to be…
這是你的第一篇文章。編輯或刪除它，然後開始寫網誌吧！ $ \textrm{Maxwell's equations} \\\nabla \cdot \mathbf{D}=\rho _f \, \small (\textrm{Gauss' law}) \\ \nabla \cdot \mathbf{B}=0 \, \small (\textrm{Gauss' law})\\…