Random science stories that don't warrant their own threads thread Page 23

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  • Chopsen 23 Aug 2013 11:18:05 15,983 posts
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    Interesting results are going to be more...er... interesting than the tech required to derive them. Ok, a big massive space thingy collecting masses of data is one thing, but it's only really *scientifically* interesting if it provides interesting results.

    So sure, it's a cool experiment. But lets see what they turn up. It might just launch and brick itself!
  • mcmonkeyplc 23 Aug 2013 11:28:05 39,456 posts
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    It's going to accurately chart 1 billion stars. That in it's self is cool the stuff it could discover is just the icing on the cake.

    It's not just an experiment it's pretty much the birth of decent stellar cartography.

    Come and get it cumslingers!

  • Chopsen 23 Aug 2013 11:39:58 15,983 posts
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    Not really. It's just an extension of what is already done rather ushering in a new epoch. The parallax method actually *defines* the parsec!

    It's probably exciting if you study stellar evolution or galactic morphology or something that this would be relevant to, as it'll definitely produce enough data to give them something to justify some research grants for years to come.

    What would be *really* interesting is if the more distant stars from the centre could be mapped more accurately regarding their position and velocity. That could be genuinely ground breaking stuff. However, this method by it's nature inherently can't do that.

    Edited by Chopsen at 11:41:33 23-08-2013
  • Commander-Keen 23 Aug 2013 11:43:55 808 posts
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    Really, what we all need to come up between us is a way of making money out of space travel. The moment you crack that, we'll be living in flatpack units on every moon and asteroid from here to god knows where in a matter of decades.

    Someone needs to find a cost effective way of fracking Jupiter or something.
  • Psychotext 23 Aug 2013 11:44:42 54,200 posts
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    Chopsen wrote:
    Not really. It's just an extension of what is already done rather ushering in a new epoch. The parallax method actually *defines* the parsec!
    I, uhh... what this guy said.
  • Bremenacht 23 Aug 2013 12:26:08 18,246 posts
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    Chopsen wrote:
    Here's a q for you: galaxies are moving away from each other due to the expansion of space, causing a doppler effect type phenomena: the red shift. The energy of a photon is proportional to the frequency of the radiation it carries, so red shifting reduces the energy transmitted by those photons.

    Now, energy should be conserved. Fairly fundamental thing that. So where's the energy gone that is "lost" due to red shift?
    Is that statement definitely correct?
  • Chopsen 23 Aug 2013 12:27:44 15,983 posts
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    Yeah.

    http://en.wikipedia.org/wiki/Planck_constant
  • Bremenacht 23 Aug 2013 12:31:37 18,246 posts
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    Wish I could conserve my memory.
  • Bremenacht 23 Aug 2013 12:41:36 18,246 posts
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    Ok, well red-shifting is an observational thing. You are seeing the same energy over a lower frequency from your observation point, I think. If you were observing the photon at the shortest possible distance, the frequency would be almost the same.

    Tell you what - pop this Q in the QUIX REDUX thread!
  • Chopsen 23 Aug 2013 12:51:52 15,983 posts
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    The problem is I don't think anybody knows the answer!

    (This was something that came up in an astronomy tutorial I did, and it was something that's been bugging the tutor for ages and he can't find anyone to give him a decent answer).

    There is a possible explanation called "tired light" but that goes against the universal expansion idea I think, so that introduces a whole new lot of issues.

    I think that as the light is redshifted, so the wavelength increases so the light is emitted for longer. So over the duration of emission at a given observation point, the total amount of energy detected remains the same over all. No idea if this is right or even makes sense though.
  • mal 23 Aug 2013 12:52:15 22,536 posts
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    Energy is power times time, or something like that. Same energy, lower power, longer time.

    Cubby didn't know how to turn off sigs!

  • Bremenacht 23 Aug 2013 13:20:58 18,246 posts
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    Chopsen wrote:
    I think that as the light is redshifted, so the wavelength increases so the light is emitted for longer. So over the duration of emission at a given observation point, the total amount of energy detected remains the same over all. No idea if this is right or even makes sense though.
    Yeah, that sounds good to me. Same energy, lower frequency, greater distance, greater wavelength.

    Wish my brain operated on a higher frequency.
  • sirtacos 24 Aug 2013 01:08:06 7,280 posts
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    Commander Keen wrote:

    Someone needs to find a cost effective way of fracking Jupiter or something.
    And wake Cthulhu? Has Dead Space taught you nothing?

    Edited by sirtacos at 01:08:29 24-08-2013
  • senso-ji 28 Aug 2013 19:12:19 5,909 posts
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    Scientists have successfully grown miniature human brains in a lab

    Very impressive stuff.
  • sirtacos 9 Sep 2013 01:00:48 7,280 posts
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    Schoolkid invents method to rid the oceans of plastic in under 5 years.

    Quite skeptical about the 5-year + $2.5bn revenue claims, but the idea sounds promising.
  • skuzzbag 9 Sep 2013 08:46:23 5,639 posts
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    One of those I hope it works things. For example how is it going to stand up to a mid pacific storm and shipping traffic?
  • Psychotext 9 Sep 2013 09:47:38 54,200 posts
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    There was an article posted recently on it which stated why it wouldn't work.
  • Psychotext 9 Sep 2013 11:41:59 54,200 posts
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    I don't know why exactly, but I find this ridiculously impressive:

  • RedSparrows 9 Sep 2013 11:45:40 22,680 posts
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    Because we all played Lander a lot.
  • DaM 9 Sep 2013 11:52:52 13,197 posts
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    Surely there are cheaper ways to make cows go where you want them to? :)

    How do they plan to lose the velocity from orbital re-entry? Parachutes? A big burn (needing lots of fuel)?
  • Bremenacht 9 Sep 2013 12:59:34 18,246 posts
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    Psychotext wrote:
    I don't know why exactly, but I find this ridiculously impressive:

    Elon Musk is wonderful, isn't he? He's like the Hadden character out of Contact.
  • Psychotext 10 Sep 2013 14:38:43 54,200 posts
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    This is seriously clever:

  • FWB 15 Sep 2013 14:30:44 44,575 posts
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    Knew Terminator was unrealistic.
  • localnotail 16 Sep 2013 23:27:39 23,093 posts
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    One tiny step closer to teleportation

    Edited by localnotail at 23:32:55 16-09-2013

    A strange game. The only winning move is not to play.

  • Bremenacht 16 Sep 2013 23:28:56 18,246 posts
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    What?!
  • localnotail 16 Sep 2013 23:33:37 23,093 posts
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    Hah, sometimes I like to check if people ever follow my links.

    A strange game. The only winning move is not to play.

  • ILoveThrashMetal 16 Sep 2013 23:34:15 728 posts
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    Has kind of been done before http://news.bbc.co.uk/1/hi/sci/tech/3811785.stm

    Arsechickens

  • Bremenacht 16 Sep 2013 23:36:57 18,246 posts
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    localnotail wrote:
    Hah, sometimes I like to check if people ever follow my links.
    I thought it was some sort of kinky personal picture you'd linked.
  • localnotail 16 Sep 2013 23:41:27 23,093 posts
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    Yes, that was me in bed with Jesse Pinkman and Walter White.

    A strange game. The only winning move is not to play.

  • Bremenacht 16 Sep 2013 23:49:41 18,246 posts
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    I'm still catching up with '90s Partridge, so my chances of recognising most current TV people are nil.
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