Category: Scientific theories
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Limits of measurements… Limits of out self…
The limits of classical measurements of mechanical motion have been pushed beyond expectations in recent years. But the sensitivity that we can achieve using purely conventional means is limited. For example, Heisenberg’s uncertainty principle in quantum mechanics implies the presence of “measurement backaction”: the exact knowledge of the location of a particle invariably destroys any […]
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Virtual ‘universe machine’. Galaxy evolution. Understanding unicorns.
By creating millions of virtual universes and comparing them to observations of actual galaxies, researchers have made discoveries that present a powerful new approach for studying galaxy formation. (1) A cosmos full of phenomena. Phenomena we try to understand. Because we imagine we can. A cosmos full of laws. Laws we expect to decipher because […]
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Chameleon theory (theories)… Everlasting worlds…
Supercomputer simulations of galaxies have shown that Einstein’s theory of General Relativity might not be the only way to explain how gravity works or how galaxies form. Physicists at Durham University, UK, simulated the cosmos using an alternative model for gravity — f(R)-gravity, a so called Chameleon Theory. The resulting images produced by the simulation […]
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Measuring laws…
One of the fundamental physical constants, the ‘weak axial vector coupling constant’ (gA), has now been measured with very high precision for the first time. It is needed to explain nuclear fusion in the sun, to understand the formation of elements shortly after the Big Bang, or to understand important experiments in particle physics. With […]
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Non-water. Inside the dead forest.
Led by Professors Raffaele Mezzenga and Ehud Landau, a group of physicists and chemists from ETH Zurich and the University of Zurich have identified an unusual way to prevent water from forming ice crystals, so even at extreme sub-zero temperatures it retains the amorphous characteristics of a liquid. In a first step, the researchers designed and […]
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