[ExI] Gravity wave math

Tomaz Kristan protokol2020 at gmail.com
Mon May 29 15:32:42 UTC 2017


Well, John, you have predicted more detections for the current "production"
phase of LIGO. On this list, a year or so ago. I predicted none.

You may still bi right, but nothing has happened yet.

This 1/1000 of a proton width means nothing.

On Mon, May 29, 2017 at 5:24 PM, John Clark <johnkclark at gmail.com> wrote:

> One thing I found mind boggling about the October 12 2015
> ​event​
>  is that in a fraction of a second a amount of matter equivalent to 3
> ​suns​
>  was converted entirely into energy, in this case into gravitational waves
> ​. By comparison the Hiroshima bomb converted less than the mass of a dime
> into energy. ​A
> nd yet spacetime is so stiff
> ​and it's so hard to deform that if you were in orbit around the Black
> Hole collision site at the same distance the Earth is from the sun the
> gravitational
> waves would make your ears pop but that's about it. So how could LIGO
> detect those waves from a distance of a billion light years? One reason is
> that LIGO is so sensitive it can tell when the distance between 2 mirrors 4
> kilometers apart changes by 1/10000 the width of a proton, the other reason
> is LIGO detects the displacement the gravitational waves produce not their
> energy as telescopes do with light, so the strength of the signal LIGO
> detects decreases linearly with distance not as distance squared as with
> electromagnetic detection. That means it can hear things far far away.
>
> John K Clark   ​
>
>
>>
>
>
>
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>


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