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地心引力 = 磁力?
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牛顿万有引力说两个有质量(mass)的物体会互相吸引对方。
虽然说“地心引力”拉着我们,让我们不至于“浮”在空中,不过这“引力”究竟是用什么来“拉”我们?用无形的力吗?
我觉得是“磁力”在拉着我们。因为地球中心有磁场,人类体内有proton 和 electron . 所以就是体内的 proton 和 electron 被地球中心磁场“拉”着。
以上是我个人看法,没代表任何立场。那么你们又有何看法呢? |
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发表于 21-10-2006 05:17 PM
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楼主 |
发表于 21-10-2006 06:17 PM
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原帖由 kensai 于 21-10-2006 05:17 PM 发表
这个问题到现在还是没有一个科学家能回答你
当年爱因斯坦晚年时就是在研究者样东西.
他想把4个 fundamental forces unified 起来变成一种force,
但是他做不出
4个fundamental/element force
gravi ...
原来爱因斯坦曾想过把他们和在一起。如果假设“gravitation force”更本就不存在,存在的只是electromagnetic force 的话,那么要把他们和在一起也就不能成立了
如果假设成立的话,岂不是只要人类能改变体内的磁性就可以有“浮”的能力了,也就是所谓的“反重力”吗? |
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发表于 24-10-2006 01:30 AM
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electromagnetic force = F = ma = E
這是最近用到的﹐因為習題主要是問一滴水在兩個 PLATE 之間有磁場力作用時為何不會偏折。
然後就要用這個公式了。 |
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发表于 24-10-2006 09:54 PM
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引力的理论基本上不是个好理论。因为引力的理论在很多例子上出现冲突。
所以,基本上如果有更好的理论,地心引力的原理就不会再被使用。
广义相对论就是个比地心引力更好的理论了。因为它更能准确的计算行星和恒星之间的运行。 |
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发表于 25-10-2006 12:53 PM
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磁場會有南北極,地心引力沒有。
磁場會排拆,地心引力不會。
磁波伴隨著電波,地心引力則沒有。
磁鐵小至鼻屎那麼小你也可以感覺得到,但地心引力不能。
你說呢?你是 Magneto? |
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发表于 31-10-2006 04:26 PM
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物质把它周围空间曲折就造成了重力.试想相在一块平面的布中放一个重量,那重量会造成它周围的布向下陷.当有其它的物质掉进这弯曲了的空间时,就会跟据它当时的时速而有两个状况发生,一是跟中心物质相撞,二是被俘虏而成为卫星. |
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发表于 31-10-2006 07:58 PM
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原帖由 kensai 于 21-10-2006 05:17 PM 发表
这个问题到现在还是没有一个科学家能回答你
当年爱因斯坦晚年时就是在研究者样东西.
他想把4个 fundamental forces unified 起来变成一种force,
但是他做不出
4个fundamental/element force
gravi ...
我学校f6上的课只有提到的 fundamental forces
怎么样证明现在已经unified了???
回归主题,那两种forces就是不同的东西咯? |
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发表于 1-11-2006 03:56 PM
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原帖由 (^.^) 于 31-10-2006 07:58 PM 发表
我学校f6上的课只有提到的 fundamental forces
怎么样证明现在已经unified了???
回归主题,那两种forces就是不同的东西咯?
还不能真正的unify起来.
所謂大統一理論,是试图把物理上四個基本的作用力統合起,用同样的觀點/理论来解释所有的物理现象.這四個力就,重力,電磁力,原子內的強作用力/弱作用力.除了重力场,其它的力都能整合在一起了.
不过有些新的学说看起来很有潜能能做到,如超絃论里的多重空间就能解释到重力和其它的力.
[ 本帖最后由 chtan69 于 1-11-2006 04:05 PM 编辑 ] |
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发表于 1-11-2006 05:02 PM
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发表于 1-11-2006 05:18 PM
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Electro-magnetic, strong, weak force 都被unify了,现在只剩重力还不能成功因为都找不到force carrier,graviton.
[ 本帖最后由 chtan69 于 1-11-2006 05:25 PM 编辑 ] |
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发表于 1-11-2006 05:47 PM
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Grand Unified theory(strong +electric+weak) 都还没有被证实
但是electroweak force 已经被证实了 1960
* electricity + magnetism = electromagnetism (due to Maxwell (1860s))
* electromagnetism + weak interaction = electroweak interaction (due to Glashow, Salam and Weinberg (1960s))
* electroweak interaction + strong interaction = grand unified theory (none yet verified)
* grand unified theory + general relativity = unified field theory (none yet known)
参考
http://en.wikipedia.org/wiki/Unified_field_theory
http://csep10.phys.utk.edu/astr162/lect/cosmology/forces.html |
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发表于 2-11-2006 08:58 AM
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我就把要文直接copy 上来好了.
Unification of the Forces of Nature
Although the above discussion indicates that the fundamental forces in our present Universe are distinct and have very different characteristics, the current thinking in theoretical physics is that this was not always so. There is a rather strong belief (although it is yet to be confirmed experimentally) that in the very early Universe when temperatures were very high compared with today, the weak, electromagnetic, and strong forces were unified into a single force. Only when the temperature dropped did these forces separate from each other, with the strong force separating first and then at a still lower temperature the electromagnetic and weak forces separating to leave us with the 4 distinct forces that we see in our present Universe. The process of the forces separating from each other is called spontaneous symmetry breaking.
There is further speculation, which is even less firm than that above, that at even higher temperatures (the Planck Scale) all four forces were unified into a single force. Then, as the temperature dropped, gravitation separated first and then the other 3 forces separated as described above. The time and temperature scales for this proposed sequential loss of unification are illustrated in the following table.
Loss of Unity in the Forces of Nature
Characterization Forces Unified Time Since Beginning Temperature (GeV)*
All 4 forces unified Gravity,Strong, Electromagnetic, Weak ~0 ~infinite
Gravity separates (Planck Scale)Strong, Electromagnetic, Weak 10-43 s 1019
Strong force separates (GUTs Scale) Electromagnetic, Weak 10-35 s 1014
Split of weak and electromagnetic forces None 10-11 s 100
Present Universe None 1010 y 10-12
*Temperature Conversion: 1 GeV = 1.2 x 1013 K
Theories that postulate the unification of the strong, weak, and electromagnetic forces are called Grand Unified Theories (often known by the acronym GUTs). Theories that add gravity to the mix and try to unify all four fundamental forces into a single force are called Superunified Theories. The theory that describes the unified electromagnetic and weak interactions is called the Standard Electroweak Theory, or sometimes just the Standard Model.Text
Grand Unified and Superunified Theories remain theoretical speculations that are as yet unproven, but there is strong experimental evidence for the unification of the electromagnetic and weak interactions in the Standard Electroweak Theory. Furthermore, although GUTs are not proven experimentally, there is strong circumstantial evidence to suggest that a theory at least like a Grand Unified Theory is required to make sense of the Universe.
原文摘自:http://csep10.phys.utk.edu/astr162/lect/cosmology/forces.html |
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发表于 6-4-2007 12:26 PM
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原帖由 dunwan2tellu 于 21-10-2006 06:17 PM 发表
原来爱因斯坦曾想过把他们和在一起。如果假设“gravitation force”更本就不存在,存在的只是electromagnetic force 的话,那么要把他们和在一起也就不能成立了
如果假设成立的话,岂不是只要人类能改变体内的磁性就可以有“浮”的能力了,也就是所谓的“反重力”吗?
瑜伽 Yoga种类繁多,一般我们看到哪来“商业化”的是健康瑜伽。
其实瑜伽也有禅类的,就是提升精神者,人体通过禅定冥想(观想)的方式不断练习,达到反地心作用。
磁·在气功或者其他类似"观想"方式的精神练习,她均为---能量。 |
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发表于 8-4-2007 05:38 PM
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原帖由 chtan69 于 1-11-2006 05:18 PM 发表
Electro-magnetic, strong, weak force 都被unify了,现在只剩重力还不能成功因为都找不到force carrier,graviton.
是誰把它們unify起來的?他們拿了諾貝爾獎了嗎? |
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发表于 8-4-2007 10:57 PM
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请问, 如果我们有一个磁力非常强大的磁铁 (ring shape )
再把随便一样东西(水) 放进这ring 中间 ,会发生什么事? |
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发表于 9-4-2007 01:03 AM
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发表于 11-4-2007 06:01 PM
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原帖由 dunwan2tellu 于 21-10-2006 01:48 PM 发表
牛顿万有引力说两个有质量(mass)的物体会互相吸引对方。
虽然说“地心引力”拉着我们,让我们不至于“浮”在空中,不过这“引力”究竟是用什么来“拉”我们?用无形的力吗?
我觉得是“磁力”在拉着我们。 ...
那么大的磁铁,所有的铁不就给地球吸着拿不起来了??? |
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发表于 12-4-2007 01:06 PM
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重力和磁力的方程原理一样, 只是目前还是两个不同的东西.... |
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发表于 14-4-2007 09:15 PM
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原帖由 chunyuen1986 于 11-4-2007 06:01 PM 发表
那么大的磁铁,所有的铁不就给地球吸着拿不起来了???
但是地球真的是个磁铁啊。
地理北极,是这磁铁的南极。
地理南极,是这磁铁的北极。
不然指南针怎样操作的? |
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