Verifying a hypothesis

Posted by $ blarman 9 years, 5 months ago to Science
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It never gets old to me to verify a theory. Pure science is the verification of theory through testing.

The thought of a vacuum chamber of this size was also pretty cool. :)
SOURCE URL: http://www.theblaze.com/stories/2014/11/03/fascinating-scientific-spectacle-occurs-when-bowling-ball-feather-are-dropped-in-room-with-zero-air/


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  • Posted by Zenphamy 9 years, 5 months ago
    Ain't science cool. We were taught this in the 6th grade and it's amazed me ever since that the majority of people don't believe it and certainly don't understand it.
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  • Posted by johnpe1 9 years, 5 months ago
    I worked with an electron-beam welder whose
    chamber was a six-foot cube. this was a biggie,
    and took a looooong time to pump down to a few
    microns for welding. . but these folks are dealing
    in acres, in comparison! -- j

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  • Posted by freedomforall 9 years, 5 months ago
    Your tax dollars at waste.
    R+D=Slavery
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    • Posted by $ root1657 9 years, 5 months ago
      For all the people hating on this, you must realize that this chamber is used to test spacecraft to make sure they are going to work in space. Not everything they put in here works, thats why they need to test. Far better to find out now than to get something all the way to space and find out the pressure drop make the side come off (or explode)....
      so with the chamber already existing (and probably paid for it's self after the first time or two it 'saved' a failed spacecraft) there is no real harm in doing this during lunch (which is the kind of thing lab geeks do instead of actually going out to lunch). And so much the better that they filmed it, and released it. Yes, the science is well established, but this video might be what inspires the next generation of scientists to move us even farther. I mean, just look at the reactions in the room. These are pretty smart guys, and they already know what is supposed to happen, but even they are amazed like joyful children seeing the magic that is science.
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      • Posted by freedomforall 9 years, 5 months ago
        Joyful children?
        Pardon my scepticism. This is carefully choreographed video with a script designed to get a certain reaction in the audience. Just like cop shows on tv.

        However, I do not doubt that the chamber has been used for other more practical experiments.
        If I want to do an experiment at zero cost using the facility and the staff, should I get it for free at the expense of taxpayers?
        Should Disney? Should General Electric? Should the BBC?
        I wonder how much the cost was to operate it and pay the staff to set it all up and clean up afterward,
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        • Posted by $ root1657 9 years, 5 months ago
          "Hey guys, we have to do a couple of test sucks to calibrate the chamber/ properly seat the new door seals/ run in the new motors/whatever.... how bout we try that bowling ball thing while we are at it since we can't do a critical test during the test sucks?"
          "OK, but come early and have it ready before the rest of us show up, or we are doing the test suck anyway."

          Completely made up by me just now, yep. Totally believable as stuff I've heard around labs? yep. Extra cost incurred in my scenario? um, $0-ish. Having the TV crew there for it by calling ahead? no biggie... "hey, we have to 'bla' the chamber next week, and we are going to try the ball thing. You can film it if you are here by 7..." Heck, some of these big research labs have PR people who'd jump at a chance to get a film crew in for something like that.
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  • Posted by khalling 9 years, 5 months ago
    that was pretty fun....expensive...
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    • Posted by $ root1657 9 years, 5 months ago
      For all the people hating on this, you must realize that this chamber is used to test spacecraft to make sure they are going to work in space. Not everything they put in here works, thats why they need to test. Far better to find out now than to get something all the way to space and find out the pressure drop make the side come off (or explode)....
      so with the chamber already existing (and probably paid for it's self after the first time or two it 'saved' a failed spacecraft) there is no real harm in doing this during lunch (which is the kind of thing lab geeks do instead of actually going out to lunch). And so much the better that they filmed it, and released it. Yes, the science is well established, but this video might be what inspires the next generation of scientists to move us even farther. I mean, just look at the reactions in the room. These are pretty smart guys, and they already know what is supposed to happen, but even they are amazed like joyful children seeing the magic that is science.
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      • Posted by $ jlc 9 years, 5 months ago
        "...all the people hating on this..."???

        I think it is cool; I would not have assumed that people would 'hate' this. OK, it might be expensive (but we do not know what else was taking place when the evacuated the chamber. There may have been satellite modules to be tested at the same time). It is OK to comment that something is expensive without 'hate' coming into the equation.

        Jan

        Jan
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  • Posted by plusaf 9 years, 5 months ago
    That "hypothesis" needed to be "verified"???
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    • Posted by $ 9 years, 5 months ago
      Every hypothesis should undergo scrutiny, if only to reaffirm what we know. One of the points that was made in the article was that Galileo's original experiment only postulated that a feather would fall as fast - in his actual testing he had to use objects of similar shape/density because he could not control for wind resistance as they finally could in this test. Did they expect to see what happened? Absolutely. Did it somehow violate science to test it, however? I doubt it. "Proven science" is the code word for those who would manipulate it to their own ends. I prefer independent verification.
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  • Posted by strugatsky 9 years, 5 months ago
    For all the logical geeks here, please answer this question (and then have your teenage kids and/or their teachers answer it):

    What weighs more, a kilogram of iron or a kilogram of feathers?
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  • Posted by $ CBJ 9 years, 5 months ago
    Actually, this theory (known as the Weak Equivalence Principle, the equivalence of gravitational and inertial mass) is still not proven, and experiments are still being performed to verify or disprove it. Some theories involving quantum gravity, dark matter and dark energy imply that the principle is violated to a small extent. I've read that some theories even lead to the conclusion that in a vacuum, the feather would fall faster than the bowling ball!

    http://en.wikipedia.org/wiki/Equivalence...
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  • Posted by rbuckwalter 9 years, 5 months ago
    I believe the science behind this is pretty well established and contained in most high school physics texts. A nice demonstration but the money would be better spent on a super collider.
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    • Posted by $ root1657 9 years, 5 months ago
      For all the people hating on this, you must realize that this chamber is used to test spacecraft to make sure they are going to work in space. Not everything they put in here works, thats why they need to test. Far better to find out now than to get something all the way to space and find out the pressure drop make the side come off (or explode)....
      so with the chamber already existing (and probably paid for it's self after the first time or two it 'saved' a failed spacecraft) there is no real harm in doing this during lunch (which is the kind of thing lab geeks do instead of actually going out to lunch). And so much the better that they filmed it, and released it. Yes, the science is well established, but this video might be what inspires the next generation of scientists to move us even farther. I mean, just look at the reactions in the room. These are pretty smart guys, and they already know what is supposed to happen, but even they are amazed like joyful children seeing the magic that is science.

      Oh, and this thing is no doubt WAY cheaper than a supercollider.
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    • Posted by freedomforall 9 years, 5 months ago
      That's what I thought. If a wealthy individual was doing this with his own money it's fine because it's his resource, his decision.
      Giving an expensive example of something that has been scientifically proven for decades is not acceptable use of tax dollars in a bankrupted country.
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      • Posted by rbuckwalter 9 years, 5 months ago
        Well I guess it's possible that they built this chamber to test other more esoteric theories and just did this little demonstration to test the "cameras". Fair enough. Good footage for HS physics classes. But if they really built this thing with public money to test the gravitational acceleration of feathers VS bowling balls in a vacuum they are idiots. Next test - spitting into the wind. I want to see that video.
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        • Posted by $ jdg 9 years, 5 months ago
          NASA was using vacuum chambers long before they sent anybody to space. I would too -- some "obvious" things just don't work the same in a vacuum.

          As far as spending tax money on space -- well, I'm glad we're not doing it now (and now Obama is unlikely to get his Mars mission past Congress). But in the sixties, it was an important part of the arms race, even if it wasn't marketed that way to the public.

          Anyone who puts a missile base on the moon can threaten the world. (With today's ICBMs they can threaten us all anyway, but that wasn't so when Kennedy started the ball rolling.)

          PS. I think Mythbusters already did spitting into the wind.
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