Please take a moment to look over the circuti below:
As you can see, the circuit is nothing more than a 10 volt power supply and a diode. Note that the power supply negative terminal and the diode anode terminal are not connected to anything. Also note that a multimeter is connected across the diode with the purpose of measuring voltage.
Based on the circuit above, what voltage amount would you expect the multimeter to measure? Zero volts? Well, as it turns out, the multimeter actually measures around 850mv. This is puzzling to me because the circuit is not complete so no current should be flowing through the diode therefore the voltage drop on the diode should be zero right?
Could someone explain this phenomenon?
Per user request, here is a picture of the setup: