logarithmic scale
measurement scale based on orders of magnitude
magnitude
logarithmic measure of the brightness of an astronomical object
seismic scale
scale used to calculate and compare the severity of earthquakes
Richter scale
measuring the strength ("size") of earthquakes
Japanese Meteorological Agency magnitude scale
method for measuring earthquake magnitudes
logarithmic timeline
timeline laid out according to a logarithmic scale
surface wave magnitude
Earthquake measurement scale
photographic magnitude
astronomical magnitude measured with photographic plate
limiting magnitude
faintest apparent magnitude of a celestial body that is detectable or detected by a given instrument
moment magnitude scale
measure of earthquake size, in terms of the energy released
American wire gauge
North American standard for electrical wire diameters