What am I missing? If we know that gravity exists why not assume gravity waves exist and interact? How much did this experiment cost us?It's finally happened, Einstein's prediction of gravitational waves has been confirmed:
https://www.newscientist.com/articl...s-as-gravitational-waves-seen-for-first-time/
The power released by the merging black holes was equivalent to 50 times the power of all the stars in the visible universe. In those 20 milliseconds, the energy of the waves was equivalent to annihilating the mass of three Suns.
This is actually an important result with respect to continued validation of Eisenstein's Theory of Relativity.What am I missing? If we know that gravity exists why not assume gravity waves exist and interact? How much did this experiment cost us?
How much do we need to spend to prove gravity exists?This is actually an important result with respect to continued validation of Eisenstein's Theory of Relativity.
One could, and some do, also assume gravitons exist. And there are on-going experiments to detect them. This, I believe, will be a waste of money.
A big fat zero but that's not what LIGO is doing.How much do we need to spend to prove gravity exists?
That, I think, is science's greatest tragedy... one's an idiot until proven otherwise, and not the other way around.One could, and some do, also assume gravitons exist. And there are on-going experiments to detect them. This, I believe, will be a waste of money.
You know there are a million wrong ideas floating around, and that's only counting the Internet!That, I think, is science's greatest tragedy... one's an idiot until proven otherwise,
The study also once again puts Albert Einstein's theories to the test. For example, the researchers looked for an effect called dispersion, which occurs when light waves in a physical medium such as glass travel at different speeds depending on their wavelength; this is how a prism creates a rainbow. Einstein's general theory of relativity forbids dispersion from happening in gravitational waves as they propagate from their source to Earth. LIGO did not find evidence for this effect.
Artist's conception shows two merging black holes similar to those detected by LIGO. The black holes are spinning in a non-aligned fashion, which means they have different orientations relative to the overall orbital motion of the pair. LIGO found hints that at least one black hole in the system called GW170104 was non-aligned with its orbital motion before it merged with its partner. Credit: LIGO/Caltech/MIT/Sonoma State (Aurore Simonnet)
"It looks like Einstein was right—even for this new event, which is about two times farther away than our first detection," says Laura Cadonati of Georgia Tech and the Deputy Spokesperson of the LSC. "We can see no deviation from the predictions of general relativity, and this greater distance helps us to make that statement with more confidence."
“The LIGO instruments have reached impressive sensitivities,” notes Jo van den Brand, the Virgo Collaboration spokesperson, a physicist at the Dutch National Institute for Subatomic Physics (Nikhef) and professor at VU University in Amsterdam. "We expect that by this summer Virgo, the European interferometer, will expand the network of detectors, helping us to better localize the signals.”
Astrophysicists may have detected gravitational waves last week from the collision of two neutron stars in a distant galaxy — and telescopes trained on the same region might also have spotted the event.
Rumours to that effect are spreading fast online, much to researchers’ excitement. Such a detection could mark a new era of astronomy: one in which phenomena are both seen by conventional telescopes and ‘heard’ as vibrations in the fabric of space-time. “It would be an incredible advance in our understanding,” says Stuart Shapiro, an astrophysicist at the University of Illinois at Urbana–Champaign.
Scientists who work with gravitational-wave detectors won’t comment on the gossip because the data is still under analysis. Public records show that telescopes around the world have been looking at the same galaxy since last week, but astronomers caution that they could have been picking up signals from an unrelated source.
Maybe in a comic book it does.it means that gravitation is coming just flash-like, with infinite speed
Have you considered that there might've been some sort of instrument malfunction or glitch in the event that you mentioned those scientists reported?RE:"" Over vast distances this difference could mean different arrival times""
Eight MINUTES time-shift in so cosmologically small distances as Solar system nearest planets to us???
I cant see any logic in Your words, except that PROBABLY this experiment may be reformulated that gravitational waves are travelling SEVERE MANY-FOLD faster than light waves.
If not agree, where in the formula F=G*M*m/R^2 You see the any kind of the time constant??
Are you really going there, Newtonian 'infinite speed'? Really? We have the best evidence of gravitational waves speed consistent with Einstein's general principle of relativity that equates the numerical value of the ultimate speed of gravity to that of the speed of light from several experiments. I'll stick to GR today instead.RE:"" Over vast distances this difference could mean different arrival times""
Eight MINUTES time-shift in so cosmologically small distances as Solar system nearest planets to us???
I cant see any logic in Your words, except that PROBABLY this experiment may be reformulated that gravitational waves are travelling SEVERE MANY-FOLD faster than light waves.
If not agree, where in the formula F=G*M*m/R^2 You see the any kind of the time constant??
I may believe they was able to produce the mistake for 8 picoseconds but not for 8 minutes. That is a space industry world class monitoring station equipped to measure 100 000 km distances to satellites within 3 milimeters(!!) of accuracy. Picoseconds are their everyday bread. Okay, scales maybe was slightly less precise but even 8 seconds may not counterweight the 8 MINUTES !Have you considered that there might've been some sort of instrument malfunction or glitch in the event that you mentioned those scientists reported?
The three physicists, Rainer Weiss, Kip Thorne, and Barry Barish, won the coveted prize for the detection of gravitational waves–the ripples in the fabric of spacetime that were first predicted by Albert Einstein a century ago. Weiss, Thorne, and Barish made the discovery as part of the LIGO/VIRGO Collaboration back in February 2016.