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In Reply to: RE: It's there in black and white. posted by cpotl on August 25, 2014 at 03:32:32
It's an analogy because he's not measuring D directly, he's measuring an analogue of it.
Mark Kelly
Follow Ups:
"It's an analogy because he's not measuring D directly, he's measuring an analogue of it."Hmmm...I suppose it comes down to semantics, really. By the same token, one could say that he's not measuring the current directly, but an analogue of it, since he is actually measuring the voltage drop across a resistor, and then using Ohm's law.
In one case Ohm's law is used, in the other case, a Maxwell equation.
If one starts on that path, then in the end all of life and existence is just an analogy, with the only "measurements" being our conscious perceptions in the mind...
Chris
Edits: 08/25/14
"If one starts on that path, then in the end all of life and existence is just an analogy"
You're lucky Ayn Rand is no longer with us. :)
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