scott wrote:
>> for a wide band with low energy at any specific single wavelength to
> 
> How can you have a "wide band" at a specific single wavelength?  Surely 
> the definition of a "band" is a range of wavelengths?
> 
> Sure, if the peak is at 600 nm, then the energy in the band from 599.99 
> to 600.01 will most likely be less than the band from 100 to 599.

What I actually meant was that a "peak" is just one wavelength with a 
lot of energy. The band containing the peak isn't necessarily the band 
with the highest total energy.

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