What happens if you freeze CooliPi in liquid Nitrogen? See a video on YouTube!

The video was cut using OpenShot on a Raspberry Pi 4 4GB

If you don't have liquid Nitrogen at hand, you can use a dish, water and freeze the CooliPi upside down in the water in your refrigerator. You can calculate then the phase transition energy of ice-liquid water, using temperature logging while heating up.

The temperature can be read either from /sys/class/thermal/thermal_zone0/temp file, or by using a command

vcgencmd measure_temp

in a terminal or a script. Better log them both, because strange effects might occur ;-)