| nobody is perfect -
03-20-2007, 12:33 PM
Lasting perfection is something to strive for but never completely attained. In this context, it is achieving perfect rest or motionlessness. Without any help from the principle of relativity who can say that perfect rest is possible?
On the other hand, with help from relativity only inertial frames of reference could be at rest. Moreover, certain frames are allowed uniform motion with respect to others. In this second context, perfection means uniform constant speed and keeping the same direction. Constant speeds in 3D space are constant time derivative of distances. However, constant direction is only possible for time, say, from past to present to the future. It is true that even muons at .9994 speed of light live longer by a factor of 30 their direction in time is the same before, now, and after. The existence of fundamental forces does not allow constant direction in 3D space. This is true even in quantum mechanics with its different quantized spin directions.
In human context, a perfect person with perfect body, perfect memory, perfect vision, perfect hearing, perfect smell, and perfect sense would only last as long as that person’s life expectancy, give or take a hundred years.
In the universal context, it is perfectly logical to say that the universe is perfectly at rest. This is the same as saying that its total linear momentum is exactly zero.
Time independence: [∂E(g)]²=[∂F(a)×∂r(a)]·[∂F(b)×∂r(b)] and Mass independence: ¶a(t)·¶r(t)=c²
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