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Ntip
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I am looking at antenna theory and just came upon scalar fields. I found an site giving an example of a scalar field as measuring the temperature in a pan on a stove with a small layer of water. The temperature away from the heat source will be cooler than near it but it doesn't have a direction. That would be a scalar field. Then they said if you stir it it would have direction so be a scalar field.
I don't quite understand this which is why I also don't understand how an isotropic radiation field is a scalar field. If it decreases in intensity radially as your move away from the source, how is this not a vector field?
I don't quite understand this which is why I also don't understand how an isotropic radiation field is a scalar field. If it decreases in intensity radially as your move away from the source, how is this not a vector field?