//www.koonmotors.com/news/matter_energy/albert_einstein/ Albert Einstein in the News. Research institutes have been testing Albert Einstein's theory of special relativity and general relativity. Was Albert Einstein right? en-us Wed, 06 Sep 2023 14:51:41 EDT Wed, 06 Sep 2023 14:51:41 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/matter_energy/albert_einstein/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/07/230713141952.htm One of the most basic assumptions of fundamental physics is that the different properties of mass -- weight, inertia and gravitation -- always remain the same in relation to each other. Although all measurements to date confirm the equivalence principle, quantum theory postulates that there should be a violation. This inconsistency between Einstein's gravitational theory and modern quantum theory is the reason why ever more precise tests of the equivalence principle are particularly important. A team has now succeeded in proving with 100 times greater accuracy that passive and active gravitational mass are always equivalent -- regardless of the particular composition of the respective masses. Thu, 13 Jul 2023 14:19:52 EDT //www.koonmotors.com/releases/2023/07/230713141952.htm //www.koonmotors.com/releases/2023/06/230622120924.htm The cosmos is a unique laboratory for testing the laws of physics, in particular those of Euler and Einstein. Euler described the movements of celestial objects, while Einstein described the way in which celestial objects distort the Universe. Since the discovery of dark matter and the acceleration of the Universe's expansion, the validity of their equations has been put to the test: are they capable of explaining these mysterious phenomena? A team has developed the first method to find out. It considers a never-before-used measure: time distortion. Thu, 22 Jun 2023 12:09:24 EDT //www.koonmotors.com/releases/2023/06/230622120924.htm //www.koonmotors.com/releases/2023/05/230517122129.htm The connection between quantum physics and the theory of relativity is extremely hard to study. But now, scientists have set up a model system, which can help: Quantum particles can be tuned in such a way that the results can be translated into information about other systems, which are much harder to observe. This kind of 'quantum simulator' works very well and can lead to new insights about the nature of relativity and quantum physics. Wed, 17 May 2023 12:21:29 EDT //www.koonmotors.com/releases/2023/05/230517122129.htm //www.koonmotors.com/releases/2022/12/221209135545.htm In a laboratory experiment, researchers have succeeded in realizing an effective spacetime that can be manipulated. In their research on ultracold quantum gases, they were able to simulate an entire family of curved universes to investigate different cosmological scenarios and compare them with the predictions of a quantum field theoretical model. Fri, 09 Dec 2022 13:55:45 EST //www.koonmotors.com/releases/2022/12/221209135545.htm //www.koonmotors.com/releases/2022/11/221130114712.htm Scientists have developed a quantum experiment that allows them to study the dynamics, or behavior, of a special kind of theoretical wormhole. Wed, 30 Nov 2022 11:47:12 EST //www.koonmotors.com/releases/2022/11/221130114712.htm //www.koonmotors.com/releases/2022/11/221104113513.htm Scientists have reconstructed gravity to find a more robust way of understanding the cosmos. Fri, 04 Nov 2022 11:35:13 EDT //www.koonmotors.com/releases/2022/11/221104113513.htm //www.koonmotors.com/releases/2022/09/220929133431.htm Physicists are using small wheeled robots to better understand these indirect mechanical interactions, how they play a role in active matter, and how we can control them. Thu, 29 Sep 2022 13:34:31 EDT //www.koonmotors.com/releases/2022/09/220929133431.htm //www.koonmotors.com/releases/2022/09/220914102259.htm Researchers present the most precise test yet of the weak equivalence principle, a key component of the theory of general relativity. The report describes the final results from the MICROSCOPE mission, which tested the principle by measuring accelerations of free-falling objects in a satellite orbiting Earth. Wed, 14 Sep 2022 10:22:59 EDT //www.koonmotors.com/releases/2022/09/220914102259.htm //www.koonmotors.com/releases/2022/08/220812130806.htm Solving Einstein's equations by using quantities that apply across all space and time coordinates could enable physicists to eventually find their 'white whale': a quantum theory of gravity. Fri, 12 Aug 2022 13:08:06 EDT //www.koonmotors.com/releases/2022/08/220812130806.htm //www.koonmotors.com/releases/2022/07/220713201358.htm 新的研究维护Stokes-Ei的有效性nstein equation, one of Albert Einstein's most famous equations, as it relates to biology. The research will help scientists better understand antibiotic resistance and the mechanical properties of cancer cells. Wed, 13 Jul 2022 20:13:58 EDT //www.koonmotors.com/releases/2022/07/220713201358.htm //www.koonmotors.com/releases/2022/07/220712102703.htm Researchers have redetermined the gravitational constant G using a new measurement technique. Although there is still a large degree of uncertainty regarding this value, the new method offers great potential for testing one of the most fundamental laws of nature. Tue, 12 Jul 2022 10:27:03 EDT //www.koonmotors.com/releases/2022/07/220712102703.htm //www.koonmotors.com/releases/2022/06/220607120927.htm Clouds of ultralight particles can form around rotating black holes. A team of physicists now show that these clouds would leave a characteristic imprint on the gravitational waves emitted by binary black holes. Tue, 07 Jun 2022 12:09:27 EDT //www.koonmotors.com/releases/2022/06/220607120927.htm //www.koonmotors.com/releases/2022/05/220509100938.htm A major hurdle for work at the forefront of fundamental physics is the inability to test cutting-edge theories in a laboratory setting. But a recent discovery opens the door for scientists to see ideas in action that were previously only understood in theory or represented in science fiction. Mon, 09 May 2022 10:09:38 EDT //www.koonmotors.com/releases/2022/05/220509100938.htm //www.koonmotors.com/releases/2022/04/220408083856.htm Physicists have developed the most sensitive method ever for measuring the potential energy of an atom (within a hundredth of a decillionth of a joule -- or 10-35 joule), and used it to validate one of the most tested theories in physics -- quantum electrodynamics (QED). Fri, 08 Apr 2022 08:38:56 EDT //www.koonmotors.com/releases/2022/04/220408083856.htm //www.koonmotors.com/releases/2022/03/220317094755.htm Researchers propose using the variations in distance between the Earth and the Moon, which can be measured with a precision of less than a centimeter, as a new gravitational wave detector within a frequency range that current devices cannot detect. The research could pave the way for the detection of signals from the early universe. Thu, 17 Mar 2022 09:47:55 EDT //www.koonmotors.com/releases/2022/03/220317094755.htm //www.koonmotors.com/releases/2022/03/220309090800.htm How can Einstein's theory of gravity be unified with quantum mechanics? It is a challenge that could give us deep insights into phenomena such as black holes and the birth of the universe. Now, a new article presents results that cast new light on important challenges in understanding quantum gravity. Wed, 09 Mar 2022 09:08:00 EST //www.koonmotors.com/releases/2022/03/220309090800.htm //www.koonmotors.com/releases/2022/03/220303112014.htm Scientists provide the first simulation of neutron star collisions in extensions of general relativity relevant for cosmology, offering a new approach to test gravity. Thu, 03 Mar 2022 11:20:14 EST //www.koonmotors.com/releases/2022/03/220303112014.htm //www.koonmotors.com/releases/2022/02/220216112213.htm Physicists have measured Albert Einstein's theory of general relativity, or more specifically, the effect called time dilation, at the smallest scale ever, showing that two tiny atomic clocks, separated by just a millimeter or the width of a sharp pencil tip, tick at different rates. Wed, 16 Feb 2022 11:22:13 EST //www.koonmotors.com/releases/2022/02/220216112213.htm //www.koonmotors.com/releases/2022/02/220210125823.htm New research has shown that future gravitational wave detections from space will be capable of finding new fundamental fields and potentially shed new light on unexplained aspects of the Universe. Thu, 10 Feb 2022 12:58:23 EST //www.koonmotors.com/releases/2022/02/220210125823.htm //www.koonmotors.com/releases/2022/02/220210114102.htm When light hits a material, electrons can be released from this material -- the photoelectric effect. Although this effect played a major role in the development of the quantum theory, it still holds a number of secrets: To date it has not been clear how quickly the electron is released after the photon is absorbed. Researchers have now been able to find an answer to this mystery with the aid of a COLTRIMS reaction microscope: The emission takes place lightning fast, namely within just a few attoseconds. Thu, 10 Feb 2022 11:41:02 EST //www.koonmotors.com/releases/2022/02/220210114102.htm //www.koonmotors.com/releases/2022/01/220105111441.htm As part of an experiment to measure -- to an extremely precise degree -- the charge-to-mass ratios of protons and antiprotons, researchers have found that, within the uncertainty of the experiment, matter and antimatter respond to gravity in the same way. Wed, 05 Jan 2022 11:14:41 EST //www.koonmotors.com/releases/2022/01/220105111441.htm //www.koonmotors.com/releases/2022/01/220104112233.htm Black holes really are giant fuzzballs, a new study says. The study attempts to put to rest the debate over Stephen Hawking's famous information paradox, the problem created by Hawking's conclusion that any data that enters a black hole can never leave. This conclusion accorded with the laws of thermodynamics, but opposed the fundamental laws of quantum mechanics. Tue, 04 Jan 2022 11:22:33 EST //www.koonmotors.com/releases/2022/01/220104112233.htm //www.koonmotors.com/releases/2021/12/211209142542.htm Researchers train a neural network to estimate -- in just a few seconds -- the precise characteristics of merging black holes based on their gravitational-wave emissions. The network determines the masses and spins of the black holes, where in the sky, at what angle, and how far away from Earth the merger took place. Thu, 09 Dec 2021 14:25:42 EST //www.koonmotors.com/releases/2021/12/211209142542.htm //www.koonmotors.com/releases/2021/12/211208110316.htm If researchers can detect Q-balls in gravitational waves, it could help explain why more matter than anti-matter was left over after the Big Bang. Wed, 08 Dec 2021 11:03:16 EST //www.koonmotors.com/releases/2021/12/211208110316.htm //www.koonmotors.com/releases/2021/11/211104140122.htm An enormous jet of particles emitted by the giant galaxy M87 can be observed astronomically in various wavelengths. Scientists have developed a theoretical model of the morphology of this jet using complex supercomputer calculations. The images from these calculations provide an unprecedented match with astronomical observations and confirm Einstein's theory of general relativity. Thu, 04 Nov 2021 14:01:22 EDT //www.koonmotors.com/releases/2021/11/211104140122.htm //www.koonmotors.com/releases/2021/10/211018112529.htm 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. Mon, 18 Oct 2021 11:25:29 EDT //www.koonmotors.com/releases/2021/10/211018112529.htm //www.koonmotors.com/releases/2021/09/210915135120.htm Dark energy, the mysterious force that causes the universe to accelerate, may have been responsible for unexpected results from the XENON1T experiment, deep below Italy's Apennine Mountains. Wed, 15 Sep 2021 13:51:20 EDT //www.koonmotors.com/releases/2021/09/210915135120.htm //www.koonmotors.com/releases/2021/07/210707160445.htm Researchers have used artificial intelligence to dramatically reduce the time it takes to process data coming from the Laser Interferometer Gravitational-Wave Observatory. Wed, 07 Jul 2021 16:04:45 EDT //www.koonmotors.com/releases/2021/07/210707160445.htm //www.koonmotors.com/releases/2021/06/210616113829.htm Small modeling errors may accumulate faster than previously expected when physicists combine multiple gravitational wave events (such as colliding black holes) to test Albert Einstein's theory of general relativity, suggest researchers. Wed, 16 Jun 2021 11:38:29 EDT //www.koonmotors.com/releases/2021/06/210616113829.htm //www.koonmotors.com/releases/2021/04/210406120738.htm POSTECH professor Junsuk Rho's research team demonstrates artificial control of elastic waves and underwater sounds applicable as stealth technology. Tue, 06 Apr 2021 12:07:38 EDT //www.koonmotors.com/releases/2021/04/210406120738.htm //www.koonmotors.com/releases/2021/03/210310122602.htm Researchers have succeeded in measuring the gravitational field of a gold sphere, just 2 mm in diameter, using a highly sensitive pendulum - and thus the smallest gravitational force. The experiment opens up new possibilities for testing the laws of gravity on previously unattained small scales. Wed, 10 Mar 2021 12:26:02 EST //www.koonmotors.com/releases/2021/03/210310122602.htm //www.koonmotors.com/releases/2021/02/210217151017.htm 科学家们利用尖端研究泉tum computation and quantum technology to pioneer a radical new approach to determining how our Universe works at its most fundamental level. Wed, 17 Feb 2021 15:10:17 EST //www.koonmotors.com/releases/2021/02/210217151017.htm //www.koonmotors.com/releases/2021/02/210210133352.htm Researchers have used well-established cosmological observations to place tighter constraints on the quadratic model of the Generalized Uncertainty Principle, while discrediting the linear model. Wed, 10 Feb 2021 13:33:52 EST //www.koonmotors.com/releases/2021/02/210210133352.htm //www.koonmotors.com/releases/2021/01/210113100829.htm Physicists have found a new way to extract energy from black holes by breaking and rejoining magnetic field lines near the event horizon. 结婚,2021年1月13日10:08:29 EST //www.koonmotors.com/releases/2021/01/210113100829.htm //www.koonmotors.com/releases/2021/01/210111125614.htm 科学家认为,行星像地球鲍勃a sea of gravitational waves that spread throughout the universe. Now, an international team has gotten closer than ever before to detecting those cosmic ripples. Mon, 11 Jan 2021 12:56:14 EST //www.koonmotors.com/releases/2021/01/210111125614.htm //www.koonmotors.com/releases/2020/12/201208111547.htm Is gravity a quantum phenomenon? That has been one of the big outstanding questions in physics for decades. Physicists have proposed an experiment that could settle the issue. However, it requires studying two very large entangled quantum systems in freefall. Researchers now present a way to reduce background noise to make this experiment more manageable. Tue, 08 Dec 2020 11:15:47 EST //www.koonmotors.com/releases/2020/12/201208111547.htm //www.koonmotors.com/releases/2020/11/201123100943.htm Researchers have developed a new theory for observing a quantum vacuum that could lead to new insights into the behaviour of black holes. Mon, 23 Nov 2020 10:09:43 EST //www.koonmotors.com/releases/2020/11/201123100943.htm //www.koonmotors.com/releases/2020/10/201028110627.htm New research proves theoretically that the Weak Equivalence Principle can be violated by quantum particles in gravitational waves - the ripples in spacetime caused by colossal events such as merging black holes. Wed, 28 Oct 2020 11:06:27 EDT //www.koonmotors.com/releases/2020/10/201028110627.htm //www.koonmotors.com/releases/2020/10/201023082010.htm Cool research story with connections to atomic clocks, Einstein and quantum mechanics. The research shows the 'spooky' interference that can impact even the most sophisticated clocks. Fri, 23 Oct 2020 08:20:10 EDT //www.koonmotors.com/releases/2020/10/201023082010.htm //www.koonmotors.com/releases/2020/10/201014160510.htm Researchers have proposed a novel method for finding dark matter, the cosmos' mystery material that has eluded detection for decades. Wed, 14 Oct 2020 16:05:10 EDT //www.koonmotors.com/releases/2020/10/201014160510.htm //www.koonmotors.com/releases/2020/10/201009162417.htm Scientists have discovered the fastest possible speed of sound. Fri, 09 Oct 2020 16:24:17 EDT //www.koonmotors.com/releases/2020/10/201009162417.htm //www.koonmotors.com/releases/2020/10/201008104241.htm Researchers have measured, with unprecedented accuracy, the gravitational redshift of the Sun, a change in frequency of the lines in the solar spectrum which is produced when the light escapes from the gravitational field of the Sun on its way to Earth. Thu, 08 Oct 2020 10:42:41 EDT //www.koonmotors.com/releases/2020/10/201008104241.htm //www.koonmotors.com/releases/2020/07/200701100006.htm Tiny diamond crystals could be used as an incredibly sensitive and small gravitational detector capable of measuring gravitational waves, suggests new research. Wed, 01 Jul 2020 10:00:06 EDT //www.koonmotors.com/releases/2020/07/200701100006.htm //www.koonmotors.com/releases/2020/06/200617102443.htm “bose - einstein”冷凝物常常被描述为the fifth state of matter: At extremely low temperatures, gas atoms behave like a single particle. The exact properties of these systems are notoriously difficult to study. Physicists have now proposed a new theory to describe these quantum systems more effectively and comprehensively. Wed, 17 Jun 2020 10:24:43 EDT //www.koonmotors.com/releases/2020/06/200617102443.htm //www.koonmotors.com/releases/2020/05/200507131317.htm Measuring tiny differences in mass between different quantum states provides new insights into heavy atoms. Thu, 07 May 2020 13:13:17 EDT //www.koonmotors.com/releases/2020/05/200507131317.htm //www.koonmotors.com/releases/2020/04/200416072638.htm Observations have revealed for the first time that a star orbiting the supermassive black hole at the center of the Milky Way moves just as predicted by Einstein's general theory of relativity. Its orbit is shaped like a rosette and not like an ellipse as predicted by Newton's theory of gravity. This long-sought-after result was made possible by increasingly precise measurements over nearly 30 years. Thu, 16 Apr 2020 07:26:38 EDT //www.koonmotors.com/releases/2020/04/200416072638.htm //www.koonmotors.com/releases/2020/04/200409100338.htm In another verification of the validity of Einstein's theory of general relativity scientists have used two finely tuned optical lattice clocks to make new ultra-precise measurements of the time dilation effect predicted by Einstein's theory of general relativity. Thu, 09 Apr 2020 10:03:38 EDT //www.koonmotors.com/releases/2020/04/200409100338.htm //www.koonmotors.com/releases/2020/04/200409093957.htm Dark matter is thought to exist as 'clumps' of tiny particles that pass through the earth, temporarily perturbing some fundamental constants. A new article sets out two novel methods for measuring these tiny changes and thus detecting dark matter. Both use already existing experimental infrastructure. Thu, 09 Apr 2020 09:39:57 EDT //www.koonmotors.com/releases/2020/04/200409093957.htm //www.koonmotors.com/releases/2020/03/200331130043.htm New measurements confirm, to the highest energies yet explored, that the laws of physics hold no matter where you are or how fast you're moving. Tue, 31 Mar 2020 13:00:43 EDT //www.koonmotors.com/releases/2020/03/200331130043.htm //www.koonmotors.com/releases/2020/03/200318143757.htm A team of researchers have published new calculations that predict a striking and intricate substructure within black hole images from extreme gravitational light bending. Wed, 18 Mar 2020 14:37:57 EDT //www.koonmotors.com/releases/2020/03/200318143757.htm //www.koonmotors.com/releases/2020/02/200214134729.htm Many physicists have attempted to explain the problem of quantum superposition, as exemplified by Schrödinger's cat. Now a French theoretical physicist proposes a novel possible solution, which combines two different approaches and brings in universal gravitation. Fri, 14 Feb 2020 13:47:29 EST //www.koonmotors.com/releases/2020/02/200214134729.htm //www.koonmotors.com/releases/2019/10/191015092242.htm More accurate clocks and sensors may result from a recently proposed experiment, linking an Einstein-devised paradox to quantum mechanics. A physicist said the international collaboration aimed to test Einstein's twin paradox using quantum particles in a 'superposition' state. Tue, 15 Oct 2019 09:22:42 EDT //www.koonmotors.com/releases/2019/10/191015092242.htm //www.koonmotors.com/releases/2019/10/191002102750.htm According to quantum physics, energy can be 'borrowed' -- at least for some time. Energies lower than zero are possible, much like a bank account that can be overdrawn. There are, however, certain restrictions to that. Scientists have now shown that these restrictions are very fundamental properties of our universe and must be true for various possible quantum theories. Wed, 02 Oct 2019 10:27:50 EDT //www.koonmotors.com/releases/2019/10/191002102750.htm //www.koonmotors.com/releases/2019/09/190918124529.htm Researchers have announced a prototype for a laser at the heart of the first space-based gravitational wave observatory, known as the Laser Interferometer Space Antenna (LISA) mission. Wed, 18 Sep 2019 12:45:29 EDT //www.koonmotors.com/releases/2019/09/190918124529.htm //www.koonmotors.com/releases/2019/09/190916101858.htm Researchers experimentally determined a property of cadmium called the magic wavelength which is considered essential for the development of the most accurate clocks ever envisaged. The researchers hope this may permit simple and robust atomic clocks so accurate they could be used to improve our understanding of current theories and even test for new physics. Mon, 16 Sep 2019 10:18:58 EDT //www.koonmotors.com/releases/2019/09/190916101858.htm //www.koonmotors.com/releases/2019/09/190911121948.htm Physicists have 'heard' the ringing of an infant black hole for the first time, and found that the pattern of this ringing does, in fact, predict the black hole's mass and spin -- more evidence that Einstein was right all along. Wed, 11 Sep 2019 12:19:48 EDT //www.koonmotors.com/releases/2019/09/190911121948.htm //www.koonmotors.com/releases/2019/08/190829150734.htm A physicist has proposed a new approach to solving one of the biggest theoretical problems in physics: the cosmological constant. Thu, 29 Aug 2019 15:07:34 EDT //www.koonmotors.com/releases/2019/08/190829150734.htm //www.koonmotors.com/releases/2019/08/190826122010.htm Researchers say they have discovered 'a new kind of quantum time order'. The discovery arose from an experiment the team designed to bring together elements of the two big -- but contradictory -- physics theories developed in the past century. Mon, 26 Aug 2019 12:20:10 EDT //www.koonmotors.com/releases/2019/08/190826122010.htm //www.koonmotors.com/releases/2019/08/190819110000.htm An experiment to test a popular theory of dark energy has found no evidence of new forces, placing strong constraints on related theories. Mon, 19 Aug 2019 11:00:00 EDT //www.koonmotors.com/releases/2019/08/190819110000.htm //www.koonmotors.com/releases/2019/06/190619103151.htm Using holography, researchers have found when gravity is combined with quantum mechanics, symmetry is not possible. Wed, 19 Jun 2019 10:31:51 EDT //www.koonmotors.com/releases/2019/06/190619103151.htm