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Comment Glue foam guns. (Score 1) 712

They shoot non-toxic foam that expands, and is sticky, then hardens into soft and rubbery in 10-20 seconds.
Cop shoots perp who soon is covered, sticky and cumbersome as the foam builds up. If he fell over = stuck to the ground.

He might overheat, since foam is an insulator. It would be soft enough to manually remove from mouth/nose.

Biggest problem would be the mass a cop would have to carry. At 1 pound per cubic foor he could easily carry 20 pounds, plus the 10 pound ejector.

A car could carry lots = good crowd control weapon.

clean up = a problem.

Comment Bag Lady Effect (Global) - BLEGS (Score 1) 563

If stuff was free, we would all turn into BLEGs Everything hoarders get they gather for free and the fill their space, be it house or box world on the street.
If stuff is free to start, it must then have a cost to keep or the BLEG effect will rule.

If stuff cost $$ to keep, the richest piles would belong to the richest people, Larry Ellison would have an island covered with stuff - OH, he has that now?

Comment Re:Bacteria spread via the air (Score 1) 118

Yes, it depends on the anti-corrosion additives that are in the water. The proper ones block copper oxidation. Back when I was a young engineer, we had a boiler system that was protected this way, and we took samples evry month and sent them off to the boiler chemical company, who then sent us a list of actions to rebuild the additive prifile.

I expect external cooling towers are much the same, as this search reveals.
Just text to schedule, add the chemicals and all is well.

Comment Re:Bacteria spread via the air (Score 1) 118

Proper antibacterial design, with maintenance, never provides a growth medium for whatever bacteria the winds bring in = no films in the first place. Sadly, human nature and bad maintenance = eventual fail mode = biofilms and mats can form that constantly shed bacteria into the air flow.

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