A biography for Charles Francis Richterhasn’t been written yet.
“For example, some stars put out large amounts of energy in the infrared part of the spectrum, so that this can produce a different relative magnitude rating than using light energy from the middle of the spectrum.”
“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.”
“Intensity like signal strength will generally fall off with distance from the source, although it also depends on the local conditions and the pathway from the source to the point.”