Ok, here's my thoughts.... In the ep where they're pulling Teal'c out of the buffer, they only use the top section of the DHD sitting on a table, and there was definitely wiring running from it to the gate. However, in the ep WaterGate, the Russians had the entire DHD, pedestal and all, and there was no wiring.
The following is entirely speculation, but it goes a long way to explaining the operation of DHD's and gates.
In the real-world, the most efficient way to introduce a current into a superconducting ring is through magnetic inductance. My guess is that the pedestal of the DHD houses a naquadah reactor, some magnetic coils and the subspace communication circuitry necessary for the correlative updates (as seen in Avenger 2.0). The gate and DHD are magnetically coupled both for energy supply and communication.
The other possibility is that there is a coil around the buried part of the gate and a buried coil under the DHD.
That example from "Off the Grid" has several elements that don't make sense. Not only is there no wiring under the DHD, but there is also GRASS. How is it that a large stone/metal pedestal that has been sitting in the same place for hundreds, if not thousands of years has live grass under it? The weight of the prop obviously laid the grass flat, but it's very presence is a problem. I've moved enough heavy junk, fallen logs, etc through the years to know that it only takes a few days for something to kill the grass underneath it. Heck, my parents wouldn't let my sister and I use our slip and slide anymore after using it for just half a day killed a long rectangle of grass in the back yard.
The following is entirely speculation, but it goes a long way to explaining the operation of DHD's and gates.
In the real-world, the most efficient way to introduce a current into a superconducting ring is through magnetic inductance. My guess is that the pedestal of the DHD houses a naquadah reactor, some magnetic coils and the subspace communication circuitry necessary for the correlative updates (as seen in Avenger 2.0). The gate and DHD are magnetically coupled both for energy supply and communication.
The other possibility is that there is a coil around the buried part of the gate and a buried coil under the DHD.
That example from "Off the Grid" has several elements that don't make sense. Not only is there no wiring under the DHD, but there is also GRASS. How is it that a large stone/metal pedestal that has been sitting in the same place for hundreds, if not thousands of years has live grass under it? The weight of the prop obviously laid the grass flat, but it's very presence is a problem. I've moved enough heavy junk, fallen logs, etc through the years to know that it only takes a few days for something to kill the grass underneath it. Heck, my parents wouldn't let my sister and I use our slip and slide anymore after using it for just half a day killed a long rectangle of grass in the back yard.
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