Relate wavelength and energy scale

[mfb]

$\delta \lambda$ and $\delta \nu$ are different things, you cannot simply replace them.

 

[senobim]

of course.

λ = c/ν, ν=c/λ --> do I nead to integrate over this range this time? c/λ and c/λ + c/δλ

 

[mfb]

c/λ and c/λ + c/δλ

a/(b+c) and a/b + a/c are not the same.

 

[senobim]

c/λ and c/λ + δ(c/λ)?

 

[mfb]

What does δ(c/λ) mean?

 

[senobim]

some different freaquency from c/λ

or I need to define different freaquency just c/λ₂

and the range will be c/λ and c/λ₂