Posted by MarkB_MI on August 09, 2008 at 18:20:57 from (216.234.126.22):
In Reply to: gravity posted by ken in texas on August 09, 2008 at 16:24:28:
The reason the Law of Gravity is called a "law" (as opposed to a "theory") is that it can only be observed, not proven. Now there are plenty of theories around (such as those developed by Einstein) that seek to explain the relationship between the various forces of nature, but they don't really explain "why" gravity occurs. Gravity is pretty much a given.
Now Newton's Law of Gravity simply says that matter is attracted to other matter, and the force of the attraction becomes stronger the closer two objects are or the more massive the objects are. (Actually it's stated in mathematical terms, but that's basically what it says.)
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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