Dande Lion Farmva

“Hi Bee, One of the frequently repeated phrases hither inwards Italy past times so called “science enthusiasts” is that “science is non democratic”, which to me sounds similar an excuse for someone to justify some authoritarian or semi-fascist fantasy. We run across this on countless “Science pages”, 1 really pop illustration existence Fare Serata Con Galileo . It's non a bad page per se, quite the contrary, but the degree of comments including variations of “Democracy is overrated”, “Darwin plant to eliminate weak as well as stupid people” as well as the green “Science is non democratic” is unbearable. It underscores a troubling “sympathy for authoritarian politics” that to me seems to locomote to a greater extent than as well as to a greater extent than mutual amid “science enthusiasts". The classic illustration it’s made is “the speed of calorie-free is non voted”, which to me, equally truthful equally it may be, has some sinister resonance. Could you lot comment on t...

I’ll endure traveling the adjacent ii weeks. First to Cambridge to celebrate which was inwards January ), too then inwards Trieste for a conference on “Probing the spacetime fabric: from concepts to phenomenology.”   Rant coming upwards later on today, only after that delight stimulate for a tedious time.

Numbers speak. [Img Src ] Once upon a time, nosotros had problems inwards the foundations of physics. Then nosotros solved them. That was forty years ago. Today nosotros pass most of our fourth dimension discussing non-problems. Here is i of these non-problems. Did y'all know that the universe is spatially almost flat? There is a discover inwards the cosmological concordance model called the “curvature parameter” that, according to electrical current observation , has a value of 0.000 plus-minus 0.005. Why is that a problem? I don’t know. But hither is the storey that cosmologists tell. From the equations of General Relativity y'all tin calculate the dynamics of the universe. This agency y'all larn relations betwixt the values of observable quantities today too the values they must accept had inwards the early on universe. The contribution of curved shape to the dynamics, it turns out, increases relative to that of thing too radiations every bit the universe exp...

I’m dorsum from Cambridge, where I attended the conference “Gravity too Black Holes” inwards award of Stephen Hawking’s 75th birthday. First things first, the ikon on the conference poster, website, banner, etc is non a psychedelic banana, but gravitational moving ridge emission inwards a dark hole merger. It’s a nonetheless from a numerical simulation done yesteryear a Cambridge grouping that you tin sentry inwards total on YouTube . What create gravitational waves convey to create amongst Stephen Hawking? More than yous powerfulness think. Stephen Hawking, together amongst Gary Gibbons, wrote ane of the start papers on the analysis of gravitational moving ridge signals. That was inwards 1971 , briefly later gravitational waves were start “discovered” yesteryear Joseph Weber. Weber’s detection was never confirmed yesteryear other groups. I don’t mean value anybody knows simply what he measured, but whatever it was, it clearly wasn’t gravitational waves. Also Hawking’s – a...

I conduct maintain a headache and blame Nature mag for it. For almost fifteen years, I conduct maintain worked on quantum gravity phenomenology, which agency I written report ways to experimentally bear witness the quantum properties of infinite together with time. Since 2007, my query surface area has its ain conference series, “Experimental Search for Quantum Gravity,” which took house most late September 2016 inwards Frankfurt, Germany. Extrapolating from whom I personally know, I gauge that almost 150-200 people currently operate inwards this field. But I conduct maintain never seen nor heard anything of Chiara Marletto together with Vlatko Vedral, who only wrote a comment for Nature  magazine complaining that the query surface area doesn’t exist. In their comment, titled “ Witness gravity’s quantum side inwards the lab ,” Marletto together with Vedral telephone telephone for “a focused coming together bringing together the quantum- together with gravity-physics commu...

Noise is the physicists’ biggest enemy. Unless you lot are a theorist whose pet view masquerades equally noise. Then you lot are best friends alongside noise. Like Roger Penrose. Correlated "noise" inwards LIGO gravitational moving ridge signals: an implication of Conformal Cyclic Cosmology Roger Penrose arXiv:1707.04169 [gr-qc] Roger Penrose made his elevate alongside the Penrose-Hawking theorems in addition to twistor theory. He is besides well-known for writing books alongside real many pages, most lately “Fashion, Faith, in addition to Fantasy inwards the New Physics of the Universe.” One man’s dissonance is about other man’s signal. Penrose doesn’t similar most of what’s currently inwards fashion, but believes that human consciousness can’t live on explained past times known physics in addition to that the universe is cyclically reborn. This cyclic cosmology, hence his recent claim, gives rising to correlations inwards the LIGO dissonance – just similar what...

Fluorescence picture of Bose-Einstein-Condensate. Image Credits: Stefan Kuhr together with Immanuel Bloch, MPQ String theory is infamously detached from experiment. But inwards a novel paper, a grouping from United Mexican US seat forrad a proposal to alter that String theory phenomenology together with quantum many–body systems Sergio Gutiérrez, Abel Camacho, Héctor Hernández arXiv: 1707.07757 [gr-qc] Ahead, allow me endure clear they don’t desire to show string theory, but the presence of additional dimensions of space, which is a prediction of string theory. In the paper, the authors calculate how additional space-like dimensions demeanour on a condensate of ultra-cold atoms, known every bit Bose-Einstein-Condensate. At such depression temperatures, the atoms transition to a acre where their quantum wave-function acts every bit ane together with the organization begins to display quantum effects, such every bit interference, throughout. In the presence of extra-dimens...