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Setup parameters
During all demos the reference end of the type T thermocouple was held at 22°C.
The sample was submerged in the liquid nitrogen (boiling point −195.79°C ).
Note that multimeter display units (mV or V, A or mA) according to the switch settings. I.e. if switch is set to 200mV DC, the displayed unit is mV.
Meissner effect
Demo 1 with the measurement setup description
Cooling the sample and warming up (14 minutes long)
Demo 2
Cooling the sample and warming up (4:54 minutes long)
Checking on a sample after some warming up, sample is below water freezing point (1:04 minutes long)
Sample is above water freezing point but below dew point (0:57 minutes long)
Sample is above water dew point (0:52 minutes long)
Sample is closer to room temperature (0:31 minutes long)
Demo 3
Cooling and warming up (6:30 minutes long)
Demo 4
Cooling and warming up (5:30 minutes long)
Demo 5
Cooling and warming up (8:54 minutes long)
Demo 6
Cooling from the room temperature and warming up (14 minutes long). Note that current settings were switched around 1m20s to avoid amperemeter overload, the voltage drop monitoring multimeter was adjusted to be more sensitive
around 8m20s.