What is Rhostat? Learn How It Works

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What is Rhostat and how it works?
 
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rheostat is a kind of variable resistor,they are mainly used to vary resistance in a circuit.
 
You might mean rheostat. It is a variable resistance for controlling current.
Put it into google.
 

Thread 'Off resonance driving of a MW/RF cavity'

Hello! Let's say I have a cavity resonant at 10 GHz with a Q factor of 1000. Given the Lorentzian shape of the cavity, I can also drive the cavity at, say 100 MHz. Of course the response will be very very weak, but non-zero given that the Loretzian shape never really reaches zero. I am trying to understand how are the magnetic and electric field distributions of the field at 100 MHz relative to the ones at 10 GHz? In particular, if inside the cavity I have some structure, such as 2 plates...
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