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نیروی الکترومغناطیسی - نیروی الکترومغناطیس
On the surfaces of planets, chemicals clumped together under the influence of electromagnetic forces into smaller and then larger molecules, until at last molecules that could replicate themselves appeared, and biology began.
Example 4: The Strength of the Electromagnetic Force
The intrinsic strength of the electromagnetic force is controlled by a parame- ter in the laws of physics called "the fine structure constant."
In other words, the electromagnetic force is intrinsically about one-hundred times weaker than the strong nuclear force.
If the electromagnetic force were of different strength it would change the number of elements that could exist in nature, and there- fore the kind of chemistry that could take place.
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