Most Excellent Physics Community.
- A question for the Physics communities
I think I need to rephrase this question. I'll post again in a few days.
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... Hear me out, okay?
Back in 2000 I took my first solo, out of state trip, to meet an online friend. When I got off the bus, she greeted me, and let me know that we had to go stop by her friends house on the way back.
She was Wiccan and needed some Spiritual guidance because the night before she saw a black portal open up in the corner of her room that was giving her really bad vibes.
It wasn't my thing, but I never discounted it. Maybe it was real, and if nothing else it's just how her mind is rationalizing things.
But I guess my question is: Does the Scientific Method rule out the possibility that a "real" portal appeared in her room?
Taking wave function probability into account and the absense of data from the room, is it fair to say that the scientific method doesn't rule out the black portal being real?
Looking for black and white answers if possible, but I'd also love to hear your reasoning~
- Are the theories of Relativity rational or just more pseudoscience?
For those that have taken the blue pill, here is an introduction to the thinking that comes from taking the red pill. Which version makes most sense is up to you to decide. But don't automatically jump to the conclusion that your Einstein version is all that solid as a reasonable way to understand reality. Its clearly not, well that's the only possible conclusion that Dave and the AI Chatbot came to. See if you can find any errors in their logic if you believe that the Physics of Einstein is rock solid or even rational. The series of 5 ebooks is available for 99 cents on Amazon, and free on other book distributors until September 2024. The subjects covered are SR, GR, Spacetime, Speed of Light e=mc2, and some of the most famous experiments, all of which are found to be nonsense. Google "Dave vs Hal 9001"
- A question about Gravity
Is it possible to determine the percentage of the gravitational force at a specified distance using only the geometry of the planet?
Example: The ISS at ~420km altitude "weighs" about 90% of what it would on the Earth's surface.
Is there an equation using only geometrical values that would give you this info?
Edit: Answered!
- Do Black Holes have Singularities?
There is no proof that black holes contain singularities when they are generated by real physical bodies. Roger Penrose claimed sixty years ago that trapped surfaces inevitably lead to light rays of finite affine length (FALL's). Penrose and Stephen Hawking then asserted that these must end in actual singularities. When they could not prove this they decreed it to be self evident. It is shown that there are counterexamples through every point in the Kerr metric. These are asymptotic to at least one event horizon and do not end in singularities.
- phys.org Visualizing the mysterious dance: Quantum entanglement of photons captured in real-time
Researchers at the University of Ottawa, in collaboration with Danilo Zia and Fabio Sciarrino from the Sapienza University of Rome, recently demonstrated a novel technique that allows the visualization of the wave function of two entangled photons, the elementary particles that constitute light, in ...
- Dark Energy hasn't been in the news lately, but the heat is still on.
Dark Energy hasn't been in the news lately, but the heat is still on.
Check out the YouTube "Dark Energy - A String Theory Way" at https://www.youtube.com/watch?v=epk-SMXbu1c and tell me what's wrong with it.
@arxiv\_physics @physics@lemmy.ml @LHCbPhysics @Dianna @physics@scipost.social #physics #astronomy #astrophysics
- Why can't this work:
Why can't this work:
NASA uses plutonium-238 to generate electricity for satellites in its deep space missions. Using this general approach, can a car battery be continuously charged and that battery used to power a car? Sure, new tech would have to be developed, but is this idea impossible? @arxiv\_physics @physics@lemmy.ml @LHCbPhysics @dianna @physics@scipost.social #physics
- Strange new phase of matter created in quantum computer acts like it has two time dimensions - What happens when you mix a time crystal and a quasy crystal?phys.org Strange new phase of matter created in quantum computer acts like it has two time dimensions
By shining a laser pulse sequence inspired by the Fibonacci numbers at atoms inside a quantum computer, physicists have created a remarkable, never-before-seen phase of matter. The phase has the benefits of two time dimensions despite there still being only one singular flow of time, the physicists ...
- Time isn't simply just another dimension - A short (or quick?) walk to Minkowski space, and its peculiaritiesbigthink.com Time isn't simply just another dimension
We live in a four-dimensional Universe, where matter and energy curve the fabric of spacetime. But time sure is different from space!
- Controversy Continues Over Whether Hot Water Freezes Faster Than Cold - The Mpemba Effectwww.quantamagazine.org Controversy Continues Over Whether Hot Water Freezes Faster Than Cold
Decades after a Tanzanian teenager initiated study of the “Mpemba effect,” the effort to confirm or refute it is leading physicists toward new theories about how substances relax to equilibrium.
- How Electricity Actually Works - Veritasium
Derek did a retake of his controversial first video on the topic.
- phys.org 1,000-light-year wide bubble surrounding Earth is source of all nearby, young stars
The Earth sits in a 1,000-light-year-wide void surrounded by thousands of young stars—but how did those stars form?
Brief introduction to Causal Set Theory.
- www.symmetrymagazine.org LHCb discovers longest-lived exotic matter yet
The newly discovered tetraquark provides a unique window into the interactions of the particles that make up atoms.
- My favourite 6 educational physics games.
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Special relativity: Velocity Raptor, a relativistic puzzle browser game
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Quantum mechanics: Quantum Game with Photons, a quantum mechanical puzzle browser game
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Newtonian mechanics: Armadillo Run, a Newtonian mechanics puzzle game
Bonus games, not educational, but one can build physics intuition with them: Portal games (including the Flash version), Red Remover, Tagpro and Transformice, and honestly any realistic vehicle sim, etc...
If you haven't played the games above I recommend you do, half are free.
What are some other cool physics games you guys know of, whether simple or in-depth, big or small, educational or not?
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- How Inevitable Is the Concept of Numbers?writings.stephenwolfram.com How Inevitable Is the Concept of Numbers?—Stephen Wolfram Writings
Stephen Wolfram considers if numbers are actually required, the use of symbolics and the potential for the growing role of computational irreducibility.
- Question about wave/particles interacting
Does it make sense to ask: How hard does a photon hit an object?
Does the waviness of photons make that a dumb question? If it does then what is a more correct way of conceptualizing the interaction of a photon with, for example, a light receptor? Or does the analogy in my head of a ball hitting a wall fairly represent the behavior of a photon at the moment of impact?
- ‘Last Hope’ Experiment Finds Evidence for Unknown Particles
We are near to new physics.
- home.cern Intriguing new result from the LHCb experiment at CERN
Today the LHCb experiment at CERN announced new results which, if confirmed, would suggest hints of a violation of the Standard Model of particle physics. The results focus on the potential violation of lepton flavour universality and were announced at the Moriond conference on electroweak interacti...
- Rewriting quantum theories without causality.www.quantamagazine.org Quantum Mischief Rewrites the Laws of Cause and Effect | Quanta Magazine
Spurred on by quantum experiments that scramble the ordering of causes and their effects, some physicists are figuring out how to abandon causality altogether.
- www.zmescience.com What is Special Relativity: A Guide to Spacetime, Time Dilation and Length Contraction
Einstein's theory of special relativity would revolutionise the field of physics upon its introduction. This is the first part of the ZME Science guide to that revolutionary theory. Einstein's theory of special relativity would revolutionise the field of physics upon its introduction. This is the fi...
- phys.org Merging boson stars could explain massive black hole collision and prove existence of dark matter
An international team of scientists led by the Galician Institute of High Energy Physics (IGFAE) and the University of Aveiro shows that the heaviest black hole collision ever observed, produced by the gravitational-wave GW190521, might actually be something even more mysterious: the merger of two b...
An international team of scientists led by the Galician Institute of High Energy Physics (IGFAE) and the University of Aveiro shows that the heaviest black hole collision ever observed, produced by the gravitational-wave GW190521, might actually be something even more mysterious: the merger of two boson stars.
- www.inverse.com Study reveals the source of one of the weirdest particles in the universe
Scientists tracked down the possible source of high-energy particles neutrinos, and it came from a star being shredded by a black hole.
"Astrophysicists have long theorized that tidal disruptions could produce high-energy neutrinos, but this is the first time we've actually been able to connect them with observational evidence"
- Series: Exploring The Quantum World.arstechnica.com Exploring the quantum world | Series | Ars Technica
Serving the Technologist for more than a decade. IT news, reviews, and analysis.
Six part series on Quantum.
- ATLAS experiment finds evidence of a rare Higgs boson decay to two leptons and a photonatlas.cern ATLAS finds evidence of a rare Higgs boson Dalitz decay to two leptons and a photon
Since the discovery of the Higgs boson in 2012, scientists in the ATLAS and CMS Collaborations at the LHC have been hard at work characterising its properties, and hunting down all of the diverse ways in which this ephemeral particle can decay. From the copious but experimentally challenging decay t...
