Gravity Wave 'Smoking Gun' Fizzles: Gravitational Radiation Can Be Produced More Than One Way

ScienceDaily.com ^ | 15 Apr 08 | staff

[RightWhale]

Just so you know

[snarks_when_bored]

Different causes, same signal. Bummer.

[RightWhale]

Indefinite results even if positive. An opportunity to bump the theory up a notch.

[spokeshave]

Does this affect the supply of Schardenfreude in the universe?....seems the dims have caused it to be all used up ....

[RightWhale]

Yes. It would be a wonderful world if we all worked on physics problems instead of utopic politics.

[Rudder]

...spectrum of gravitational radiation...

Measured in what units---volts, amperes, coulombs, joules, Herz, waves, particles...?

[mikrofon]

Measured in what units---volts, amperes, coulombs, joules, Herz, waves, particles...?

I propose the term- Cheneys

[RightWhale]

I don’t know but I suspect it would be based on the instrumentation. Any movement would be picked up by electromagnetic sensors or some kind of interferometer. Gravity itself is seen as a force measured in Newtons, so the effect would be in microNewtons.

[ZX12R]

Measured in what units---volts, amperes, coulombs, joules, Herz, waves, particles...?

I would guess measured in distance, due to distortion or contortion of any object, but I only stayed in a Holiday Inn last night.

[Rudder]

Any movement would be picked up by electromagnetic sensors or some kind of interferometer.

Ah-ha!

[Billthedrill]

Nearly Scale Invariant Spectrum of Gravitational Radiation from Global Phase Transitions

Dang it. There goes another great novel title. BTT.

[trane250]

I don't think that gravity waves have ever been directly detected by purpose built instruments. I think that these waves were proven to exist by examination of certain phenomena affecting a distant star or binary star system.

[RightWhale]

Yes, so far it would take a massive binary system to generate waves strong enough to detect.

[Rudder]

I don't think that gravity waves have ever been directly detected by purpose built instruments.

Years ago an astrophysicist told me of an attempt being made to "measure gravity" directly. It was a failure.

[happinesswithoutpeace]

For later tonight. Thanks for the post.

[Erasmus]

Probably in units of g, which in the MKS system would be meters cubed over the quantity kilograms times seconds squared.

[ZX12R]

Probably in units of g, which in the MKS system would be meters cubed over the quantity kilograms times seconds squared.

That was gonna be my second guess.

[steve86]

Tell Fred Raab at Hanford LIGO (my next door neighbor) http://www.ligo-wa.caltech.edu that it is a failure. Not the same as “not detected yet”.

[Rudder]

My info came from Owen Chamberlain about 20 years ago, so it’s certainly not up to date.

[steve86]

Incidentally, the great physicist John Wheeler died Sunday. A quote from Fred Raab: “He was one of the giants of 20th century physics”.

http://en.wikipedia.org/wiki/John_Archibald_Wheeler