The history of black holes - with Marcus Chown

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  • Опубліковано 30 жов 2024

КОМЕНТАРІ • 120

  • @marcuschown1104
    @marcuschown1104 Годину тому

    It was such a privilege to give a talk at the Royal Institution, where Michael Faraday created the first electric motor in 1821 and first generated electricity from magnetism - the basis of millions of electrical generators across the world today - in 1831. By the door to the lecture theatre is an oil painting of Faraday lecturing, and, in a glass case, the very instruments he used in that demonstration!

  • @owlredshift
    @owlredshift 5 днів тому +20

    Fantastic presentation. We all owe such a huge thanks to RI for coordinating such world class speakers for us to digest every week.

    • @SebastianBeresniewicz
      @SebastianBeresniewicz 4 дні тому

      Couldn't agree more.. I know this will be really controversial but I wonder if someday we might see a reputable institute like RI use AI to create a presentation from Einstein on his theories of relativity.

    • @owlredshift
      @owlredshift День тому +3

      @@SebastianBeresniewicz there are a deluge of channels that plague UA-cam with that sort of prattle already.
      What you have proposed is the antithesis of what this channel represents.

    • @SebastianBeresniewicz
      @SebastianBeresniewicz День тому

      Ah, gotcha. Wasn't aware and I think I agree.
      I thought about it a little bit more after your comment and my first thought was "well what if it's a reputable institute like the RI that reviewed the presentation before posting it? Wouldnt that possibly help to allow us to see things like Einstein or Newton speak? Who wouldnt want that?"
      Then I realized that even at a place like the RI there are still imperfect humans and maybe one might disagree with one small thing either would say and discard it and who knows what that would do to the accuracy of the representation of someone long gone.

    • @owlredshift
      @owlredshift День тому +3

      @@SebastianBeresniewicz I dunno about any of that, but the tradition of RI is having some of the most brilliant minds from the world share a glimpse of the farthest reaches of our knowledge. AI, on the other hand, operates only effectively within the confines of well known information.
      Also, there is no precedence for RI to replace a human presentation/speaker with AI, the closest you could get are speeches from the actual people that made the AI technology- that you are excited about today- many years ago, themselves.
      AI is a hammer, not a robot that does everything, but one tool in humanities tool bag, and it would do many good to stop seeing the world as suddenly made of nails. With respect.

    • @samuelgarrod8327
      @samuelgarrod8327 9 годин тому

      ​@@SebastianBeresniewiczArtificial intelligence is only a good thing when it's replacing genuine stupidity.

  • @whippet611
    @whippet611 15 годин тому +3

    absolutely brilliant informative and delivered in a superb fashion

  • @kedarbhide007
    @kedarbhide007 19 годин тому +2

    Superb presentation 👏 👌 👍

  • @ansfridaeyowulfsdottir8095
    @ansfridaeyowulfsdottir8095 День тому +6

    I've tried quite a few lectures recently where I had to give up after a while due to a dreadful speaker. What a refreshing change to hear someone who can speak well, present well and doesn't have a horrible voice.
    {:o:O:}
    _(Edited for tyops)_

    • @daddust
      @daddust 18 годин тому

      The art forger presentation? Dreadful.

    • @andrewg7035
      @andrewg7035 6 годин тому

      The presenters are mostly professional scientists, not professional talkers. Which is a good thing since it’s science we’re here for. The internet abounds with charismatic Ted talkers if that’s your jam.

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Thanks.

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Thanks,

  • @lool8420
    @lool8420 День тому +2

    Fab lecture Marcus, your enthusiasm for the fascinating subject of black holes shines is easily felt. I hope, as I am sure you do, that some brilliant little mind is stirred to start wondering about them and eventually shed more of nature's mysteries, who knows, maybe even change the existing paradigm of space time as Einstein did to Newton in 1915

  • @hojowarf6488
    @hojowarf6488 День тому +14

    Do people still think that Einstein sold out when he went from acoustic folk music to electric rock?

  • @muzikhed
    @muzikhed 19 годин тому +1

    Good explanation, very enjoyable.

  • @alex79suited
    @alex79suited День тому +2

    That was terrific 👏, I love these programs. Thank you very much. It's much appreciated by myself and all. It was spectacular. Peace ✌️ 😎.

  • @leeproudman980
    @leeproudman980 День тому +1

    Can you come on again an do a presentation on your book quantum theory can't hurt you please Marcus great talk by the way cheers yessir

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Would love to. I have suggested to the RI that next year I come and talk about "100 years of quantum weirdness".

  • @robertspence7766
    @robertspence7766 18 годин тому

    Excellent talk

  • @His-story-teller
    @His-story-teller День тому +1

    Loved it

  • @matdrat
    @matdrat День тому +2

    He could have gone back further.
    1783 - John Michell, clergyman, philosopher, scientist, conceived a 'black hole' using Newtonian physics.

    • @marcuschown1104
      @marcuschown1104 2 години тому

      You are right. The problem, however, is always what you can fit in in an hour! But I would say that Michell's idea was based on faulty reasoning because he wrongly assumed that such bodies could exist without being crushed by their own prodigious gravity down to tiny dense points. It required Einstein’s theory of gravity, which supplanted Newton’s, to truly describe what happens when gravity becomes immensely strong.

  • @dinarwali386
    @dinarwali386 День тому

    WoW, this is poetic.

  • @Neverforget71324
    @Neverforget71324 21 годину тому

    55:45 Amen to that, brother!

  • @sonarbangla8711
    @sonarbangla8711 17 годин тому

    This lecture closely resemble Mandelbrot set's 'asymptotic limit' that shows an evaporating BH with a 'pop', as every singularity can be 'normalized'.

  • @theklaus7436
    @theklaus7436 День тому

    What a beautiful lecture. Think about the next channel is about flat earth- but you tube has some of the best tv I’ve seen. My knowledge hasn’t been greater than now 🎸😊and I listen to scientists at least two hours every day

  • @hiennganguyen6364
    @hiennganguyen6364 День тому

    Magnetic force is either syn-gravity force or anti-gravity force for the particles moving circular, depending on the relative position towards North pole or South pole and the gravity plane on which the particles circle around.

  • @Neverforget71324
    @Neverforget71324 22 години тому

    7:45... note: Schwarzschild had three children with his wife Elise: Agathe Thornton (1910-2006) emigrated to Great Britain in 1933. In 1946, she moved to New Zealand, where she became a classics professor at the University of Otago in Dunedin. Martin Schwarzschild (1912-1997) became a professor of astronomy at Princeton University.
    Alfred Schwarzschild (1914-1944) remained in Nazi Germany and was murdered during the Holocaust. Sad...

  • @johnsheehan5109
    @johnsheehan5109 День тому +1

    If memory serves, I believe that the Brits, (back in the old days) called a section of Calcutta, India, "the black hole of Calcutta".

    • @jimmyzhao2673
      @jimmyzhao2673 День тому +1

      Why did they do that ?

    • @johnsheehan5109
      @johnsheehan5109 День тому +1

      @@jimmyzhao2673 If had seen Galcutta (as I did), you would understand. The filth, squalor, the smells and the appalling living conditions were breath taking hence the name.

    • @colley001
      @colley001 День тому +2

      I understood it to be a prison / dungeon that held British POW troops in the mid 1750’s something to do with Tea?

    • @daddust
      @daddust 18 годин тому

      That was a murder hole in a prison, not a section.

    • @samuelgarrod8327
      @samuelgarrod8327 9 годин тому

      ​@@colley001Correct. It was not an area, it was a place of confinement/imprisonment.

  • @cykboy3254
    @cykboy3254 День тому +2

    does this lecture go into the history of the 22 billion pound black hole or what?

    • @PMA65537
      @PMA65537 День тому

      Would you believe a history begun with "Before I begin ...?" Even Artie Shaw couldn't get away with that.

    • @marcuschown1104
      @marcuschown1104 2 години тому

      No. But you are not the first to have asked this!

  • @shawns0762
    @shawns0762 23 години тому

    There are no black holes. In 1939 Einstein wrote -
    "The essential result of this investigation is a clear understanding as to why the Schwarzchild singularities (Schwarzchild was the first to raise the issue of General Relativity predicting singularities) do not exist in physical reality. Although the theory given here treats only clusters (star clusters) whose particles move along circular paths it does seem to be subject to reasonable doubt that more general cases will have analogous results. The Schwarzchild singularities do not appear for the reason that matter cannot be concentrated arbitrarily. And this is due to the fact that otherwise the constituting particles would reach the velocity of light."
    He was referring to the phenomenon of dilation. Mass that is dilated is smeared through spacetime relative to an outside observer. It's the phenomenon our high school teachers were talking about when they said "mass becomes infinite at the speed of light". Time dilation is just one aspect of dilation. Even mass that exists at 75% light speed is partially dilated.
    Dilation occurs wherever there is an astronomical quantity of mass. This includes the centers of very high mass stars and the overwhelming majority of galaxy centers.
    The mass at the center of our own galaxy is dilated. This means that there is no valid XYZ coordinate we can attribute to it, you can't point your finger at something that is smeared through spacetime. In other words that mass is all around us.
    This is the explanation for dark matter/galaxy rotation curves. The "missing mass" is dilated mass.

  • @geordiedog1749
    @geordiedog1749 День тому

    So “singularity” just means “oops this is wrong’. Or maybe it just means “we don’t know?”
    What an interesting lecture. Taking such complex ideas and making them understandable to a dim wit like me is no mean feat!

    • @RFC3514
      @RFC3514 День тому

      Typically, it means "with our current formulas, something gets divided by zero here".

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Yes. A singularity is a mathematical fiction. It cannot possibly exist in the real world. It is telling us that a theory has been stretched beyond the point where it has anything sensible to say and that we need a better theory.

  • @jimmyzhao2673
    @jimmyzhao2673 День тому +1

    What about the missing Dogs ? What about the missing Cats ?

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Probably more likely to have been eaten by a black hole than immigrants, as claimed by Donald Trump!

  • @ThBraveBraveSirRobin
    @ThBraveBraveSirRobin 2 години тому

    So the gravitational waves at source would have been huge. Would they have been damaging to nearby solar systems ? I can image that if the amplitude of the wave is high it could potentially rip a planet to pieces.

  • @davidbowman9782
    @davidbowman9782 День тому +1

    What about the black matter?

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Do you mean "dark matter", the stuff that outweighs the visible stars and galaxies by a factor of 6? It's identity is one of the biggest outstanding mysteries of science.

  • @ChandrasegaranNarasimhan
    @ChandrasegaranNarasimhan День тому

    The thing is electron and proton has to merge and make a neutron. And someone has to propose such a thing can happen.

    • @marcuschown1104
      @marcuschown1104 2 години тому

      Strictly speaking, an electron and proton do not "merge" to create a neutron. In a process known as "inverse beta decay", an electron reacts with a proton to create a neutron and a neutrino.

  • @jurajhprobyt2107
    @jurajhprobyt2107 День тому

    nobody remembers the old ones anymore😊

  • @MyKharli
    @MyKharli День тому

    Are they not experimenting on themselves ? Can you tell who the they are by the extraordinary lack of plastic around them ?

  • @azharalibhutto1209
    @azharalibhutto1209 День тому

    ❤❤❤❤

  • @cerealport2726
    @cerealport2726 День тому

    People talk a lot about modern papers being peer reviewed (or not) as though this actually means something.
    Einsteins most famous work was not peer reviewed in this way
    Crick and Watson were not peer reviewed in this way
    The vast majority of scientific discovery and advancement was not peer reviewed in this way... yet we advanced nonetheless.

    • @andrewlarking7492
      @andrewlarking7492 22 години тому

      The vast majority? Can you prove that claim?

    • @cerealport2726
      @cerealport2726 22 години тому +1

      ​@@andrewlarking7492 well, when you think that scientific research and the sharing of knowledge goes back centuries (or even further), and modern "peer review" goes back a few decades at most, then, yes, it's quite clear that more discoveries about our world have been made without modern "peer review" than with it.
      Can you prove this is not correct?

    • @daddust
      @daddust 18 годин тому

      This is another of the Einstein science facts that isn’t Einstein or facts. What most famous work btw? His annus mirabilis work was in Annalen Der Physik which was known for not rejecting work and not being referred. Einstein got very angry in America when his work was refereed. Annalen printed plenty of bad science along with the great. As for refereeing, Einstein in 1914 was a very demanding referee for the Prussian Academy of Science while none of his papers would ever be reviewed or refereed because he like all professors was untouchable.

    • @marcuschown1104
      @marcuschown1104 Годину тому

      That's an interesting observation. The German journals where Einstein first published were, as you say, not peer-reviewed. German science relied on other scientists pointing out something was wrong after it was published. Once he moved to America, Einstein was shocked that his work would be peer reviewed and even withdrew a paper (on gravitational waves) in a fit of pique! The scientific world has concluded, however, that it is better to filter out papers that are wrong before publication than after publication.

  • @maitlandmottmorency
    @maitlandmottmorency 6 годин тому

    Do speakers pay to give talks at the RI? 99% have a book to plug.

    • @marcuschown1104
      @marcuschown1104 2 години тому

      The RI paid me to give a talk. Incredibly, the average income of a full-time writer in the UK - according to the Society of Authors - is ~£7000 per year. It's really hard to make a living so authors have to take any opportunity they can to sell their books.

  • @beachboardfan9544
    @beachboardfan9544 День тому

    So if most star systems are binary or more, wouldnt that likely make us early life to the universe? Wont all multi star systems eventually become single star systems through absorbing their partner?

    • @andrewlarking7492
      @andrewlarking7492 22 години тому

      You’re assuming all stars are the same age.

    • @marcuschown1104
      @marcuschown1104 Годину тому

      It all depends on how far apart the stars in, for instance, a binary system are. If they are far enough apart, they will never spiral together in lss than the age of the universe.

  • @NathanDudani
    @NathanDudani День тому +1

    🕳️

  • @PMA65537
    @PMA65537 День тому

    22:31 "exactly the same thing happens with light" in 2024 is the RI teaching luminiferous ether? Doppler calculations for light and sound are different.

    • @cerealport2726
      @cerealport2726 День тому +1

      Either you are maliciously pedantic because you want to appear smart (it backfired), or you fail to understand the concept well enough to be able to generalise it.
      The broad concept is the same for light and sound... a frequency shift based on the direction and speed of travel of a source relative to the observer.

    • @marcuschown1104
      @marcuschown1104 Годину тому +1

      I'm merely pointing that the doppler effect applies to all WAVES - that includes waveS in a medium like sound and waves in no medium like light.

  • @peterdamen2161
    @peterdamen2161 16 годин тому

    Beautiful presentation. Only too bad black holes don't exist.....

    • @marcuschown1104
      @marcuschown1104 Годину тому

      Thanks. However, yhe evidence is overwhelming that black holes exist - much to the surprise and shock of physicists, who, like Einstein, hoped that they would not exist!

  • @timothy8426
    @timothy8426 День тому

    Fire and ice. You know when you're cold from occupational space within your body starts shivering from rapid heat loss. Standing next to an external magnetic field like fire you absorb heat. All his statements are conjecture without physics. What force caused iron to collapse in on itself. A hole in your pocket let's change fall out. Empty space means no heat. It's a sphere of absolute zero heat energy within its core or nucleus is more probability than a hole. It actually works for external magnetic fields. Centrifugal force outside of the sphere or core cycling circulation centrifugal force. Flowing currents around these massive external magnetic fields. Hurricanes and tornadoes are centrifugal forces of magnetism flowing currents quantumized around heat energy cores in equalization to pressure within atmospheres. Space is the counter to clockwise with cold space itself as the core. Internal magnetic fields are spherical and external magnetic fields are spherical but the flow is not being recycled through the nucleus or core like quantum internal magnetic fields grounding currents. External magnetic fields don't ground currents they spread outward force of pressure known as expansion of occupational space as mass expands outward force of pressure. Magnetism holding galaxies together in equalization to force and distance traveling cycling circulation centrifugal force.

  • @timothy8426
    @timothy8426 День тому

    It's a external magnetic field flowing currents around these massive external magnetic fields spinning all external heat energy within its field like a record on a record player centrifugal force of magnetism repulsion. Internal magnetic fields grounding currents through its nucleus or core like earth's internal quantum magnetic fields accumulation of quaternary elements combined synchronization of amplification of magnetism bonding. External heat energy outside of entanglement of mass as potential renewable heat energy when absorbed into internal magnetic fields grounding currents through its nucleus or core flow outside the monopoles of pure fabric of cold space repulsion within its core or nucleus. Heat and cold don't mix. They are anti-matter matter. Mass is neutralized occupational space as outward force of pressure within mass as occupational space neutralized by heat cycling circulation centrifugal force faster within mass. External currents flowing around these massive external magnetic fields spinning all external heat energy within its field in equalization to repulsion within and without entanglement of mass as magnetism magnifying heat propulsion faster than normal momentum of space itself. All heat. Two physical properties of physics. Cold space and heat singularities. Heat is not a wasted byproduct. It is the universal force of pressure known as propulsion from repulsion into repulsion as magnetism. All mass is magnetic. Centrifugal force held in magnetism is why we have appliances that remove heat and restore heat. We burn calories as fuel for fire or warmth. We disolve mass as fire as external heat energy outside of entanglement of mass from mass. Rockets use heat energy for propulsion. Light doesn't travel. Lightning burns through atmospheric gasses disolving into external heat energy outside of entanglement of mass as fire lighting up the sky instantaneously like campfires slowly disolving internal magnetic fields grounding currents through its nucleus or core as external heat energy outside of entanglement of mass as fire lighting up the surrounding atmospheres. Educated repeatedly by constant denial of observations. We burn calories and mass as fuel for fire or warmth. Everything is currents grounding through mass towards earth's internal magnetic field grounding currents through its nucleus or core. Mass falls in equalization to magnetism. Impaction force of currents flowing. The greater the flow the greater the impaction of outward force of pressure. Magnetism is amplification of quaternary magnetism amplification as solidity when displacement can't be overcome by impaction force of currents colliding. Magnetic fields interactions with other magnetic fields. When meteorites exceed earth's internal magnetic field grounding currents mass starts disolving into external heat energy outside of entanglement of mass as meteorites burn calories as external heat energy outside of entanglement of mass.

    • @geordiedog1749
      @geordiedog1749 День тому +1

      Innit.

    • @Safetytrousers
      @Safetytrousers День тому

      The ignition of rockets creates gas. The force of the gas being expelled creates a reaction force that propels the rocket in the opposite direction. You were wrong about that which casts doubt on everything you have said. And you have never heard of paragaphs.

    • @strawberrythiefproductions
      @strawberrythiefproductions День тому

      i need a lie down

    • @samuelgarrod8327
      @samuelgarrod8327 9 годин тому

      Naaah, I don't think so.

  • @bretdaley6869
    @bretdaley6869 День тому

    How can anybody have the hubris to name anything the history of black holes humans egocentric reflections are just insane sometimes

    • @NathanDudani
      @NathanDudani День тому +1

      Nice thesaurus use

    • @bretdaley6869
      @bretdaley6869 День тому +2

      @@NathanDudani Huh, would you need a thesaurus for that

    • @lool8420
      @lool8420 День тому +1

      There is a history to their discovery, I'm sure you'd admit that. Whether you think he covered it in sufficient depth in that lecture is up for debate but it is a RI lecture so you were only ever going to get a broad brush account

    • @cerealport2726
      @cerealport2726 День тому

      seems like a poorly coded chatbot to me

    • @andrewlarking7492
      @andrewlarking7492 22 години тому +1

      I think you don’t understand the word “history”.

  • @lonniehutchinson4310
    @lonniehutchinson4310 День тому

    I’m skeptical the children dying in Gaza know, or care, what a black hole is. Hyperbole is only useful when it doesn’t distract from the point you are trying to make.

    • @cerealport2726
      @cerealport2726 День тому +4

      Take your politics elsewhere...

    • @Neverforget71324
      @Neverforget71324 21 годину тому +3

      Time and a place for everything. This time and this place is reserved for scientific discussions... not politics, please.

    • @lonniehutchinson4310
      @lonniehutchinson4310 20 годин тому

      @ how scientific was his assertion that everyone knows what black holes are? Did he provide a citation for that claim?

    • @lonniehutchinson4310
      @lonniehutchinson4310 20 годин тому

      @ do you think the starving children in famine struck areas know or care what black holes are? You are missing the point.

    • @johnnym6700
      @johnnym6700 15 годин тому

      @@lonniehutchinson4310 Even Steven Hawking said in his later years that he didn't think black holes even existed.

  • @williamstearns4581
    @williamstearns4581 14 годин тому

    Time is only relevant to humans on earth.