主题:美国求学执教的见闻和感受(0) -- changshou
this is a very important topic, worth tons of writings, discussions, because 爱因斯坦 SR, GR all started somehow with 惯性 concept.
爱因斯坦:“惯性原理的弱点在于它含有循环论证:如果一个质量离开其它物体足够遥远,它就作没有加速度的运动;而我们却又只能根据它运动时没有加速度的事实才知道它离其它物体足够遥远。”
基本物理应用 (or intuition/ common sense etc)概念 such as 惯性 are extremely important to almost everybody, such as 黎曼幾何's roots in 测量, actually all those physics/math masters all have written some kind of applications in some 基本物理应用 area;
that is one of reasons I like "witten1" etc folks postings very much, math without 物理 are not really "useful" for us application developers, although formality/concept brainstorming/解放思想 is absolutely a must in today's SR, GR world, but for app developers, you have to 实事求是, making money as well while 解放思想;
by the way, the greatest 爱因斯坦 the greatest brain power=plain logic+ 物理 intuition + learning whatever math he needs=the greatest (理论物理学家+实验物理学家+technologist)
about US: one of the issue is: usa is already at top of 解放思想, kind of topped out in a way;
china is the opposite: still bottoming around in the 解放思想 process, it has a lot of potential as a nation once its political top allows the people to 解放思想;
An famous American (forgot the name) once said something: don't worry about Chinese coping of anything from USA, as long as they don't copy US 解放思想 concept & its system;
I would think a lot of us would be amazed by US supreme court's approval of Obama care & gay lesbian marriage;
US political system as stupid as it looks sometimes, 大事不糊涂?
- 相关回复 上下关系8
压缩 15 层
🙂极小的力当然应该能给宇宙加速度,看你坐标系选哪 三力思 字213 2013-06-27 11:11:40
🙂都被你带的坑里了。 山海马甲 字207 2013-06-27 11:18:53
🙂你把座标系勾在蓝球上 1 三力思 字354 2013-06-27 12:38:39
🙂"宇宙也不会因为蓝球坐标系在地面来回反弹引起星系震荡"
🙂老兄的文字相当不严谨啊,但牛顿定律不符合正是我想说明的 3 山海马甲 字2774 2013-07-01 00:19:26
🙂"坐标系不是物体,其是没有什么加速度的", thx 晓兵 字589 2013-07-01 15:02:56
🙂引力场量子化, still a day dream 晓兵 字582 2013-07-01 20:05:04
🙂local, 加速度=引力 晓兵 字915 2013-07-01 15:15:52