mufc4ever
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1. Homework Statement
Determine the dispersion (dn/d lambda) at a wavelength of 800 nm from fitting equation.
2. Homework Equations
Fitting equation from graph of n vs 1/lambda^2
y = 7e-15 x + 1.60
3. The Attempt at a Solution
Since it is a plot of n vs 1/lambda^2 I thought that x would be 1/lambda^2 so I took the derivative of that to get -2/lambda^3 and then put in the number. However I did not get a correct answer consistent with earlier findings.
What am I doing wrong?
Determine the dispersion (dn/d lambda) at a wavelength of 800 nm from fitting equation.
2. Homework Equations
Fitting equation from graph of n vs 1/lambda^2
y = 7e-15 x + 1.60
3. The Attempt at a Solution
Since it is a plot of n vs 1/lambda^2 I thought that x would be 1/lambda^2 so I took the derivative of that to get -2/lambda^3 and then put in the number. However I did not get a correct answer consistent with earlier findings.
What am I doing wrong?