yes it is because everybodys obese
Walk on hard ground. There is no way to keep them from sinking in soft or grass areas. You have to watch where you step.
Italy ins't sinking. Sea levels are rising. Venice issinking though, becasu eit is built on sticks, which are sinking into the ground.
Rome
Mexico City
Sinking ground is called subsidence.
subsidence.
Its called "Landslides"
An NPN or sinking output accepts voltage and sinks it to ground to complete the circuit. A PNP or sourcing output sources voltage and the external circuit sinks it to ground to complete the circuit. A sourcing circuit would be drawn as voltage->switch->load->ground. A sinking circuit would be drawn as Voltage->load->switch->ground. In these cases, the switch could be a transistor.
the sinking of a ship
subsidence
PNP is sourcing. NPN is sinking. You generally connect NPN to ground and your PLC(or any load)input. With PNP you connect to V+ and to your PLC. Your PLC (load) should have the same ground or V+. Sourcing (PNP) provides a path to +24DC generally. Sinking (NPN) provides a path to 0V DC.
The mysterious sinking of the USS Maine.