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Posted

Neato!

 

Of course--except for those of you who foolishly ignore all disclaimers--touching dry ice directly will burn your hands, so some care needs to be exercised with this experiment...

 

Any society that needs disclaimers has too many lawyers, :phones:

Buffy

Posted

Let me know what you think!

 

John Mark

Cool video! Adding a little dishwashing soap sure changes the effect.

 

And welcome to hypography, John :) Please feel free to start a topic in the introductions forum to tell us something about yourself.

 

Of course--except for those of you who foolishly ignore all disclaimers--touching dry ice directly will burn your hands, so some care needs to be exercised with this experiment...

Ah, c’mon Buffy - kid’s learn best by experience though moderate foolishness: let ‘em touch some CO2 ice, and they’ll lean that it can “burn” – actually freeze, but the blistering and sloughing off dead skin for days effect is similar to a burn, itself an educational experience.

 

There was once a common device, now little known now that good roads and fast delivery services make it cheaper and easier to ship whatever size block of CO2 dry ice we need, for making small amount of dry ice for lab and medical needs. It consisting of a collar with a pin and a net that attached to the nozzle of a small cylinder of CO2. When the pin pierced the cylinders cap, the expanding gass it dropped below freezing, and little chunks of dry ice were caught in the net. I learned the best (AKA the hard) way about heeding the warning in instructions the first time I used one of these with the little metal cylinder resting in the palm of my hand, but it did leave me with a lasting intuitive feel for the gas laws. ;)

Posted

Ah, c’mon Buffy - kid’s learn best by experience though moderate foolishness: let ‘em touch some CO2 ice, and they’ll lean that it can “burn” – actually freeze, but the blistering and sloughing off dead skin for days effect is similar to a burn, itself an educational experience.

 

Oh I'm all for letting kids hurt themselves to learn what hurts, but in the wrong location it can be a little more than minor if enough male rough-housing is applied... :evil:

 

 

Break your neck, put somebody's eye out....PNEUMONIA, :phones:

Buffy

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