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Originally Posted by stingc
The word 'radiation' has more than one meaning. It can indicate the act of moving outward from a source, or it refers to a class of physical objects which includes light.
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And they are called "radiation" because..... ..... they radiate! See the term 'metonymy' But seriously, light can be defined in many ways. "Physical objects" is not one I'd ever use.
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Originally Posted by stingc
It doesn't mean anything to say that light IS movement.
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Maybe not to you, but to many of us dummies it conveys better what light really is. One can say it is photons or EM waves and one can say wind is molecules of air filling an area of low pressure. But both are essentailly "movement". And in my mind it conveys a meaning without the use of "jargon".
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Originally Posted by stingc
Saying light is radiation is correct, but it's is a label, not an explanation.
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Yes...
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Originally Posted by stingc
Saying that light is specifically electromagnetic radiation gets you a lot more, but only if you know electromagnetism. Otherwise, it's just more jargon.
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And since most of us don't understand EM as well as you, let's just call it "movement"
Well. ObieX seemed to like it .
