Examples of numbers of different magnitudes can be found at Orders of magnitude (numbers). They have irregular periods with amplitudes of several magnitudes. They undergo nova-like outbursts with amplitudes of up to 4 magnitudes. The absolute magnitudes of galaxies can be much lower (brighter). The subsequent pairs are found by using eigenvalues of decreasing magnitudes. These are large scale earthquakes that have seismic magnitudes as high as 6.1. Thus, earthquakes with magnitudes much larger than 8 are not possible. Its brightness fluctuates by around 0.04 magnitudes. Using distance moduli makes computing magnitudes easy. The following describes the typical effects of earthquakes of various magnitudes near the epicenter. The Space Needle will not sustain serious structural damage during earthquakes of magnitudes below 9.1. Some of the listed magnitudes are approximate. The Satara District experiences earthquakes of minor magnitudes. It is a semiregular variable varying from magnitudes 6.35 to 6.45. Greek mathematicians termed this ratio of incommensurable magnitudes "alogos", or inexpressible.