了解传感器输出的不同领域

Question

这是命令的输出sensors：

thinkpad-isa-0000
Adapter: ISA adapter
fan1:        3414 RPM

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +50.0°C  (high = +86.0°C, crit = +100.0°C)
Core 0:         +47.0°C  (high = +86.0°C, crit = +100.0°C)
Core 1:         +49.0°C  (high = +86.0°C, crit = +100.0°C)

acpitz-virtual-0
Adapter: Virtual device
temp1:        +49.0°C  (crit = +99.0°C)

设备是什么Physical id 0？虚拟设备在这里如何工作？数据从哪里来？