On 7 March 2014 09:00, John Clark <johnkcl...@gmail.com> wrote:

> On Wed, Mar 5, 2014 at 4:49 PM, LizR <lizj...@gmail.com> wrote:
> > If we are obliged to conserve angular momentum, surely car engines (and
>> tidal power generators) aren't going to work very well?
> No, conserving angular momentum isn't just a good idea, it's the law; and
> yet car engines and tidal power generators still work just fine.

The conservation of energy is a law, too. Think about what we were talking

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