Quasar 3C-273

Spectrum

To calculate the red-shift, we divide the shifted wavelengths by the unshifted wavelengths and subtract one:

For \(H_{\alpha}\), we get:   \(\frac{7651}{6563} - 1 = 0.166\)

For \(H_{\beta}\), we get:   \(\frac{5678}{4861} - 1 = 0.168\)

For \(H_{\gamma}\), we get:   \(\frac{5072}{4340} - 1 = 0.169\)

According to Wikipedia, the correct answer is \(0.158\).

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