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The LHC will climb into energy, some questions

  1. Feb 7, 2015 #1
    Hi all,
    I'm probably not the only one asking this
    yet another question about the famous LHC, this accelerator
    particles that will rise up to 6.5 TeV energy ...
    That makes 13 TeV ... Does it have the potential to
    create micro black holes, and this would be dangerous?
    I asked some questions, everywhere, and was told
    not (appriori ...) I am sorry to bother you with this kind
    question, but here, I'm curious, and has both a little worried ...
    I heard a lot about sizes with a famous
    Planck energy, but what about? hoping that my poor
    English translated understandable; i am french
    I thank you in advance for your answers, cordially
     
  2. jcsd
  3. Feb 7, 2015 #2

    Borg

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    The Wikipedia article on the LHC explains this clearly.
    In other words, the earth gets hit with far higher energies from space all the time and it hasn't been sucked into a black hole. :)

    Also, don't believe everything that you read in the media, they usually get the science wrong.
     
    Last edited: Feb 7, 2015
  4. Feb 7, 2015 #3
    Hi Borg,

    Thank you for your reply!
    I'm sorry for asking this question, but here, as said
    above, with all the topics in the French forum I used
    visit (futurascience) there was a lot of the same topic
    question ... I had a little trouble to distinguish all the answers ...
    I leave this topic open for other possible answers
    thank you again

    Good Saturday
    Best Regards
     
  5. Feb 7, 2015 #4

    ChrisVer

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    I don't think you can find other possible answers. The stage is fixed:
    http://press.web.cern.ch/backgrounders/safety-lhc
    [it's just speculative theories that predict such productions- which of course will be harmless]

    Media don't get science wrong. Media change the meaning of science because they refer to non-scientists and they want to sell.
     
  6. Feb 7, 2015 #5
    Hello!

    In any case thank you both
    for your answers that reassure me in part
    I am very happy to have registered this forum
     
  7. Feb 7, 2015 #6
    hello,

    I have one last question:
    I just wish to know ... What is the Planck energy with and without dimension? And what has the smallest mass (micro) black hole?

    Good Sunday to all,
     
  8. Feb 7, 2015 #7

    ChrisVer

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    The Planck scale is the energy scale at which gravity start becoming as important as the rest forces in elementary particles (so quantum gravity effects). In normal four dimensions as we know 'em, this scale is at [itex]M_{Pl} \sim 10^{19}~GeV[/itex].
    The theories that predict the micro-black holes are in general theories that concern extra dimensions, which are diluting gravity (and that's why we see it so weak)... So the true Planck's scale would be smaller... so it could be down to some TeV(=1000GeV) and thus predict the black holes in LHC. However that's not the case anymore. Their mass would be equal to the same Planck Scale...
    If it was diluted from 1TeV, then the black hole's mass would be 1TeV. If the Planck's scale was at [itex]10^{13}GeV[/itex] then the black hole's mass would be that... and so on...
     
    Last edited: Feb 7, 2015
  9. Feb 8, 2015 #8
    Thank you for answering

    I hope that he was not pushy, and I think at this stage,
    with all the answers I got, I can say that
    a micro black hole land swallower is almost impossible,
    for example: the many yooboob vid and the famous "Cyriak.Com"

    I wish you a good Sunday in advance :)
     
  10. Mar 7, 2015 #9
    Hello,

    I resume the thread to avoid unnecessary duplication
    As I am a curious, and also a little worried
    despite any solid answers common sense
    I got here; I can not help but
    wonder what would happen if these hypothetical
    micro black holes do not evaporate ...
    and what gravitational force would have this kind of object?
    I do not know anything physical, being a merely curious
    science, these microphones black holes would have a force
    tiny gravitational?

    Bon we to you all
    Nitox
     
  11. Mar 7, 2015 #10

    mfb

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    The same as regular matter with the same mass, which is at most 2.5*1020 g or the mass of a larger molecule. The corresponding forces would be tiny.
     
  12. Mar 7, 2015 #11

    Borg

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    Let me rewrite my original post then.
    In other words, the earth has been getting hit with far higher energies from space for billions of years and it hasn't been sucked into a black hole.
     
  13. Mar 7, 2015 #12
    Full of common sense answers
    So I can say with certainty that
    alarmist scenario (Cyriak, youtube) an outgoing black hole LHC
    land swallower in minutes is almost impossible?
    Sorry for all these questions, but I can not
    not help but ask ...

    Have a nice evening
    Nitox :)
     
  14. Mar 7, 2015 #13

    mfb

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    It is also impossible in years, or millenia, or whatever timescale you like.
     
  15. Mar 7, 2015 #14
    Good evening, and good night ...
    It remains for me to say
    a big thank you to all those who responded
    It contributes greatly to reassure me
    I would can be other issues, but rather technical :)
    I hope not to have too been insisting my questions
    Good Sunday to all
     
  16. Mar 13, 2015 #15
    Re hello here ...
    Subsidiary Question ...

    I thank everyone for giving me answered
    Sorry if I asked a question about it, I wanted
    why these micro black hole take as hypothetical
    time to absorb the matter if it does evaporate (the answers I got french, millions or billions of years?) sorry again for Renewal
    the subject, but here I can not help but continue to ask me
     
  17. Mar 13, 2015 #16

    Borg

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    I don't think that you're understanding the scales of time and distances involved.
     
  18. Mar 13, 2015 #17

    mfb

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    Such a microscopic black hole would evaporate faster than 0.0000000000000000000000001 seconds, long before it moves as far as the diameter of an atomic nucleus.
     
  19. Mar 13, 2015 #18
    Hello everyone!
    Thank you for responding, I hope not to have
    was pushy with all my questions
     
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