If you unlock your door using the remote , the courtesy lights come on inside , that's the way it is on my 1995 Ford Explorer ( also , when it is locked and I lift the drivers or front passenger door handle the courtesy lights will come on and then shut off after 20 seconds or so ) - if that is what you are referring to
automatically
If you are referring to the can light, there is a manual switch on the light that allows it to operate when the doors is closed or to automatically turn on when the door is open and then shut off when the door is closed. If the switch is in this position and the light is staying on, the switch in the door to tell it to turn off is probably not working. If you are referring to the can light, there is a manual switch on the light that allows it to operate when the doors is closed or to automatically turn on when the door is open and then shut off when the door is closed. If the switch is in this position and the light is staying on, the switch in the door to tell it to turn off is probably not working.
yes
The planet light is its internal heat.
The heat engine can convert internal energy of sea water if there is a sink at temperature lower than temperature of sea water. Since there is no such sink and hence a ship can not use the internal energy of sea water to operate the engine.
sencers work
mercury
The iMac has an internal hard drive and yes it needs it to operate.
Smooth muscles
It means 'operate the light-switch so as to cause the light to illuminate'.
i think they operate with solenoids (light detectors).
A light can operate from stand by power of a generator.