A Scientist Takes On Gravity. It From Bit: The Case Of Gravity. Three weeks of speculations have come to an end.
Since this morning Verlinde's paper is available on arXiv. I encourage you to give it a try. The article is well written and the math is limited to fairly basic stuff. This combination makes it a relatively easy read. Granted, the paper requires some more gray matter cells being active than the average “Hammock Physicist” blog entry, but for an average Hammock Physicist reader probably not by an insurmountable amount. The entropy force: a new direction for gravity - physics-math - Editorial: A gravity story to take us out of Newton's orchard WHAT exactly is gravity?
Everybody experiences it, but pinning down why the universe has gravity in the first place has proved difficult. Although gravity has been successfully described with laws devised by Isaac Newton and later Albert Einstein, we still don't know how the fundamental properties of the universe combine to create the phenomenon. Technology Review: Blogs: arXiv blog: Gravity Emerges from Quant. One of the hottest new ideas in physics is that gravity is an emergent phenomena; that it somehow arises from the complex interaction of simpler things.
A few month’s ago, Erik Verlinde at the the University of Amsterdam put forward one such idea which has taken the world of physics by storm. Verlinde suggested that gravity is merely a manifestation of entropy in the Universe. His idea is based on the second law of thermodynamics, that entropy always increases over time. FQXiComm:Myth Gravity. The Myth of Gravity A new model in which gravity is not a fundamental force could—counterintuitively—give a controversial quantum gravity theory a boost.
It may also change our picture of spacetime, and do away with dark energy. by Sophie Hebden. A New View Of Gravity. W24 - NU! Nederlander bedenkt revolutionaire zwaartekrachttheori. NRC interview 2007. Entropic force. Diffusion from a microscopic and macroscopic point of view.
Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The barrier is removed, and the solute diffuses to fill the whole container. Top: A single molecule moves around randomly. Middle: With more molecules, there is a statistical trend that the solute fills the container more and more uniformly. Ideal chain. An ideal chain (or freely-jointed chain) is the simplest model to describe polymers, such as nucleic acids and proteins.
It only assumes a polymer as a random walk and neglects any kind of interactions among monomers. Although it is simple, its generality gives us some insights about the physics of polymers. In this model, monomers are rigid rods of a fixed length l, and their orientation is completely independent of the orientations and positions of neighbouring monomers, to the extent that two monomers can co-exist at the same place. Emergence. Snowflakes forming complex symmetrical patterns is an example of emergence in a physical system.
In philosophy, systems theory, science, and art, emergence is the way complex systems and patterns arise out of a multiplicity of relatively simple interactions. Emergence is central to the theories of integrative levels and of complex systems. Biology can be viewed as an emergent property of the laws of chemistry which, in turn, can be viewed as an emergent property of particle physics.
Dutch string theorist Erik Verlinde: gravity does not exist. The. Marie Curie. Colloquium Erik Verlinde. Zware klap voor zwaartekracht. The entropic origin of gravity sur Flickr : partage de photos ! Introducing the Professor Doctor sur Flickr : partage de photos Yeah, what about it ? sur Flickr : partage de photos ! Multitasking sur Flickr : partage de photos !
That was elegant sur Flickr : partage de photos ! Folia 4 juni 2010 pp10-11. De boekhouder van het heelal. UvA - De zwaartekracht van Erik Verlinde.