Re: What types of RESONANCE are there ?


CWatters wrote:
> "Randy Poe" <poespam-trap@xxxxxxxxx> wrote in message
> news:1113318814.873074.72210@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> >
> > Y.Porat wrote:
> > > if you heat a metal untill a certain temperature
> > > it starts to 'light' ie emitting em waves
> >
> > All bodies at all temperatures emit broad spectra
> > of em radiation.
> >
> > > that migh tbe thermal resonance!
> >
> > No, it's not resonance. It's not a narrow emission
> > line.
>
> Sodium street lamp?

Or neon lamp? Or He-Ne laser?

None of those things involve "heating a metal until it
starts to light". Porat is talking about thermal
radiation which is by definition blackbody radiation.

- Randy

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