The Zeeman lab involves analyzing circular rings from a Fabry-Perot spectrometer. A key quantity involves the areal difference between concentric rings (area of the outer ring minus the area of the inner ring). Suppose you are measuring the normal Zeeman effect (where the photons emerge perpendicular to the magnetic field axis) with the photons o- polarized (also perpendicular to the field axis). D Question 1 2 pts Suppose that you apply a field of B=833 mT, yielding two first-order rings with diameters of d1,a = 7.05 cm and d1,b = 8.38 cm. The areal difference between these two rings is 61,ab = _cm2 (Note: this answer is not a ratio, hence it has units as given.)