What he did was took de Broglie motion of the electron as a wave and developed a wave equation for such matter waves.
他所做的就是,用电子的德布罗意运动,作为波并且对于那种物质波,给出波动方程。
What I did last time was to show you how to handle motion in more than one dimension.
上节课的内容,是用多维矢量描述运动
And So, people study brain damages— brain damage that implicates motor control such as apraxia.
所以人们研究脑损伤,这些脑损伤能够引起,诸如失用症这样的运动控制障碍
So, I'm going to illustrate the idea of kinematics by taking the simplest possible example.
所以我会用很简单的例子,来解释运动学
The way the physics works is you will find some laws of motion in mathematical form, you put in the initial conditions of whatever, you solve the equations, and the answer that comes, you have no choice.
在物理问题中,你可以用数学方法得到运动定律,你代入初始条件,然后解方程,获得答案,你别无选择
So what I've said so far is, a particle moving in time from point to point can be represented by a graph, x versus t.
到目前为止,我说过,一个质点随时间的连续运动,可以用一幅x-t图来表示
For example, suppose you use vertical motion and you use y instead of x; and a would be g or -g; that's a particle falling down under the affect of gravity.
例如,假设在竖直运动中,你用 y 来代替 x,那么 a 就是 g 或者 -g,这就是一个受重力作用下落的质点
应用推荐