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I suggested that we might compare earthquakes in terms of the measured amplitudes recorded at these stations, with an appropriate correction for distance. ↗
If one introduces the concept of energy of an earthquake then that is a theoretically derived quantity. ↗
If the assumptions used in calculating energy are changed, then this seriously affects the final result, even though the same body of data might be used. ↗
There is another common misapprehension that the magnitude scale is itself some kind of instrument or apparatus. Visitors will frequently ask to 'see the scale.' ↗
