What is the correct equation for calculating the frequency of red light in air?

Thread starter Anieves
Start date Jan 25, 2006
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Air Light

AI Thread Summary

To calculate the frequency of red light in air with a wavelength of 816 nm, the correct conversion is essential. The wavelength should be converted to meters as 816 nm equals 8.16 x 10^(-7) m, not 8.16 x 10^(-11) m. Using the equation F = c/wavelength, where c is 3 x 10^8 m/s, will yield the correct frequency when the units are accurate. The error in unit conversion led to incorrect frequency calculations. Accurate unit conversion is crucial for correct results in frequency calculations.

Jan 25, 2006

Anieves

If the wavelength of red light in air is 816 nm, What is it's frequency? If I use the equation F=c/wavelegth -> with c being 3 x 10^8m/s, why can't I get the right answer? I even converted the 816 nm to 8.16 x 10 ^ 11 m.

Last edited: Jan 25, 2006

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Jan 25, 2006

jamesrc

Science Advisor

Gold Member

You need to be more careful with your units:

816 nm = 816 * 10^(-9) m = 8.16 * 10^(-7) m

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