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Space Forum / Shuttle / October 2007



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Gravity Sensor

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The Flavored Coffee Guy - 16 Oct 2007 23:41 GMT
Hello,

We've all heard the bone development is space isn't par for the
course.  This indicates that calcium in a satuate should bond more to
itself in a solution if kept in chemical equalibrium.  Therefore, if
you place a sensor inside of a metal sphere, and use enough amplifier
gain to listen to the molecular bonds being made and broken, that the
rate should slow as gravity increases, and the rate of molecular
bonding and breaking bonds will increase with a reduction in gravity.
The only real missing point of the sensor is keeping it's temperature
absolute.

Bone deterioration indicates that calcium bonds produced by
mineralization break down in a wieghtless environment.  If the human
body were looked at like a flask filled with water and calcium, then
the calcium is not bonding when there is no gravity.
Greg D. Moore (Strider) - 27 Oct 2007 16:54 GMT
> Hello,
>
> We've all heard the bone development is space isn't par for the
> course.  This indicates that calcium in a satuate should bond more to
> itself in a solution if kept in chemical equalibrium.

Not sure why you come to this conclusion.

In any case, the reason for bone development issues in space appears to be
related to lack of stress on the bones.

The general effect can be replicated here on Earth and in orbit, exercise
that focuses on force impact on the long bones seems to greatly mitigate the
issue.

(Basically bones are constantly being built up and torn down.  They build up
partly in reaction to stress (on Earth that's due to things like walking,
etc.)  Remove that stress, and the build-up doesn't match the tear down
rate, leading to lower bone density and more porous bone structures.

> Therefore, if
> you place a sensor inside of a metal sphere, and use enough amplifier
[quoted text clipped - 8 lines]
> body were looked at like a flask filled with water and calcium, then
> the calcium is not bonding when there is no gravity.

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