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    be aware of the controversy over the age and
    ultimate fate of the universe associated with the
    value of the Hubble Constant and the possible
    existence of dark matter.
    the above written content is from the IAL specification. can anyone please explain this to me?
    another question is regarding unit 6 phy prep. Any tips on which experiments i should focus on and do i need to know unit 3 content as well?
    Thank you and good luck for the exams
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    (Original post by Ha97)
    be aware of the controversy over the age and
    ultimate fate of the universe associated with the
    value of the Hubble Constant and the possible
    existence of dark matter.
    the above written content is from the IAL specification. can anyone please explain this to me?
    another question is regarding unit 6 phy prep. Any tips on which experiments i should focus on and do i need to know unit 3 content as well?
    Thank you and good luck for the exams
    PM me
    I can explain better there
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    (Original post by Kyx)
    PM me
    I can explain better there
    Hi

    Can you post here too, I am interested to know

    Thanks
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    (Original post by leavingthecity)
    Hi

    Can you post here too, I am interested to know

    Thanks
    If you PM me, I can send the PM to both of you
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    (Original post by Kyx)
    If you PM me, I can send the PM to both of you
    Why do you need to pm? Isn't the point of posting public threads not only to help the OP but to help others in future who would like the same help?
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    (Original post by Student403)
    Why do you need to pm? Isn't the point of posting public threads not only to help the OP but to help others in future who would like the same help?
    Yes, but PM is the only thing that works really right now

    My internet is slow, and the threads are lagging

    It would be easier to PM
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    (Original post by Kyx)
    Yes, but PM is the only thing that works really right now

    My internet is slow, and the threads are lagging

    It would be easier to PM
    Not really sure how that works but if you say so..

    leavingthecity Ha97 be sure to paste the pm here for the benefit of future users
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    (Original post by Student403)
    Not really sure how that works but if you say so..

    leavingthecity Ha97 be sure to paste the pm here for the benefit of future users
    PM me too
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    (Original post by Student403)
    Not really sure how that works but if you say so..

    leavingthecity Ha97 be sure to paste the pm here for the benefit of future users
    will do.
    in the mean time, could you tell me which experiments i need to focus on for unit 6 and if you have a list of experiments we need to know, could u send it to me?
    that would be awesome
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    (Original post by Ha97)
    will do.
    in the mean time, could you tell me which experiments i need to focus on for unit 6 and if you have a list of experiments we need to know, could u send it to me?
    that would be awesome
    I think I have a list of 18 experiments saved for Edexcel. Remind me tomorrow and I'll post them when I'm back on my laptop
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    (Original post by Student403)
    I think I have a list of 18 experiments saved for Edexcel. Remind me tomorrow and I'll post them when I'm back on my laptop
    Awesome, how is the prep going?
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    (Original post by Ha97)
    Awesome, how is the prep going?
    Very well, thanks for asking. It's a nice set of topics tbh and I'm really enjoying space. How is your prep?
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    (Original post by Student403)
    I think I have a list of 18 experiments saved for Edexcel. Remind me tomorrow and I'll post them when I'm back on my laptop
    What experiment are you doing for unit 6?

    I did something about SHM and a pendulum.
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    (Original post by XxKingSniprxX)
    What experiment are you doing for unit 6?

    I did something about SHM and a pendulum.
    It's a written paper. No specific one
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    (Original post by Student403)
    I think I have a list of 18 experiments saved for Edexcel. Remind me tomorrow and I'll post them when I'm back on my laptop
    Hi please don't forget to post them - this would be a great revision tool
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    I might as well post it here while I can

    The hubble constant is a measurement of the rate at which galaxies are moving away from us. It is measured in kilometres per second per megaparsec.

    It shows that the further away a galaxy is, the faster it is moving away from us. So, if we 'reverse' time, we can tell that the universe had a beginning. We can even calculate when this was (to within a few hundred million years).

    The existence of dark matter means that there could be more mass in the universe than we originally thought, so this would be slowing the expansion of the universe. This means that the expansion was quicker in the past, so the universe is actually younger than calculated.

    As for the fate of the universe, current calculations show that the universe will keep on expanding forever, although that expansion will slow down. After several trillion years, the rate of expansion will tend to zero, but never actually be zero.

    If there is dark matter, this will cause there to be more gravitational attraction between matter, causing it to eventually re-collapse.

    I hope this explains it for you
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    (Original post by Student403)
    Very well, thanks for asking. It's a nice set of topics tbh and I'm really enjoying space. How is your prep?
    prep is going good. Yeah tbh i liked unit 4 topic more,however, these are not that bad either. Its the terminology, we have to be very specific. did you start revision yet?
    can you please upload the experiments list. Thanks
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    (Original post by Kyx)
    I might as well post it here while I can

    The hubble constant is a measurement of the rate at which galaxies are moving away from us. It is measured in kilometres per second per megaparsec.

    It shows that the further away a galaxy is, the faster it is moving away from us. So, if we 'reverse' time, we can tell that the universe had a beginning. We can even calculate when this was (to within a few hundred million years).

    The existence of dark matter means that there could be more mass in the universe than we originally thought, so this would be slowing the expansion of the universe. This means that the expansion was quicker in the past, so the universe is actually younger than calculated.

    As for the fate of the universe, current calculations show that the universe will keep on expanding forever, although that expansion will slow down. After several trillion years, the rate of expansion will tend to zero, but never actually be zero.

    If there is dark matter, this will cause there to be more gravitational attraction between matter, causing it to eventually re-collapse.

    I hope this explains it for you
    yes this helps a lot. Thanks
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    Ha97
    ememoville


    http://www.mediafire.com/download/39...al+1-18%29.pdf
 
 
 
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