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"W7TI" wrote in message ... On 28 Oct 2003 16:18:17 -0800, (jj) wrote: Does anyone have a good description for what a radio wave really is? __________________________________________________ _______ The short answer is "no". Many people confuse the measurement of things with having an understanding of them. Scientists are very good at measuring things; less good at understanding what they measure. For example, gravity is measurable down to a gnat's eyelash, but nobody knows what it really "is". -- Bill, W7TI It would be more accurate to say that we can measure gravity's effect, not that we can measure gravity itself. Same for an electromagnetic field. We have great models for predicting the effects; some models are so good we call them Laws. Beyond that, before you know exactly what a field is, do you really know what ANYTHING really is? How about a copper wire? What really is copper? Will you find the answer if you can look smaller & smaller? Will you eventually disturb the observation just by observing? How do we know anything? Questions like this are best treated with beer. Ed wb6wsn |
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