• Re: Primordial black holes

    From Mario Petrinovic@21:1/5 to jillery on Tue Dec 21 11:01:57 2021
    On 21.12.2021. 10:19, jillery wrote:
    The following is a link to a Spacetime video which describes the
    possibility of millions of atom-sized primordial black holes, remnants
    from the Big Bang and candidates for Dark Matter:

    <https://www.youtube.com/watch?v=AK44wAvv2E4>

    A mass of a large asteroid compressed into a black hole would have an
    event horizon the circumference of hydrogen atom. If such a tiny
    black hole hit the Earth, it would go right through like a bullet, and continue on its journey.

    On a related note, it has been argued that such small black holes
    should evaporate with Hawking radiation within the lifetime of the
    Universe. It turns out that a black hole's temperature and so its evaporation rate is inversely proportional to its mass cubed. A black
    hole with a mass of the Moon would have about the same temperature as
    the CMB, about 2.7K. Any primordial black hole currently more massive
    than the Moon would still be growing, absorbing photonic mass faster
    than it emits Hawking radiation, and shrink only as the background temperature gets ever colder as the universe expands ever larger.

    Primordial black holes less massive than the Moon will evaporate and
    get smaller and hotter in a positive feedback. For example, the
    formula says a black hole the mass of blue whale, and so a diameter of
    about 10^-22 meters, would disappear in a spectacular explosion,
    evaporating all its mass in about a second.

    However, there is speculation that a black hole with a diameter of
    about 10^-35 meters and a mass of just 10^-8 grams would not have
    enough energy to evaporate, and so theoretically exist forever.

    I am not interested in this, I would only like to inform you that all
    the evidence about Big Bang turned out to be false (recently).
    There were two evidences, Big Bang echo, and "red shift". For the Big
    Bang echo scientists used only the original picture, 56 years old.
    Recently they got the idea to make new picture, since now they have
    better instruments. And they pointed those better instruments to the
    sky, and they didn't find anything, there is no Big Bang echo.
    "Red shift" was another "evidence". Whenever you expressed the doubt
    in "Big Bang echo", they would always mention this second evidence. Now,
    if you would express doubt in that evidence too, they would say that you
    are nuts. But, few months after it was found out that there is no Big
    Bang echo, a new interpretation of "red shift" suddenly emerged, lol.
    The Big Bang idea is sneaked into science by Vatican. It includes the
    idea of Creation. The Big Bang theory was made by Catholic priest,
    Georges Lemaitre. Of course, you can sell anything to science, with
    ease. Science is very shallow.

    --
    https://groups.google.com/g/human-evolution
    human-evolution@googlegroups.com

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From jillery@21:1/5 to All on Tue Dec 21 04:19:50 2021
    The following is a link to a Spacetime video which describes the
    possibility of millions of atom-sized primordial black holes, remnants
    from the Big Bang and candidates for Dark Matter:

    <https://www.youtube.com/watch?v=AK44wAvv2E4>

    A mass of a large asteroid compressed into a black hole would have an
    event horizon the circumference of hydrogen atom. If such a tiny
    black hole hit the Earth, it would go right through like a bullet, and
    continue on its journey.

    On a related note, it has been argued that such small black holes
    should evaporate with Hawking radiation within the lifetime of the
    Universe. It turns out that a black hole's temperature and so its
    evaporation rate is inversely proportional to its mass cubed. A black
    hole with a mass of the Moon would have about the same temperature as
    the CMB, about 2.7K. Any primordial black hole currently more massive
    than the Moon would still be growing, absorbing photonic mass faster
    than it emits Hawking radiation, and shrink only as the background
    temperature gets ever colder as the universe expands ever larger.

    Primordial black holes less massive than the Moon will evaporate and
    get smaller and hotter in a positive feedback. For example, the
    formula says a black hole the mass of blue whale, and so a diameter of
    about 10^-22 meters, would disappear in a spectacular explosion,
    evaporating all its mass in about a second.

    However, there is speculation that a black hole with a diameter of
    about 10^-35 meters and a mass of just 10^-8 grams would not have
    enough energy to evaporate, and so theoretically exist forever.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From jillery@21:1/5 to mario.petrinovic1@zg.htnet.hr on Tue Dec 21 13:35:07 2021
    On Tue, 21 Dec 2021 11:01:57 +0100, Mario Petrinovic <mario.petrinovic1@zg.htnet.hr> wrote:

    On 21.12.2021. 10:19, jillery wrote:
    The following is a link to a Spacetime video which describes the
    possibility of millions of atom-sized primordial black holes, remnants
    from the Big Bang and candidates for Dark Matter:

    <https://www.youtube.com/watch?v=AK44wAvv2E4>

    A mass of a large asteroid compressed into a black hole would have an
    event horizon the circumference of hydrogen atom. If such a tiny
    black hole hit the Earth, it would go right through like a bullet, and
    continue on its journey.

    On a related note, it has been argued that such small black holes
    should evaporate with Hawking radiation within the lifetime of the
    Universe. It turns out that a black hole's temperature and so its
    evaporation rate is inversely proportional to its mass cubed. A black
    hole with a mass of the Moon would have about the same temperature as
    the CMB, about 2.7K. Any primordial black hole currently more massive
    than the Moon would still be growing, absorbing photonic mass faster
    than it emits Hawking radiation, and shrink only as the background
    temperature gets ever colder as the universe expands ever larger.

    Primordial black holes less massive than the Moon will evaporate and
    get smaller and hotter in a positive feedback. For example, the
    formula says a black hole the mass of blue whale, and so a diameter of
    about 10^-22 meters, would disappear in a spectacular explosion,
    evaporating all its mass in about a second.

    However, there is speculation that a black hole with a diameter of
    about 10^-35 meters and a mass of just 10^-8 grams would not have
    enough energy to evaporate, and so theoretically exist forever.

    I am not interested in this, I would only like to inform you that all
    the evidence about Big Bang turned out to be false (recently).


    I posted this to the wrong froup. My apologies.


    There were two evidences, Big Bang echo, and "red shift". For the Big
    Bang echo scientists used only the original picture, 56 years old.
    Recently they got the idea to make new picture, since now they have
    better instruments. And they pointed those better instruments to the
    sky, and they didn't find anything, there is no Big Bang echo.


    Since you mention it, there have been multiple surveys of the CMB aka
    Big Bang echo, most famously COBE, WMAP, and PLANCK, and all reported
    2.7 degree Kelvin black-body background radiation with variations +/-
    0.00005 degrees. If you have the right kind of radio, you can tune in
    and hear it yourself.


    "Red shift" was another "evidence". Whenever you expressed the doubt
    in "Big Bang echo", they would always mention this second evidence. Now,
    if you would express doubt in that evidence too, they would say that you
    are nuts. But, few months after it was found out that there is no Big
    Bang echo, a new interpretation of "red shift" suddenly emerged, lol.


    Right here would have been a good place for you to have specified your
    basis for your "doubts" instead of baselessly alluding to them. But
    like you said, you're not interested.

    I apologize again for waking you.


    The Big Bang idea is sneaked into science by Vatican. It includes the
    idea of Creation. The Big Bang theory was made by Catholic priest,
    Georges Lemaitre. Of course, you can sell anything to science, with
    ease. Science is very shallow.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)