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Wikipedia: 97% of all articles lead to Philosophy
  • I personally enjoy philosophy of physics. I also learned I’m a constructive empiricist when it comes to quantum physics.

  • Does anyone else make Jedi force gestures before walking through automatic doors at a grocery store?
  • Wait, there are people who don’t? J/k but I like to pretend to kick the air as if I’m kicking a door open/down. I get looks, and I’m okay with that.

  • “Nothing” doesn’t exist. Instead, there is “quantum foam”
  • Consider this fact, some light waves like radio are large enough that a lot of matter is essentially invisible to their propagation; the radio waves just pass right by without any interactions. This becomes a similar problem when we try and measure such small quantum phenomena like zero-point energy. The quantum energy could be so small that they're invisible to our detectors, but are in fact still there - the two scales simple cannot interact in a measurable way. So, there'd like still be some quantum energy, just less and less until our detectors could not interact with the incredibly small quanta for measurement.

  • Blinken delivers message of US support to Kyiv as thousands flee Kharkiv region
  • This is the only war in my life that I fully support. Ukraine needs full support and the consequences of losing are extremely costly to all who hate fascism.

  • Turning Your Lightsaber Off | The Complete Saga
  • Thank you for sharing this video, turning on my light-saber and allowing me the high-ground.

  • Removed
    This journalist that made the compilation of the "This is a danger to our democracy" videos is being sued by the DOJ
  • Tried looking up some news on this - anyone have a reliable link?

  • Leaked images tease BYD's first electric pickup, coming to global markets this year
  • Hey, the 90s are calling and they want their paint job back!!

  • you don't need consumerism or mass media to be happy
  • I’d also add science - a subset of reading I suppose, but it can lead to experiments and theoretical models. I love it, costs me nothing (thanks Wiki supporters) and there’s still so much to learn and discover.

  • Republicans Who Do Not Regularly Watch Fox Are Less Likely to Back Trump | Survey data shows more of them believe he acted criminally.
  • This. NPR is even left leaning (I’m progressive), but Reuters and AP News, more often than not, seems the least bias - least.

  • My God loves you so much that he wants to kill you
  • This really nice girl back in high school, she was Mormon, asked, “do you believe in god?” I casually replied, “no.” She seemed so distraught, “it’s so sad you’re going to hell.” She went on to explain how and why. She seemed so committed but I always wondered if she really believed what she was saying, or was just following her religion’s teaching, like a method actor getting into their character. Perhaps she expected me to be scared or ask how to avert going to hell. I don’t know, but I disliked religion somehow more than I already did after that.

  • Physics
  • Just about anything with “black,” or, “dark,” in its name, be very skeptical. 🧐 But quantum entanglement, that’s the good stuff. Only GR’s SpaceTime mechanics comes close to being as crazy.

  • Fulton County DA Fani Willis case against Trump can continue if she or special prosecutor Wade remove themselves, judge rules
  • This, 100%. Even when a case seems won, don’t give your opponent anything to muddy the water. I hope she owns this mistake and tightens her process.

  • Philosophy
  • Except for philosophers of physics…they tend to look, relatively stable.

  • Scientists closer to finding quantum gravity theory after measuring gravity on microscopic level (research paper near the bottom)
  • No more impossible than any other precise quantum measurement. But that doesn’t have to be the goal post; indirectly making measurements, even on atoms worth of mass helps. Every time we change the setup, the mass, the temperature, the measurements, we can learn something new. Cast enough shadows from different angles and you’ll be able to model what’s casting the shadow. If you study condensed matter physics you’ll quickly learn there’s a lot to be learned and gained from indirect quantum measurements.

  • Astrophysical jet caught in a 'speed trap'
    phys.org Astrophysical jet caught in a 'speed trap'

    The science fiction author Arthur C. Clarke selected his own seven wonders of the world in a BBC television series in 1997. The only astronomical object he included was SS 433. It had attracted attention already in the late 1970s due to its X-ray emission and was later discovered to be at the center...

    Astrophysical jet caught in a 'speed trap'

    The video in this article brings me joy; it's just so good and fun to watch.

    2
    physics @lemm.ee Jeredin @lemm.ee
    Making a superconductor liquid–solid out of the vacuum with hundred-exatesla-strong magnetic fields
    phys.org Making a superconductor liquid–solid out of the vacuum with hundred-exatesla-strong magnetic fields

    The discovery of superconductivity more than a century ago has significantly changed our world.

    Making a superconductor liquid–solid out of the vacuum with hundred-exatesla-strong magnetic fields
    0
    Astrophysicist proposes a new theory of gravity without a conservation law
    phys.org Astrophysicist proposes a new theory of gravity without a conservation law

    The general theory of relativity is based on the concept of curved space–time. To describe how the energy and momentum of fields are distributed in space–time, as well as how they interact with the gravitational field, a special mathematical construct is used—the energy–momentum tensor. This is a ki...

    Astrophysicist proposes a new theory of gravity without a conservation law
    4
    Attempting to freeze matter under extreme pressure?

    I tried finding some research and found lots about freezing matter or putting it under extreme pressure, but not trying both.

    My thought experiment involved taking a small portion of ideal of matter (not sure what), artificially applying extreme pressure to it and than attempt to lower its temperature and if possible, apply even more pressure before trying to lower its temperature - taking it as low as possible under the highest pressure you could.

    I assumed there's likely to be a conflict between pressure - thus increasing vibration/wave properties of the material - and how it would be possible to reduce those energetic wave properties.

    Thanks for any insight.

    6
    Further evidence for quark-matter cores in massive neutron stars
    phys.org Further evidence for quark-matter cores in massive neutron stars

    Neutron-star cores contain matter at the highest densities reached in our present-day universe, with as much as two solar masses of matter compressed inside a sphere of 25 km in diameter. These astrophysical objects can indeed be thought of as giant atomic nuclei, with gravity compressing their core...

    Further evidence for quark-matter cores in massive neutron stars

    cross-posted from: https://lemm.ee/post/19422551

    > "In a new article published in Nature Communications, a team centered at the University of Helsinki provided a first-ever quantitative estimate for the likelihood of quark-matter cores inside massive neutron stars. They showed that, based on current astrophysical observations, quark matter is almost inevitable in the most massive neutron stars: a quantitative estimate that the team extracted placed the likelihood in the range of 80–90%."

    edit: found this research just today on nucleon liquid Vs quark liquid - very interesting and very much related to this original post.

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    Further evidence for quark-matter cores in massive neutron stars
    phys.org Further evidence for quark-matter cores in massive neutron stars

    Neutron-star cores contain matter at the highest densities reached in our present-day universe, with as much as two solar masses of matter compressed inside a sphere of 25 km in diameter. These astrophysical objects can indeed be thought of as giant atomic nuclei, with gravity compressing their core...

    Further evidence for quark-matter cores in massive neutron stars

    "In a new article published in Nature Communications, a team centered at the University of Helsinki provided a first-ever quantitative estimate for the likelihood of quark-matter cores inside massive neutron stars. They showed that, based on current astrophysical observations, quark matter is almost inevitable in the most massive neutron stars: a quantitative estimate that the team extracted placed the likelihood in the range of 80–90%."

    edit: removed my personal crackpot musings surrounding the subject. I do however, still suggest for those interested on the subject to study/brush up on quantum chromodynamics (focusing on the quark sea) and zero-point energy - never neglecting Relativity, of course. They're all very much connected and I believe the ZPE field will be a focus of continuous, real experimental science, with significant ramifications in cosmology.

    edit 2: Found this research just today on nucleon liquid Vs quark liquid - very interesting and very much related to this original post.

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    Research team models different signatures of a kilonova explosion simultaneously for the first time
    phys.org Research team models different signatures of a kilonova explosion simultaneously for the first time

    Neutron stars are the end products of massive stars and gather together a large part of the original stellar mass in a super-dense star with a diameter of only around ten kilometers. On 17 August 2017, researchers observed the manifold signatures of an explosive merger of two orbiting neutron stars ...

    Research team models different signatures of a kilonova explosion simultaneously for the first time
    0
    Potential energy created by same poles of magnets

    Found this very useful Youtube video about How do Magnets & Magnetic Fields Work? and within it I finally found someone willing to explain greater details about how same poles repel in laymen terms. The link above takes you to the section where the Presenter explains how (as I understand him) potential energy forms between the same poles and that energy ultimately causes the repulsion. I like his thermodynamic(?) description and haven't ever come across a better laymen explanation. That said, I was hoping to get some opinions about them. I've also read about the exchange of virtual photons but even that wasn't intuitively explained.

    Thank you for any additional insight.

    1
    Uncovering the missing precursors of hydrogen-poor supernovae
    www.sciencedaily.com Reaching for the (invisible) stars

    Supernovae -- stellar explosions as bright as an entire galaxy -- have fascinated us since time immemorial. Yet, there are more hydrogen-poor supernovae than astrophysicists can explain. Now, scientists may have found the missing precursor star population.

    Reaching for the (invisible) stars
    1
    Learning scientific nomenclature must be what it's like to process a foreign language into your native language...

    Language of any kind has always been hard for me, as most languages aren't intuitive and require your brain to be forced into learning often odd and unnecessary rules. My brain hates math, the only language I actually respect and a lot of science is built on complex math and non-intuitive nomenclature. I've been increasingly frustrated by it lately and just need to get this off my chest.

    I'm a non-professional and have been studying physics for a long time - Quantum Color Dynamics of late - and almost everything I read and listen to requires my brain to constantly process almost every bit of information from non-intuitive nomenclature to personal made ones. It's frustrating that the most challenging aspect of science (besides the complex math) isn't the concepts (I honestly don't find quantum mechanics to be weird) but rather the scientific community's self-imposed nomenclature made of scientist names or hodgepodge of words.

    Worst of all, I've only been able to process science like this as an adult because as a younger student, the subject matter seemed too hard because it was weighed down by both non-intuitive nomenclature and often teachers who barely understood the concepts they were teaching to the extent that they could translate that nomenclature beyond a book's presentation (obviously my own learning experience).

    Since I could remember I've loved science and wonder if I might have sought a career in physics, if not for frustrating hurdles like nomenclature, thrown on top of truly beautiful but complex subjects. At least I can enjoy it non-professionally - if only slowly, as I have to process its nomenclature.

    Thank you. And with that, back to my particle zoo...

    3
    i wish that i could wear hats 🧢
    5
    Interpreting the afterglow of a black hole's breakfast
    www.sciencedaily.com Interpreting the afterglow of a black hole's breakfast

    An entirely new way to probe how active black holes behave when they eat has been discovered by an international team of astronomers.

    Interpreting the afterglow of a black hole's breakfast
    0
    Astronomers discover galaxies have bipolar gas outflows reaching far into intergalactic space
    phys.org Astronomers discover galaxies have bipolar gas outflows reaching far into intergalactic space

    Astronomers have observed, for the first time in three dimensions, that gas from spiral galaxies is blown upward and downward at high velocity, far out of the galaxy. The observations confirm the prevailing theory of galaxy evolution that says that star-forming galaxies drive intergalactic winds by ...

    Astronomers discover galaxies have bipolar gas outflows reaching far into intergalactic space

    "Until now, observations have been difficult to interpret, but thanks to this study we can no longer ignore bipolar winds."

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    Emergent fields (theoretical physics)

    Curious non-professional here.

    Thought experiment that led me to the question: If we assume that at any given time there's an extreme level of EM and gravitational waves propagating through some point within a cosmic void (a seemingly homogeneous "vacuum"): do the transient emissions form any kind of emergent field?

    I understand the ever-present zero-point energy but that should be in absence of all else. I'm contemplating an emergent field formed by EM/gravitational traffic. Obviously this field is only as present or strong as the transient fields passing through this point under consideration.

    Thank you.

    6
    Do we live in a giant void? That could solve the puzzle of the universe's expansion, research suggests
    phys.org Do we live in a giant void? That could solve the puzzle of the universe's expansion, research suggests

    One of the biggest mysteries in cosmology is the rate at which the universe is expanding. This can be predicted using the standard model of cosmology, also known as Lambda-cold dark matter (ΛCDM). This model is based on detailed observations of the light left over from the Big Bang—the so-called cos...

    Do we live in a giant void? That could solve the puzzle of the universe's expansion, research suggests

    Since I've started studying cosmology as a non-professional, I've found myself rather convinced that there's so much dark matter but with a little "d" - since JWST has started giving us incredible data we've been finding more and more dense regions of dust, ice and gas where we've never thought, or previously seen before - but not new Dark Matter particles, regardless of claims of their influences. To be clear, both models should be studied and MOND continues to develop, however slowly it might be.

    As for those who've been keeping score between MOND vs DM (with a big "D") many have pointed to the recent wide binary as "proof" that MOND is falsified. I honestly believe space is so much more nuanced than we've observed so far and future discoveries will certainly reveal as much. At any rate, I'd like to link Stacy McGaugh's recent entry into the debate for consideration.

    Edit: Found this Youtube video that does a good job explaining the basics of this paper.

    Here's a direct link to their paper (also found in the phys.org).

    And a link to a post I've already made about Prof Kroupa - a large proponent for MOND. There's a link for another post I made for Prof Stacy McGaugh there too; another great source for those interested.

    0
    Dusty galaxy reappears in James Webb Space Telescope image
    phys.org Ghostlike dusty galaxy reappears in James Webb Space Telescope image

    It first appeared as a glowing blob from ground-based telescopes and then vanished completely in images from the Hubble Space Telescope. Now, the ghostly object has reappeared as a faint, yet distinct galaxy in an image from the James Webb Space Telescope (JWST).

    Ghostlike dusty galaxy reappears in James Webb Space Telescope image

    "These galaxies were once thought to be extremely rare in the early universe, but this discovery, plus more than a dozen additional candidates in the first half of COSMOS-Web data that have yet to be described in the scientific literature, suggests they might be three to 10 times as common as expected."

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    Jeredin Jeredin @lemm.ee

    Try oat-milk!

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