Say, for instance, a hypothetical self-driving car is sold as being the safest on the market. One of the factors that makes it safer is that it “knows” when a big truck pulls up along its left side and automatically moves itself three inches to the right while still remaining in its own lane. But what if a cyclist or motorcycle happens to be pulling up on the right at the same time and is thus killed because of this safety feature?

Magnetic materials are always made of metal, but not all metals are magnetic

Nevertheless, physicists continue to select theories based on the same three criteria of beauty: simplicity, naturalness, and elegance.

I think it’s time we take a lesson from the history of science. Beauty does not have a good track record as a guide for theory-development.

History has a second lesson. Even though beauty was arguably a strong personal motivator for many physicists, the problems that led to breakthroughs were not merely aesthetic misgivings – they were mathematical contradictions. Einstein, for example, abolished absolute time because it was in contradiction with Maxwell’s electromagnetism, thereby creating special relativity. He then resolved the conflict between special relativity and Newtonian gravity, which gave him general relativity. Dirac later removed the disagreement between special relativity and quantum mechanics, which led to the development of the quantum field theories which we still use in particle physics today.

My conclusion from this long line of null results is that when physics tries to rectify a perceived lack of beauty, we waste time on problems that aren’t really problems. Physicists must rethink their methods, now – before we start discussing whether the world needs a next larger particle collider or yet another dark matter search.

In some sense, by studying one model deeply enough, we can study them all.

Their findings indicate that the set of all quantum field theories forms a unique mathematical structure, one that does indeed pull itself up by its own bootstraps, which means it can be understood on its own terms.

The notion that counting more shapes in the sky will reveal more details of the Big Bang is implied in a central principle of quantum physics known as “unitarity.” Unitarity dictates that the probabilities of all possible quantum states of the universe must add up to one, now and forever; thus, information, which is stored in quantum states, can never be lost — only scrambled. This means that all information about the birth of the cosmos remains encoded in its present state, and the more precisely cosmologists know the latter, the more they can learn about the former.

This is, I thought, little more than an analogy with Boyle’s Law, one of the most striking early successes of the scientific revolution, which holds that the pressure and volume of a fixed amount of gas are inversely proportional.  Release the contents from a steel cylinder into a balloon and the container expands.  But it still contains no more gas than before.  Something like that must have been in the mind of the first person who first spoke of “inflating” the currency. From there it was a short jump to the way that classical quantity theory relies on the principle of plenitude – the age-old assumption, inherited from Plato, that there can be nothing truly new under the sun, that the collection of goods of “general price level” were somehow fixed.

Come on, harvest me! I’ll just change your world some more.

I think there is some interesting physics here. In particular, there is something curious about the difference between static and kinetic friction. First, let me make some observations and assumptions.

448-page preprint paper

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tunnel splitting

Solve problems involving mixtures of gases

Define a thermodynamic process

Sempre ricordando che quando si parla di sfericità, l’elettrone non deve essere pensato come una pallina: si tratta di una particella elementare, dunque non strutturata e indivisibile, e per forma si intende in realtà la simmetria delle sue interazioni con i campi esterni, con altre cariche.

Since water is denser than air, and the reflection is diffuse. A lot of light is internally reflected, thereof, increasing the probability of absorption at surface.

This is because the light now has a layer of water to go through. And due to the reflectance of water, not all light at the air-liquid-interface (border between air and water) goes through the water. Some of it is reflected.

There are two types of reflection (two ways the wave can be thrown back). Specular Diffuse

is 100%,

to face the very

lead ion nuclei

B-hadron

removing

selected

Expand the trigger description for the paper draft.

that combines the outputs of IP3D and SV1,

Quantum Realism: A virtual reality would be subject to virtual time, where each processing cycle is one "tick." Every gamer knows that when the computer is busy the screen lags—game time slows down under load. Likewise, time in our world slows down with speed or near massive bodies, suggesting that it is virtual. So the rocket twin only aged a year because that was all the processing cycles the system busy moving him could spare. What changed was his virtual time.

unitary operator is a surjective bounded operator

Deep learning approach based on dimensionality reduction for designing electromagnetic nanostructures

Physics-guided Neural Networks (PGNNs)

Opening the black box of deep learning

Using Machine Learning to Predict the Evolution of Physics Research

DeepSphere: Efficient spherical Convolutional Neural Network with HEALPix sampling for cosmological applications

Toward an AI Physicist for Unsupervised Learning

The establishing of this mutual relationship between technology and physics is correct. But it remains a merely historiological establishing of facts and says nothing about that in which this mutual relationship is grounded. The decisive question still remains: Of what essence is modern technology that it thinks of putting exact science to use?

we found advanced math and science courses advertised but not actually offered and specialized STEM programs eroded or discontinued within a few years of inception.

Yet, across the country, 2 in 5 high schools don't offer physics, according to an Education Week Research Center analysis of data from the U.S. Department of Education's office for civil rights.

similarities between the two

In 2013, François Englert and Peter Higgs were awarded the Nobel Prize in Physics for the development of the Higgs mechanism.

It is encoded in a compact description, the so-called 'Lagrangian', which even fits on t-shirts and coffee mugs.

Actually, the addition of \text{h}.\text{c}. is not required for term 2, since term 2 is self-adjoint.

we recommend using the term 'transformation' instead of 'decay', as this more accurately describes the physical process

where μ and ν are Lorentz indices representing the spacetime components

Feynman diagrams

quantum field theory

The latest success was the verification of the Brout–Englert–Higgs field by ATLAS and CMS at CERN's Large Hadron Collider in 2012. Both experiments successfully detected the quantised excitation of the BEH field—the so-called Higgs boson.

the Brout–Englert–Higgs field interacts with particles that have mass (all particles except the gluon and the photon)

Matter particles can be divided into three groups: quarks (q) and antiquarks (\bar{q}); electrically charged leptons (\ell) and antileptons (\bar{\ell}); neutrinos (ν) and antineutrinos (\bar{\nu}). Gluons (g) couple to colour charge, which only quarks, antiquarks, and gluons themselves, have.

Goel’s specialty is “nanobiophysics” — she studies how physics and nanotechnology can effect biology and medicine.

The following is a statement of the laws of physics, not just my own personal opinion. "When power is Variable, Power controls airspeed." "When power is fixed, Pitch controls airspeed." In general, airplanes go where you point them, and go as fast as the power dictates. This is the easiest way to fly, and it works in all airplanes.

π2/90

“What’s the world resting on now, without the tortoise to hold it up?”

I always found it incredible. He would start with some problem, and fill up pages with calculations. And at the end of it, he would actually get the right answer! But he usually wasn’t satisfied with that. Once he’d gotten the answer, he’d go back and try to figure out why it was obvious. And often he’d come up with one of those classic Feynman straightforward-sounding explanations. And he’d never tell people about all the calculations behind it. Sometimes it was kind of a game for him: having people be flabbergasted by his seemingly instant physical intuition, not knowing that really it was based on some long, hard calculation he’d done.

***By which I mean, it’s even in Wikipedia

Actually, I didn’t need Holmesian deductions to conclude that Aad et al. aren’t using a conventional definition of authorship. It’s widely known*** that at least two groups in experimental particle physics operate under the policy that every scientist or engineer working on a particular detector is an author on every paper arising from that detector’s data. (Two such detectors at the Large Hadron Collider were used in the Aad et al paper, so the author list is the union of the “ATLAS collaboration” and the “CMS collaboration”.) The result of this authorship policy, of course, is lots of “authorships” for everyone: for the easily searchable George Aad, for instance, over 400 since 2008.

iomedical collaborations are moreheterogeneous and socially diffuse in character and do notappear to have the same degree of multilayered, internalreview as HEP research collaborations. T

TheHEP research community is thus characterized by highlevels of internal scrutiny, mutual trust—witness, for in-stance, the institutionalized practice of relying upon, andciting, preprints—and peer tracking, such that it is notsusceptible to systematic fraud. Contrary

The answer probably has to do with the relative intensityof socialization and oral communication (Traweek, 1992,pp. 120 –123), along with the character of the organizationalstructures and value systems, which define collaborations inlarge-scale, high-energy physics and biomedical research.

owever, multipleauthorship and hyperauthorship are not problematized byphysicists as they are by the biomedical community.

Thisarticle(a)beginswithabrief,historicaloverviewofscholarlypublishing,focusingontheroleoftheauthorandtheconstitutionoftrustinscientificcommunication;(b)offersanimpressionisticsurveyandanalysisofrecentdevelop-mentsinthebiomedicalliterature;(c)explorestheextenttowhichdeviantpublishingpracticesinbiomedicalpublishingareafunctionofsociocognitiveandstructuralcharacteris-ticsofthedisciplinebycomparingbiomedicinewithhighenergyphysics,theonlyotherfieldwhichappearstoexhibitcomparablehyperauthorshiptendencies;and(d)assessestheextenttowhichcurrenttrendsinbiomedicalcommuni-cationmaybeaharbingerofdevelopmentsinotherdisci-plines

Combined Measurement of the Higgs Boson Mass in pp<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>p</mi><mi>p</mi></math> Collisions at s√=7<math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><msqrt><mi>s</mi></msqrt><mo>=</mo><mn>7</mn></math> and 8 TeV with the ATLAS and CMS Experiments

An all-star international team of astrophysicists used an exquisitely sensitive, $1.1 billion set of twin instruments known as the Laser Interferometer Gravitational-wave Observatory, or LIGO, to detect a gravitational wave generated by the collision of two black holes 1.3 billion light-years from Earth.

Ultimately,the theory has been shown to be incorrect, and has been epistemically replaced by the theory of General Relativity. Nevertheless, the theory is able to make exceptionally good approximations of gravitational forces –so good that NASA’s moon missions have relied upon them.

In a landmark study, scientists at Delft University of Technology in the Netherlands reported that they had conducted an experiment that they say proved one of the most fundamental claims of quantum theory — that objects separated by great distance can instantaneously affect each other’s behavior.

the strongest evidence yet to support the most fundamental claims of the theory of quantum mechanics about the existence of an odd world formed by a fabric of subatomic particles, where matter does not take form until it is observed and time runs backward as well as forward.

"It's intriguing that you've got general relativity predicting these paradoxes, but then you consider them in quantum mechanical terms and the paradoxes go away," says University of Queensland physicist Tim Ralph. "It makes you wonder whether this is important in terms of formulating a theory that unifies general relativity with quantum mechanics."

Schrödinger thought that the Greeks had a kind of hold over us—they saw that the only way to make progress in thinking about the world was to talk about it without the “knowing subject” in it. QBism goes against that strain by saying that quantum mechanics is not about how the world is without us; instead it’s precisely about us in the world. The subject matter of the theory is not the world or us but us-within-the-world, the interface between the two.

The discovery of the Higgs Boson has been a testament to the co- herence of the Standard Model of Physics, but the way in which this boson interacts with a fundamental class of particles known as leptons has yet to be explored, due to the rarity with which the Higgs Boson decays into leptons and the event's similarity to the decay of other particles such as the Z Boson. By creating a machine learning model to accurately determine whether a Higgs Boson is decaying into tau particles (a type of lepton) within a particle accelerator, physicists will be able to explore the nature of the Higgs's interaction with lep- tons. Our model serves to contribute to the work of others involved in the Higgs Boson Machine Learning Challenge, a crowdsourced eort to generate a satisfactory classication model to be used at CERN's facilities, where the Higgs Boson is studied.