Here's the output of sensors command:thinkpad-isa-0000Adapter: ISA adapterfan1:        3414 RPMcoretemp-isa-0000Adapter: ISA adapterPhysical id 0:  +50.0C  (high = +86.0C, crit = +100.0C)Core 0:         +47.0C  (high = +86.0C, crit = +100.0C)Core 1:         +49.0C  (high = +86.0C, crit = +100.0C)acpitz-virtual-0Adapter: Virtual devicetemp1:        +49.0C  (crit = +99.0C)What is the Physical id 0 device, and how does the virtual device works here? Where does the data come from?
Understanding different fields of output of sensors
hardware;temperature