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    SubjectRe: IDE freeze for seconds

    Roeland Th. Jans wrote:
    > On Wed, Dec 02, 1998 at 03:25:24PM -0000, Simon Kenyon wrote:
    > > On 02-Dec-98 Alex Buell wrote:
    > > > What is the first thing that ceases when you spin down a planet? That's
    > > > right, gravity. Everything not tied down would just fly out into space,
    > > > and that includes the atmosphere. Simple.
    > >
    > > i don't see a smiley, but i have to assume that that was a little joke! right?
    > well, the problem is that... it's true. so don't use ower management on the
    > earth spin...

    Where do people get such crazy ideas?
    Earth's gravity has nothing to do with spin, but mass. The mass creates
    the gravity. The spin creates a centrifugal force that's opposed
    to gravity, it weakens the effect of gravity slightly.

    Stopping the spin wouldn't mess up gravity at all. There would
    be other unpleasant effects like making a day half a year long,
    turning one side of the planet into desert and freezing the other.

    As for trying to save the environment by spinning down drives,
    consider something more efficient. What do you do when
    optimizing the kernel? Instrument it and work on whatever part
    that waste most time (or other resources).
    The same principle applies to energy conservation. *One* trip less with
    your car will save more power/carbon dioxide than any
    amount of disk drive tweaking, even giving up disk drives for
    the rest of your life wouldn't save as much.

    Helge Hafting

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