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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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Re: Interesting shroom teaser for the experts... [Re: DrB]
    #6473106 -

maybe this is how the Pyramids were built    :headbanger:

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Re: Interesting shroom teaser for the experts... [Re: cpw1971]
    #6492066 -

Finally, the science bit:

The stipes are virtual hydraulic rams. The upward pressure comes from the turgor pressure of the individual cells making up the wall of the hollow stalk of the mushroom. Each individual cell grows as a vertical column by inserting new cell wall uniformly along its length. The major structural component of the cells is a shallow helical arrangement of fibres and chitin winding around the axis of the cell. These chitin fibres are embedded in matrix materials, making the wall material like a carbon-fibre composite. Chitin is an exceptionally strong biopolymer also used by insects for their exoskeletons, and gives immense lateral strength to the cell wall , so that internal pressure is confined as a vertical column. Water enters the cell via osmosis, and the resulting turgor pressure provides the vertical force that lets the mushroom push up through the asphalt.
The phenomenon was first investigated 75 years ago by Reginald Buller who measured the lifting power by loading weights onto a mushroom that was elongating in a glass tube. He calculated an upward pressure of around two-thirds of an atmosphere.

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Re: Interesting shroom teaser for the experts... [Re: bwoy]
    #6492626 -

So... almost 10 PSI..... 

Pretty impressive for a squishy mushroom. :mushroom2:

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Re: Interesting shroom teaser for the experts... [Re: cpw1971]
    #6493619 -

cpw1971 said:
maybe this is how the Pyramids were built    :headbanger:


:strokebeard:

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Re: Interesting shroom teaser for the experts... [Re: Blutjager]
    #6493944 -

ya turgor pressure is neat stuff i saw a deal many years back where a dude built a steel box with a slide that fit it kinda like a hydraulic cillender and then put squash flowers in there and as the squash grew and formed in the box it would push the slide
he had it lifting tractor and splitting wood

here is a link i found the squash lifted 5000 lbs but seems to debunk the tractor, unless it was tryed more than once
http://wwwx.oit.umass.edu/~durfee/hist.cgi?doc=3


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Mushrooms, Mycology and Psychedelics > Mushroom Cultivation
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