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watch this video about the theory of everything (help our channel grow by subscribing):
https://youtu.be/i43rL0kdZD0
https://youtu.be/i43rL0kdZD0
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На Большом адронном коллайдере обнаружено поведение частиц, которое не укладывается в рамки Стандартной модели – теории, многие десятилетия успешно прогнозировавшей результат любого эксперимента с элементарными частицами. Вероятность ошибки пока не исключена, но статистика уже заставляет физиков насторожиться и искать объяснения.
Речь идёт о распаде b-мезона.
Речь идёт о распаде b-мезона.
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The report of the German Physical Society on the Karlsruhe Physics Course is the first attack on the freedom of teaching, which comes directly from physics and not from religious fundamentalists. Why well-trained, supposedly intelligent physicists publicise such nonsense is a mystery to me. What frightens me is the fact that there has been no rebellion within the GPS against this incompetent, malicious and damaging action.
https://www.academia.edu/37320359/Expert_report_on_the_Karlsruhe_Physics_Course_an_analysis
https://www.academia.edu/37320359/Expert_report_on_the_Karlsruhe_Physics_Course_an_analysis
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In hydrostatics, we’ve discussed surface tension and capillarity. In this unit, we’ll discuss viscosity in fluids and how terminal velocity is achieved under viscosity. We’ll perform a simple experiment to demonstrates viscosity as well as forces that contribute to the effect. https://www.allcalculation.com/2018/08/viscosity-and-terminal-velocity.html #physics
Viscosity and terminal velocity.
allcalculation.com
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Ahh the wonders of modern material science in action. Something theory only a few years ago a reality now.
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The impossibly stubborn question at the heart of quantum mechanics
/ by Jim Baggott / August 2, 2018 /
Everybody knows by now that quantum mechanics is an extraordinarily
successful scientific theory, on which much of our modern,
tech-obsessed lifestyles depend. It is also completely mad.
Although the theory quite obviously works, we’re left to puzzle over what
we think it’s telling us, with all its ghosts and phantoms; its cats that are
at once both alive and dead; its collapsing wavefunctions; and its seemingly
“spooky” goings-on.
It leaves us with a rather desperate desire to lie down quietly in a darkened room.. . .
https://www.prospectmagazine.co.uk/science-and-technology/the-impossibly-stubborn-question-at-the-heart-of-quantum-mechanics
============
/ by Jim Baggott / August 2, 2018 /
Everybody knows by now that quantum mechanics is an extraordinarily
successful scientific theory, on which much of our modern,
tech-obsessed lifestyles depend. It is also completely mad.
Although the theory quite obviously works, we’re left to puzzle over what
we think it’s telling us, with all its ghosts and phantoms; its cats that are
at once both alive and dead; its collapsing wavefunctions; and its seemingly
“spooky” goings-on.
It leaves us with a rather desperate desire to lie down quietly in a darkened room.. . .
https://www.prospectmagazine.co.uk/science-and-technology/the-impossibly-stubborn-question-at-the-heart-of-quantum-mechanics
============
The impossibly stubborn question at the heart of quantum mechanics
prospectmagazine.co.uk
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The gravitational constant, G, which governs the strength of gravitational interactions, is hard to measure accurately. Two independent determinations of G have been made that have the smallest uncertainties so far.
Li et al. (2018) Measurements of the gravitational constant using two independent methods: https://www.nature.com/articles/s41586-018-0431-5
Li et al. (2018) Measurements of the gravitational constant using two independent methods: https://www.nature.com/articles/s41586-018-0431-5
Gravity measured with record precision
nature.com
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Basics: where do particle names come from?
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Astronomers obtained the most detailed anatomy chart of a monster galaxy located 12.4 billion light-years away. Using the Atacama Large Millimeter/submillimeter Array (ALMA), the team revealed that the molecular clouds in the galaxy are highly unstable, which leads to runaway star formation.
[...]
Our analysis of the molecular gas mass per unit area suggests that the starburst disk is gravitationally unstable, which implies that the self-gravity of the gas is stronger than the differential rotation of the disk and the internal pressure due to stellar-radiation feedback. As a result of the gravitational instability in the disk, the molecular gas would be consumed by star formation on a timescale of 100 million years, which is comparable to gas depletion times in merging starburst galaxies.
Tadaki et al. (2018) The gravitationally unstable gas disk of a starburst galaxy 12 billion years ago*_: https://www.nature.com/articles/s41586-018-0443-1
[...]
Our analysis of the molecular gas mass per unit area suggests that the starburst disk is gravitationally unstable, which implies that the self-gravity of the gas is stronger than the differential rotation of the disk and the internal pressure due to stellar-radiation feedback. As a result of the gravitational instability in the disk, the molecular gas would be consumed by star formation on a timescale of 100 million years, which is comparable to gas depletion times in merging starburst galaxies.
Tadaki et al. (2018) The gravitationally unstable gas disk of a starburst galaxy 12 billion years ago*_: https://www.nature.com/articles/s41586-018-0443-1
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