There are two types of body waves: compressional (P) waves and shear (S) waves. Primary waves (P-waves) travel the fastest, so they arrive at the recording station (seismograph) first. Secondary or shear waves (S-waves) travel slower than P-waves so they arrive second.
Modified frequency modulation (MFM) is an encoding scheme used by PC floppy disk drives and older hard drives.
- MFM. Which airport is MFM? MFM is officially named Macau Intl., and is located in the city of Macau. Over 31 airline carriers fly approximately 17 flights per week. Which airline flies the most flights to MFM?The top airline carrier flying out of Macau Intl. is Air China and they fly over 748 flights every month.