a scale, ranging from 1 to 10, for indicating the intensity of an earthquake.
a scale for expressing the magnitude of an earthquake in terms of the logarithm of the amplitude of the ground wave; values range from 0 to over 9 Compare Mercalli scale See also magnitude (sense 5)
A logarithmic scale used to rate the strength or total energy of earthquakes. The scale has no upper limit but usually ranges from 1 to 9. Because it is logarithmic, an earthquake rated as 5 is ten times as powerful as one rated as 4. An earthquake with a magnitude of 1 is detectable only by seismographs; one with a magnitude of 7 is a major earthquake. The Richter scale is named after the American seismologist Charles Francis Richter (1900-1985). See Note at earthquake.
Richter scale [(rik-tuhr)]
A scale used to rate the intensity of earthquakes. The scale is open-ended, with each succeeding level representing ten times as much energy as the last. A serious earthquake might rate six to eight, and very destructive quakes rate higher.
Note: No quake greater than nine has ever been recorded.
noun 1. English plantain. noun 1. a Eurasian plant, Plantago lanceolata, that has lancelike ribbed leaves, which form a rosette close to the ground, and a dense spike of small white flowers: family Plantaginaceae Also called ribgrass See also plantain1
noun 1. ribbed vault. ribbed vault noun, Architecture. 1. a vault supported by or decorated with diagonal ribs.
noun 1. clearweed. 2. horse balm.
noun, Chemistry. 1. a white, poisonous, protein powder from the bean of the castor-oil plant. noun 1. (biochem) a highly toxic protein, a lectin, derived from castor-oil seeds: used in experimental cancer therapy ricin ri·cin (rī’sĭn, rĭs’ĭn) n. A poisonous protein that is extracted from the castor bean and is used as a biochemical reagent. […]