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.
Share. Methylsulfonylmethane (MSM) is an organic sulfur-containing compound that occurs naturally in fruits, vegetables, grains, animals, and even humans. MSM has earned a lot of attention for its use as a nutritional supplement.This is due to MSMâs reputation as a potent antioxidant booster that is believed to resist oxidative damage and swelling, especially after exercise and strenuous activities.SM has earned a lot of attention for its use as a nutritional supplement. This is due to MSMâs reputation as a potent antioxidant booster that is believed to resist oxidative damage and swelling, especially after exercise and strenuous activities.