06-05-2006, 05:25 AM
...And I was thinking about various things that teachers tell you that aren't exactly correct.
For instance, I think it was Newton who showed that two cannonballs of different size have the same downward acceleration, disproving an earlier theory that one will fall faster because it is bigger. The earlier theory may have been extrapolated from observing the effect of air on falling objects: lighter (eg. less dense) (and sometimes smaller) objects will fall slower through air.
Some people, and some textbooks, ironically make the same logical mistake: that gravity is the same regardless of the mass of the object in question. This is of course in direct violation of relativity. Objects that are bigger in mass will have higher attraction towards the Earth than smaller objects, but at miniscule ratios this is not visible at all. (In case you would have any doubts about it, think about an object as massive as the Sun attracting the earth. It's gravitational pull towards the earth is much bigger than that of a cannonball)
Now... As I was thinking about this, another thought came up: "the law of universal gravitation" applied to the core of the Earth: the gravitational force between any two objects is their masses multiplied by themselves, multiplied by the gravitational constant, and divided by the square of their distance. (http://en.wikipedia.org/wiki/Law_of_univ...ravitation)
So it is therefore logical that the particle in the gravitational center of the earth has no gravitational forces pulling on it. The particles near it have almost none and so on, until the force starts to decrease due to distance from the center and less change in the cancellation of opposite gravitational forces.
It is then alarming to me that people have assumed that the core of the earth is a superhot heavy solid. Would it not be more logical to predict that it would be a super COLD light GAS instead? That would make all that magma above it actually make a lot more sense...
EDITed.
I'm a genius. :wtnod:
For instance, I think it was Newton who showed that two cannonballs of different size have the same downward acceleration, disproving an earlier theory that one will fall faster because it is bigger. The earlier theory may have been extrapolated from observing the effect of air on falling objects: lighter (eg. less dense) (and sometimes smaller) objects will fall slower through air.
Some people, and some textbooks, ironically make the same logical mistake: that gravity is the same regardless of the mass of the object in question. This is of course in direct violation of relativity. Objects that are bigger in mass will have higher attraction towards the Earth than smaller objects, but at miniscule ratios this is not visible at all. (In case you would have any doubts about it, think about an object as massive as the Sun attracting the earth. It's gravitational pull towards the earth is much bigger than that of a cannonball)
Now... As I was thinking about this, another thought came up: "the law of universal gravitation" applied to the core of the Earth: the gravitational force between any two objects is their masses multiplied by themselves, multiplied by the gravitational constant, and divided by the square of their distance. (http://en.wikipedia.org/wiki/Law_of_univ...ravitation)
So it is therefore logical that the particle in the gravitational center of the earth has no gravitational forces pulling on it. The particles near it have almost none and so on, until the force starts to decrease due to distance from the center and less change in the cancellation of opposite gravitational forces.
It is then alarming to me that people have assumed that the core of the earth is a superhot heavy solid. Would it not be more logical to predict that it would be a super COLD light GAS instead? That would make all that magma above it actually make a lot more sense...
EDITed.
I'm a genius. :wtnod:
Peace cannot be obtained without war. Why? If there is already peace, it is unnecessary for war. If there is no peace, there is already war."
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Visit www.neobasic.net to see rubbish in all its finest.