## A Conversation for The Electromagnetic Spectrum

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### A798717 - The Electromagnetic Spectrum

trebor Posted Nov 3, 2003

This is the first time I've done this so I hope my comments are pertinent.

1/ You state that the EM wave propogates at the "speed of light" as if this is an absolute whereas it depends on the medium through which the wave is propogating. it might help to indicate this.

2/technically energy is proportional to frequency (in the mathematical sense of the word)

hope that is helpful. otherwise I thought it was a nice layman intro to the subject.

### A798717 - The Electromagnetic Spectrum

Oetzi Oetztaler....Anti Apartheid Posted Nov 3, 2003

trebor could you expand on point 2 please..not complete that statement is it?

### A798717 - The Electromagnetic Spectrum

trebor Posted Nov 3, 2003

The point I was trying to make is that as E=hv, where E means energy, h is a constant and v means frequency, the technical term for this relationship is proportionality not equivalence. This is using the words proportional and equivalent with their mathematical definitions rather than layenglish so maybe i was just being a pedantic mathematical physicist sorry

### A798717 - The Electromagnetic Spectrum

Oetzi Oetztaler....Anti Apartheid Posted Nov 3, 2003

Got ya..thanks. I like this stuff. Think the site would be the better for similar articles. Hint...Hint!

### A798717 - The Electromagnetic Spectrum

trebor Posted Nov 3, 2003

well am thinking of writing my own entry ( possibly on euclids

parallel postulate) but think i definitately need to get the hang of this place a little more before i give that a go!

### A798717 - The Electromagnetic Spectrum

Oetzi Oetztaler....Anti Apartheid Posted Nov 3, 2003

There's nowt much to know. I ain't been here that long either.

What do you want to know?

### A798717 - The Electromagnetic Spectrum

Monsignore Pizzafunghi Bosselese Posted Nov 3, 2003

Thanks everybody for the comments!

Alas, I didn' get around this on last weekend, and I'm afraid next week doesn't look better, so I'll better take this back from PR for the meantime.

Bossel

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### A798717 - The Electromagnetic Spectrum

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