From: Ste on 18 Jan 2010 22:27 On 19 Jan, 01:57, jdawe <mrjd...(a)gmail.com> wrote: > > naturally you have 2 opposing directions forward or reverse. So > reverse pull force may look like a push to some observers. It is more than that. It's actually *impossible* to discern whether there is pushing or pulling. The distinction relies on there being an agent responsible, but in nature as I say there is really only 'imbalance', and a vacuum no more sucks than a high-pressure gas blows. It is simply an imbalance of pressures - attempting to attribute 'responsibility' to either the high-pressure gas or the vacuum (i.e. attempting to discern whether the vacuum is pulling or the gas pushing) is ultimately fruitless, because one does not exist without the other, and in fact pushing and pulling are one and the same thing.
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