How Does Wavelength Affect Intensity in Physics?

Thread starter frede89
Start date Nov 28, 2007

AI Thread Summary

The discussion focuses on the relationship between intensity (I), power (P), area (A), and wavelength (λ) in physics. The user attempts to derive the formula for intensity, starting with the basic equation I = P/A. They express uncertainty about the correct formulation involving the derivative of power with respect to wavelength. The conversation highlights the need for clarity in how wavelength influences intensity, particularly in the context of power distribution. Ultimately, the user seeks confirmation on their understanding of the equations presented.

Nov 28, 2007

frede89

Homework Statement

Why is

I(x)= dP/dx*1/A

Where x is the wavelenght lambda. P the power, A the area and I the intensity.

The Attempt at a Solution

I=P/A is all i know..

Thanks in advance

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Nov 29, 2007

frede89

Can someone please tell me if this is the anwser:

I=P/A

I(x)=P/A (x)

I(x)= P/(x) * 1/A

I(x)= dP/dx * 1/A

The anwser must be something like this, right?

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