'Listening' to black holes form with gravity waves
New technology that breaks the quantum measurement barrier has been developed to detect the gravity waves first predicted by Einstein in 1916.
Professor David Blair was one of 800 physicists from around the world who announced a breakthrough in measurement science last month.
"Gravitational wave astronomy is going to be the new astronomy that’s likely to really revolutionize our understanding of the universe," he says.
Read more: http://phys.org/news/2013-08-black-holes-gravity.html
Heisenberg's uncertainty principle is a law so unless they have a theory that replaces quantum mechanics then something is not right...maybe it is just the reporting in the article. Herre is the quote that I refer to: "new equipment has allowed the physicists to break the quantum measurement barrier, defined until recently by Heisenberg's uncertainty principle."
ReplyDeleteCorina Marinescu I love your posts. Thanks for sharing!
ReplyDeleteAh really ... so now they have a device to measure something that has yet to be discovered? How very clever they are ... ;)
ReplyDeleteCristian, they refer to the quantum measurement...which I'm sure we both know what is it.
ReplyDeleteSo...was the first time the quantum measurement barrier has been broken in a full scale gravitational wave detector, using quantum squeezing.
In the research: "Enhanced sensitivity of the LIGO gravitational wave detector by using squeezed states of light," published in the journal Nature Photonics, squeezed vacuum is injected into the dark port of the beam splitter to improve the performance of one of the detectors of the Laser Interferometer Gravitational-Wave Observatory (LIGO) beyond the quantum noise limit.
U can read about the experiment H1 here:
http://www.phys.virginia.edu/Announcements/Seminars/Slides/S2313.pdf
Exactly. They are measuring light waves not gravitons.
ReplyDeleteDavid...I hear u but I disagree.
ReplyDeleteGravity waves could be generated by extreme cosmic events such as colliding stars, black holes, and supernova explosions, which carry big enough amounts of energy at the speed of light.
I think they are on the right track...and with the quantum squeezing they will be able to see much more distant sources, however they'll need a southern hemisphere detector.
Nope.
ReplyDeleteMass attraction is not signal mediated and hence not temporally limited and hence cannot produce the duration lags characteristic of wave phenomena.
ReplyDelete