Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid
These are organized by a classification scheme developed exclusively for Cosma. More…
Physics Central: Physics in Action (American Physical Society)
Physical Sciences Subject Guide (Library of Congress)
Introductory Physics Science Tracer Bullet (Library of Congress)
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Physical : (a) of or relating to physics (b) characterized or produced by the forces and operations of physics (c) having material existence : perceptible especially through the senses and subject to the laws of nature — Webster
Realm : kingdom, sphere, domain — Webster
Physical Realm : kingdom, sphere, or domain of things that have material existence and are perceptible, especially those things perceptible through the senses and subject to the laws of nature — M.E.Hopper
Physical universe In religion and esotericism, the term “physical universe” or “material universe” is used to distinguish the physical matter of the universe from a proposed spiritual or supernatural essence. — Wikipedia
Physical science is a branch of natural science that studies non-living systems, in contrast to life science. It in turn has many branches, each referred to as a “physical science”, together called the “physical sciences”. However, the term physical creates an unintended, somewhat arbitrary distinction, since many branches of physical science also study biological phenomena and branches of chemistry, such as organic chemistry. — Wikipedia
Physics is the natural science that studies matter and its motion and behavior through space and time and that studies the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, and its main goal is to understand how the universe behaves. — Wikipedia
Center for History of Physics (American Institute of Physics)
History of Physics Exhibits (American Institute of Physics)
All Nobel Prizes in Physics (Nobel Foundation)
Physics History and Terminology (Eric Weisstein’s World of Physics, Wolfram Research)
How Things Work: An Introduction to Physics (Coursera)
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Einstein, Oppenheimer, Feynman: Physics in the 20th Century (MIT Opencourseware)
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What If? Answering your hypothetical questions with physics, every Tuesday.
- Earth-Moon Fire Poleby xkcd on May 21, 2018 at 12:00 am
<article class="entry"> <a href="//what-if.xkcd.com/157/"><h1>Earth-Moon Fire Pole</h1></a> <p id="question">My son (5y) asked me today: If there were a kind of a fireman's pole from the Moon down to the Earth, how long would it take to slide all the way from the Moon to the Earth?</p> <p id="attribute">Ramon Schönborn, Germany</p> <p>First, let's get a few things out of the […]
- Electrofishing for Whalesby xkcd on March 9, 2017 at 12:00 am
<article class="entry"> <a href="//what-if.xkcd.com/156/"><h1>Electrofishing for Whales</h1></a> <p id="question">I used to work on a fisheries crew where we would use an electro-fisher backpack to momentarily stun small fish (30 - 100 mm length) so we could scoop them up with nets to identify and measure them. The larger fish tended to be stunned for slightly longer because of their larger surface area but I don't […]
- Toaster vs. Freezerby xkcd on February 28, 2017 at 12:00 am
<article class="entry"> <a href="//what-if.xkcd.com/155/"><h1>Toaster vs. Freezer</h1></a> <p id="question">Would a toaster still work in a freezer?</p> <p id="attribute">—<a href="http://www.maximumfun.org/shows/my-brother-my-brother-and-me">My Brother, My Brother and Me</a>, <a […]
- Coast-to-Coast Coastingby xkcd on February 8, 2017 at 12:00 am
<article class="entry"> <a href="//what-if.xkcd.com/154/"><h1>Coast-to-Coast Coasting</h1></a> <p id="question">What if the entire continental US was on a decreasing slope from West to East. How steep would the slope have to be to sustain the momentum needed to ride a bicycle the entire distance without pedaling?</p> <p id="attribute">—Brandon Rooks</p> <p>Too steep to actually build, […]
- Hide the Atmosphereby xkcd on January 30, 2016 at 12:00 am
<article class="entry"> <a href="//what-if.xkcd.com/153/"><h1>Hide the Atmosphere</h1></a> <p id="question">Earth’s atmosphere is really thin compared to the radius of the Earth. How big a hole do I need to dig before people suffocate?</p> <p id="attribute">—Sam Burke</p> <p>The idea here is straightforward: When you dig a hole in the ground, the hole fills up with air.<span […]
Physics News - Physics News, Material Sciences, Science News, Physics The latest news in physics, materials science, quantum physics, optics and photonics, superconductivity science and technology. Updated Daily.
- Breakthrough proof clears path for quantum AIon October 18, 2021 at 7:07 pm
Convolutional neural networks running on quantum computers have generated significant buzz for their potential to analyze quantum data better than classical computers can. While a fundamental solvability problem known as "barren plateaus" has limited the application of these neural networks for large data sets, new research overcomes that Achilles heel with a rigorous proof that guarantees scalability.
- Analysis puts most general constraints on...on October 18, 2021 at 4:07 pm
For decades, physicists have theorized that the current best theory describing particle physics—the "Standard Model"—was not sufficient to explain the way the universe works. In the search for physics beyond the Standard Model (BSM), elusive particles called neutrinos might point the way.
- Ultrafast control of quantum materialson October 18, 2021 at 3:13 pm
An international team with participation of the Paul Scherrer Institute PSI shows how light can fundamentally change the properties of solids and how these effects can be used for future applications. The researchers summarize their progress in this field, which is based among other things on experiments that can also be carried out at the Swiss X-ray free-electron laser SwissFEL, in the scientific journal Reviews of Modern Physics.
- Experiments reveal formation of a new state of...on October 18, 2021 at 3:12 pm
The central principle of superconductivity is that electrons form pairs. But can they also condense into foursomes? Recent findings have suggested they can, and a physicist at KTH Royal Institute of Technology today published the first experimental evidence of this quadrupling effect and the mechanism by which this state of matter occurs.
- Ultrafast magnetism: Heating magnets, freezing...on October 18, 2021 at 1:07 pm
Magnetic solids can be demagnetized quickly with a short laser pulse, and there are already so-called HAMR (Heat Assisted Magnetic Recording) memories on the market that function according to this principle. However, the microscopic mechanisms of ultrafast demagnetization remain unclear. Now, a team at HZB has developed a new method at BESSY II to quantify one of these mechanisms and they have applied it to the rare-earth element Gadolinium, whose magnetic properties are caused by electrons on […]
- Cutting through the noise: AI enables...on October 18, 2021 at 12:06 pm
Researchers led by the Institute of Scientific and Industrial Research (SANKEN) at Osaka University have trained a deep neural network to correctly determine the output state of quantum bits, despite environmental noise. The team's novel approach may allow quantum computers to become much more widely used.
- New research can help planners leverage the...on October 18, 2021 at 9:02 am
Marsh plants, which are ubiquitous along the world's shorelines, can play a major role in mitigating the damage to coastlines as sea levels rise and storm surges increase. Now, a new MIT study provides greater detail about how these protective benefits work under real-world conditions shaped by waves and currents.
- Cooling radio waves to their quantum ground stateon October 15, 2021 at 6:00 pm
Researchers at Delft University of Technology have found a new way to cool radio waves all the way down to their quantum ground state. To do so, they used circuits that employ an analog of the so-called laser cooling technique that is frequently used to cool atomic samples. The device used a recently developed technique the researchers call photon pressure coupling, which is predicted to be of use in detecting ultra-weak magnetic resonance (MRI) signals or for quantum-sensing applications that […]
- Intelligent optical chip to improve...on October 15, 2021 at 2:47 pm
From the internet, to fiber or satellite communications and medical diagnostics, our everyday life relies on optical technologies. These technologies use optical pulsed sources to transfer, retrieve or compute information. Gaining control over optical pulse shapes thus paves the way for further advances.
- Using quantum Parrondo's random walks for...on October 15, 2021 at 2:11 pm
Assistant Professor Kang Hao Cheong and his research team from the Singapore University of Technology and Design (SUTD) have set out to apply concepts from quantum Parrondo's paradox in search of a working protocol for semiclassical encryption. In a recent Physical Review Research letter, the team published the paper "Chaotic switching for quantum coin Parrondo's games with application to encryption' and discovered that chaotic switching for quantum coin Parrondo's games has similar underlying […]
Nature Physics - Issue - nature.com science feeds Nature Physics offers a unique mix of news and reviews alongside top-quality research papers. Published monthly, in print and online, the journal reflects the entire spectrum of physics, pure and applied.
- State with spontaneously broken time-reversal...by Vadim Grinenko on October 18, 2021 at 12:00 am
Nature Physics, Published online: 18 October 2021; doi:10.1038/s41567-021-01350-9A state that breaks time-reversal symmetry is observed in the normal phase above the superconducting critical temperature in a multiband superconductor. This could be explained by correlations between the Cooper pairs formed in different bands.
- Quantum-torque-induced breaking of magnetic...by A. Farolfi on October 18, 2021 at 12:00 am
Nature Physics, Published online: 18 October 2021; doi:10.1038/s41567-021-01369-yThe evolution of many-body magnetic spin systems is influenced by many factors, including inhomogeneity and the presence of interfaces. These effects have now been measured in a far-from-equilibrium binary mixture of ultracold gases.
- Structure and properties of two superionic ice...by Vitali B. Prakapenka on October 14, 2021 at 12:00 am
Nature Physics, Published online: 14 October 2021; doi:10.1038/s41567-021-01351-8Measurements of the phase diagram of water reveal first-order phase transitions to face- and body-centred cubic superionic ice phases. The former is suggested to be present in the interior of ice giant planets.
- Witnessing quantum correlations in a nuclear...by Dorian A. Gangloff on October 14, 2021 at 12:00 am
Nature Physics, Published online: 14 October 2021; doi:10.1038/s41567-021-01344-7Atoms in a semiconductor can have non-zero nuclear spins, creating a large ensemble with many quantum degrees of freedom. An electron spin coupled to the nuclei of a semiconductor quantum dot can witness the creation of entanglement within the ensemble.
- Quantum coherent spin–electric control in a...by Junjie Liu on October 14, 2021 at 12:00 am
Nature Physics, Published online: 14 October 2021; doi:10.1038/s41567-021-01355-4Through chemical design, the spins in molecular nanomagnets may be used as electrically tunable qubits. Electrical control of molecular distortion enables manipulation of the quantum spin state while suppressing decoherence from magnetic fields.
- Spins strain to see the lightby Lilian Childress on October 14, 2021 at 12:00 am
Nature Physics, Published online: 14 October 2021; doi:10.1038/s41567-021-01365-2Integrating quantum technology with existing telecom infrastructure is hampered by a mismatch in operating frequencies. An optomechanical resonator now offers a strain-mediated spin–photon interface for long-distance quantum networks.
- Hot black icesby Simone Anzellini on October 14, 2021 at 12:00 am
Nature Physics, Published online: 14 October 2021; doi:10.1038/s41567-021-01358-1At high pressure and temperature, water forms two crystalline phases, known as hot ‘black’ ices due to their partial opaqueness. A detailed characterization of these phases may explain magnetic field formation in giant icy planets like Neptune.
- All in oneby Roberta Sessoli on October 14, 2021 at 12:00 am
Nature Physics, Published online: 14 October 2021; doi:10.1038/s41567-021-01382-1Molecular spin qubits that can be controlled electrically are typically susceptible to decoherence. Holmium molecular spins provide a solution by combining robust coherence with strong spin–electric coupling.
physicsworld.com: news Latest news from physicsworld.com
- Physicists beat Lorentz reciprocity for microwave...on February 22, 2018 at 2:27 pm
New device could boost telecommunications and be adapted for photonics
- Japan’s SuperKEKB set for first particle...on February 21, 2018 at 2:45 pm
Revamped accelerator will soon be smashing electrons and positrons together
- Wood-based 'supermaterial' is stronger and...by Sam Jarman on February 21, 2018 at 2:10 pm
New material is made by compressing treated wood
- Three photons bind together to make a...on February 20, 2018 at 4:06 pm
Technique could be used to create quantum-information systems
- Nuclear excitation by electron capture seen at...on February 20, 2018 at 1:55 pm
Breakthrough could lead to new type of energy source
- Pistachio trees 'talk' to their neighbours,...by Philip Ball on February 19, 2018 at 3:43 pm
Ising model could account for nut production of pistachio orchards
- US National Science Foundation clamps down on...by Peter Gwynne on February 15, 2018 at 11:57 am
Agency will now require every grantee organization to report cases of sexual harassment
- Simulations reveal how sharp boundaries endure in...on February 14, 2018 at 9:22 am
Research could help explain how cells organize into complex living systems
- TRAPPIST-1 exoplanets could harbour significant...on February 13, 2018 at 9:29 am
All seven worlds circling a red dwarf could be habitable, say astronomers
- Heaviest element could have fascinating atomic...on February 12, 2018 at 9:27 am
Simulations suggest oganesson has extremely smooth electron and nucleon distributions
Matter & Energy News -- ScienceDaily Detectors and electronics. Learn about every sort of detector, radar system and more from leading research institutes around the world.
- Putting honeybee hives on solar parks could boost...on October 18, 2021 at 9:22 pm
The value of UK agriculture could be boosted by millions of pounds a year if thousands of honeybee hives were deployed on solar parks across the country, a new study reveals. However, scientists caution that the benefits of managing solar parks for wild pollinators over honeybees should be prioritized where appropriate and should be assessed on a site by site basis.
- Solar energy can be cheap and reliable across...on October 18, 2021 at 8:32 pm
How much will solar power really cost in China in the coming decades, including the challenges its inherent variability poses to the grid? Researchers have found that solar energy could provide 43.2% of China's electricity demands in 2060 at less than two-and-a-half U.S. cents per kilowatt-hour.
- Breakthrough proof clears path for quantum AIon October 18, 2021 at 7:42 pm
Convolutional neural networks running on quantum computers have generated significant buzz for their potential to analyze quantum data better than classical computers can.
- Four-legged swarm robotson October 18, 2021 at 5:03 pm
Engineers have built multi-legged robots capable of maneuvering in challenging environments and accomplishing difficult tasks collectively, mimicking their natural-world counterparts.
- Uncovering the secrets of ultra-low frequency...on October 18, 2021 at 3:25 pm
New methods of detecting ultra-low frequency gravitational waves can be combined with other, less sensitive measurements to deliver fresh insights into the early development of our universe, according to researchers.
- How the brain navigates citieson October 18, 2021 at 3:25 pm
A study suggests our brains are not optimized to calculate the shortest possible route when navigating on foot. Instead, pedestrians use vector-based navigation, choosing 'pointiest' paths that point most directly toward their destination, even if the routes are longer.
- Optimum pressure to improve the performance of...on October 18, 2021 at 3:25 pm
A team of materials scientists and chemists has determined the proper stack pressure that lithium metal batteries, or LMBs, need to be subjected to during battery operation in order to produce optimal performance.
- Scientists discover method to boost energy...on October 18, 2021 at 2:59 pm
The variety of humble algae that cover the surface of ponds and seas could hold the key to boosting the efficiency of artificial photosynthesis, allowing scientists to produce more energy and lower waste in the process. A study showed how encasing algae protein in liquid droplets can dramatically enhance the algae's light-harvesting and energy-conversion properties by up to three times. This energy is produced as the algae undergoes photosynthesis, which is the process used by plants, algae and […]
- Ultrafast magnetism: heating magnets, freezing...on October 15, 2021 at 10:42 pm
Magnetic solids can be demagnetized quickly with a short laser pulse, and there are already so-called HAMR (Heat Assisted Magnetic Recording) memories on the market that function according to this principle. However, the microscopic mechanisms of ultrafast demagnetization remain unclear. Now, a team has developed a new method at BESSY II to quantify one of these mechanisms and applied it to the rare-earth element Gadolinium, whose magnetic properties are caused by electrons on both the 4f and […]
- How bacteria create a piggy bank for the lean...on October 15, 2021 at 5:32 pm
Bacteria can store extra resources for the lean times. It's a bit like keeping a piggy bank or carrying a backup battery pack. One important reserve is known as cyanophycin granules, which were first noticed by an Italian scientist about 150 years ago. He saw big, dark splotches in the cells of the blue-green algae (cyanobacteria) he was studying without understanding either what they were or their purpose. Since then, scientists have realized that cyanophycin was made of a natural green […]