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Dry Water

en.wikipedia.org

101–110 of 192 posts

Re: Dry Water

#101

I wonder if it would make a good fire retardant. The water would heat up and make steam and burst out along with some CO2 trapped in it.

Drywall is used in fire safes for that reason. Drywall is made of gypsum, a mineral with water trapped inside its chemical structure. Heat releases that water, which turns into steam and cools the panel. Note that fire-rated drywall is usually glass fiber reinforced, to keep the panel together during a fire.

Re: Dry Water

#102
post #27

Earlier quoted context omitted.

Blenders can be replaced. I would worry more about silicosis. https://en.wikipedia.org/wiki/Silicosis

Or pneumonoultramicroscopicsilicovolcanoconiosis. Been waiting for 25 years to use that word seriously. :) https://en.wikipedia.org/wiki/Pneumonoultramicroscopicsilico...

This made my day, sir. The wikipedia article was interesting but this . . . chef fingers

Re: Dry Water

#103

I wonder if it would make a good fire retardant. The water would heat up and make steam and burst out along with some CO2 trapped in it.

I suspect that would at least partly depend on how hazardous it is to humans, especially under high temperature/pressure or as an inhalation hazard. Is there an MSDS for dry water?

It might be similar to silica dust:

https://louisville.edu/micronano/files/documents/safety-data...

I'm not sure about any differences due to the grain size or the presence of the water. (And maybe something unusual would happen when the water inside each droplet boils due to proximity to the flame -- I don't know what would happen as the droplets rupture.)

Re: Dry Water

#104
post #27

Apparently one can make dry water with a blender - mix fine silica powder and water in a 1:19 ratio (by mass) and put it in a blender for a few minutes. I'm not going to risk my blender to try it, so who's first?

Blenders can be replaced. I would worry more about silicosis. https://en.wikipedia.org/wiki/Silicosis

https://en.wikipedia.org/wiki/Respirator

Re: Dry Water

#105
post #27

Apparently one can make dry water with a blender - mix fine silica powder and water in a 1:19 ratio (by mass) and put it in a blender for a few minutes. I'm not going to risk my blender to try it, so who's first?

Blenders can be replaced. I would worry more about silicosis. https://en.wikipedia.org/wiki/Silicosis

That can be easily avoided though. 1) Do it outside or in a well ventilated area. 2) Wear a mask. Extra precaution) Change clothes when done.

Re: Dry Water

#106

One step closer to Dehydrated Water from Space Quest I, an essential part of the Survival Kit... as I'm sure many of you here undoubtedly know.

On hikes I always think there should be freeze dried water.

Re: Dry Water

#107

Earlier quoted context omitted.

In many fields there are waves with the patent expiration cycle, for instance 3D printing or VR. As the patents expire there is a flurry of new research, everyone obtains new patents and it becomes impossible to create viable products again, until the patents expire and the cycle begins again.

That's very interesting, especially considering that patents were originally created to incentivize people to publish details of inventions so they could be publicly known and accessible in perpetuity. To better uphold their original purpose, perhaps the patent rights period should be shortened to 6 years or thereabouts.

I'm not convinced you need those published details to begin with, especially to the degree to justify the enormous legal apparatus necessary to perpetuate the patent system. Its become much easier to reverse engineer almost any physical good that the original proposition "publish the technical details of your inventions" could just be a future act of good faith and less a legal requirement for a government granted monopoly on the invention. Probably the best example is Coke - theres a popularized meme of the formula being a trade secret (and thus not patented) but the actual drink has been reverse engineered at least once a decade as a publicity stunt for most of the last century. Turns out the value in Coke is in its trademark, not in its formula. That applies to almost every context most people formulate when trying to justify the continued patent regime we have in place.

Re: Dry Water

#108
post #88

Earlier quoted context omitted.

That's very interesting, especially considering that patents were originally created to incentivize people to publish details of inventions so they could be publicly known and accessible in perpetuity. To better uphold their original purpose, perhaps the patent rights period should be shortened to 6 years or thereabouts.

Patents are only a problem for technologies with successful application. Ideally, once you have covered the R&D cost, it should be free for all. Technologies without successful application is the interesting case. With patents, like in this case, they are locked for a while, but at least someone can pick them up. The alternative is to become lost in the archive of some R&D department. That said, that's difficult to s…

Ideally, once you have covered the R&D cost, it should be free for all.

Not unless the R&D cost includes all of the R&D into unsuccessful products that didn't get productized.

Also complicating the debate is pharmaceuticals, where you're also covering the cost of FDA approval, clinical trials, etc. Per https://en.wikipedia.org/wiki/Cost_of_drug_development this cost comes out to several billion per successful drug among established players. (A single drug is several hundred million, but most drugs fail.)

Re: Dry Water

#109
post #15

Earlier quoted context omitted.

Sounds interesting - Do you have a link for that, or if you've got time could you explain?

There's a lot of literature on this; Wikipedia has a decent starting point: https://en.wikipedia.org/wiki/Carbon_sequestration#Geologica... TL;DR: if you compress CO2 to above 73 bar, it becomes supercritical fluid, which has a density almost like water and which does not mix with water. If we inject this fluid into underground saline aquifers, we can trap it indefinitely. Basically exactly the reverse of producing o…

How is it contained in the earth? Wouldn't the pressure eventually escape, either by rupturing its container or seeping through the earth?

Re: Dry Water

#110
post #83

Throwback to the greatest debate of all time: https://www.youtube.com/watch?v=TPDdRrMVEnA

hah! i love it. But i think he is tripping his opposition up with the concept of fish not being aware they are wet since that's all they know, with the actual concept of "covered or saturated with water". He's even laughing at some point because he knows he's trying to pull one over his friends and its working :)

"Moisture is the essence of wetness" - Derek Zoolander

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