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Re: A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks.

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Sam Wormley <swormley1@gmail.com> wrote:
> A balloon with low internal pressure bursts through the growth of a 
> single crack, but above a critical pressure, it breaks apart from 
> multiple cracks.
>> http://physics.aps.org/articles/v8/105
> 
> 
>> When a balloon pops, how many pieces does it break into? A study
>> using high-speed video shows that there are two different bursting
>> modes?a single tear and several tears?and explains why they exist.
>> Researchers inflated sheets of rubber into balloon shapes in a
>> reproducible way and popped them. According to their video data, it
>> all depends on the stress in the rubber sheet, determined by the
>> pressure inside the balloon. At low pressures, a single crack can
>> dissipate the stress, but above a threshold pressure, multiple cracks
>> are required.
>>
>> It was sheer curiosity that led S?bastien Moulinet of the Ecole
>> Normale Sup?rieure (ENS) in Paris to think about this problem. ?I
>> started to get interested in this question after seeing an artistic
>> photograph of an exploding balloon,? he says. ?I noticed that the
>> cracks seemed to be separated by the same distance? and that they
>> advanced in parallel. These properties can produce a kind of
>> ?rib-cage? structure of fragments.
 
I hate to burst your balloon, but it is unlikely that anyone will want
to discuss this cut and paste, spamming shit head. 

-- 
Jim Pennino

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A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks. Sam Wormley <swormley1@gmail.com> - 2015-10-30 20:24 -0500
  Re: A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks. jimp@specsol.spam.sux.com - 2015-10-31 02:23 +0000
  Re: A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks. "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-10-31 13:11 -0700
  Re: A balloon with low internal pressure bursts through the growth of a single crack, but above a critical pressure, it breaks apart from multiple cracks. "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-10-31 13:14 -0700

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