Theorist: “for me gravity doesn’t exist”
|June 30, 2014||Posted by News under Physics, Cosmology, News|
Further to Huffington Post announces: Universe shouldn’t exist, another theorist thinks, maybe gravity doesn’t exist.
From the Daily Galaxy:
In January 2010, Erik Verlinde, professor ofTheoretical Physics and world-renowned string theorist, caused a worldwide stir with the publication of On the Origin of Gravity and the Laws of Newton, in which he challenged commonly held perceptions on gravity, going so far as to state ‘for me gravity doesn’t exist’. If he is proved correct, the consequences for our understanding of the universe and its origins in a Big Bang will be far-reaching.
“Everyone who is working on theoretical physics is trying to improve on Einstein,” says Robbert Dijkgraaf, UvA University Professor and current director of the Institute for Advanced Study in Princeton (where scientists including Turing, Oppenheimer and Einstein have worked) In my opinion, Erik Verlinde has found an important key for the next step forward.”
Verlinde, who received the Spinoza prize (the Dutch Nobel Prize) from the Netherlands Organisation for Science, is famous for developing this new theory, or idea, on gravity in which he says that gravity is an illusion. “Gravity is not an illusion in the sense that we know that things fall,” says Verline.” Most people, certainly in physics, think we can describe gravity perfectly adequately using Einstein’s General Relativity. But it now seems that we can also start from a microscopic formulation where there is no gravity to begin with, but you can derive it. This is called ‘emergence’.”
“We have other phenomena in Physics like this,” Verlinde continued. “Take a concept like ‘temperature’, for instance. We experience it every day. We can feel temperature. But, if you really think about the microscopic molecules, there’s no notion of temperature there. It’s something that has to do with the property of all molecules together; it’s like the average energy per molecule.
Best guess is, his idea is falling flat in the physics world.
For one thing, most of the article is taken up with the alternative view:
Refuting recent cosmological speculation that gravity “is an illusion” (see below), the most precise measurements to date of the strength of gravitational interactions between distant galaxies show perfect consistency with general relativity’s predictions.
See also: The Science Fictions series at your fingertips (cosmology).
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