Ollaanko nyt jännän äärellä? Tiiän kyllä ettei täällä kukaan voi täysin ottaa tähän kantaa mut kertokaa harrastajat miltä vaikuttaa!
>A new theory of gravity might explain the curious motions of stars in galaxies. Emergent gravity, as the new theory is called, predicts the exact same deviation of motions that is usually explained by invoking dark matter. Prof. Erik Verlinde, renowned expert in string theory at the University of Amsterdam and the Delta Institute for Theoretical Physics, published a new research paper today in which he expands his groundbreaking views on the nature of gravity.
Read more at: http://phys.org/news/2016-11-theory-gravity-dark.html#jCp
>A new theory of gravity might explain the curious motions of stars in galaxies. Emergent gravity, as the new theory is called, predicts the exact same deviation of motions that is usually explained by invoking dark matter. Prof. Erik Verlinde, renowned expert in string theory at the University of Amsterdam and the Delta Institute for Theoretical Physics, published a new research paper today in which he expands his groundbreaking views on the nature of gravity.
Read more at: http://phys.org/news/2016-11-theory-gravity-dark.html#jCp
Vastaukset 7
Vanhimmat
Saapas näkee ja sukka tietää.
Uusi teoria Mars-luotaimen seikkailuista planeetan pinnalla revelled.
https://www.youtube.com/watch?v=QF9IGTvRi0U
Miksi sekoitat suomea ja englanti, ja missä se teoria rellesti?
Marsissa on eri painovoiman taso kuin maassa.
Mutta maastonkin pitäisi kaiken järjen mukaan olla eri. Nuo paikat maastosta löytyvät hassua kyllä myös sekä maassa että marsissa mikäli nasaan on luottaminen, you know,
"Ollaanko nyt jännän äärellä? Tiiän kyllä ettei täällä kukaan voi täysin ottaa tähän kantaa mut kertokaa harrastajat miltä vaikuttaa!"
Jaa-a, siinäpä kysymys. Oma kompetenssi ei riitä lähimainkaan ottamaan kantaa, joten eipä tässä taida oikein muuta voida kuin odottaa ammattilaisten kommentteja. Jenkkilän vaalien takia tiedepiireissäkin taidetaan vielä keskittyä pelkäämään ettei muuan tieteestäkään mitään ymmärtämätön idiootti vain pääse sotkemaan kaikkien asioita.
Täällä kuitenkin yksi kommentti:
"While this seems like an elegant solution to several cosmological problems, there are plenty of reasons to be skeptical. For one, this new variation of emergent gravity still has the same theoretical difficulties of the original. Then there’s the fact that modified gravity models fail to explain large scale effects such as the clustering of galaxies, which regular gravity and dark matter explains very well. This new work is still more of an idea and less of a robust theory.
But even if the model doesn’t work out in the end, it demonstrates how thermodynamics and gravity are deeply connected in ways that aren’t obvious at first glance."
http://www.forbes.com/sites/briankoberlein/2016/11/08/solution-to-dark-matter-proposes-that-gravity-is-an-illusion/
Parit ammattilaisarviot:
Ethan Siegel listaa teoriassa koko joukon vakavia ongelmia mutta toteaa kuitenkin:
"Because as interesting as this idea is, it has to be consistent with the Universe we observe. And in order to have a hope of rising to the level of accepted science, it needs to actually make a prediction that we can go and look for on a matter that hasn’t been decided yet. It has the potential to get there, but it isn’t just a matter of hard work; it has to be right, and whether that’s true or not hasn’t been determined. New ideas are always exciting, and this one might offer some tremendous insights down the road."
http://www.forbes.com/sites/startswithabang/2016/11/12/ask-ethan-what-if-gravity-isnt-really-fundamental/
Luboš Motl tekee mielipiteensä niin sanotusti selväksi:
"I wouldn't okay this wrong piece of work as an undergraduate term paper but he got 6.5 millions of euros for this absolutely worthless pile of feces so many people who are impressed by the money but don't have an idea about science – which includes virtually all journalists – started to think that Verlinde is a top physicist. And he may have decided that he must justify the award by producing even greater piles of bogus hype."
http://motls.blogspot.fi/2016/11/verlindes-de-sitter-mond-is-highly.html
Ja toteaa vielä päätteeksi:
"By the way, if you care, Frank Wilczek [Nobelin voittanut fyysikko] has attended a talk by Erik Verlinde and his words were harsher than mine."
Selitäppä miksi massa ja painovoima sattuvat olemaan maassa näin liki toisiaan?