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I dug up my trusty non-contact thermometer (because none of the other thermometers I have could measure below -20C), then turned one of those "compressed gas dusters" upside down and sprayed the liquid into a spot on the desk.
I managed to get it down to -35F (-37.2C)!
Interestingly, if you spray enough of the liquid into one spot, it forms a white frost, which is NOT ice. If you drop the frost into water, it boils, so I assume it's dry ice, or something like it.
I managed to get it down to -35F (-37.2C)!
Interestingly, if you spray enough of the liquid into one spot, it forms a white frost, which is NOT ice. If you drop the frost into water, it boils, so I assume it's dry ice, or something like it.
