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2021 Fukushima earthquake. / 37.720; 141.762. Multiple. The largest is an Mw 6.0. An intense and deadly seismic event struck offshore east of Tōhoku, Japan. The M JMA 7.3 or M w 7.1 earthquake occurred on a Saturday night at 23:07 JST (14:07 UTC) on 13 February at a focal depth of 44.0 kilometers (27.3 mi). [6]
The Intensity 7 ( 震度7, Shindo 7) is the maximum intensity in the Japan Meteorological Agency seismic intensity scale, covering earthquakes with an instrumental intensity (計測震度) of 6.5 and up. [ 15] At Intensity 7, it becomes impossible to move at will. [ 13] The intensity was created following the 1948 Fukui earthquake.
Chromium is the 21st [38] most abundant element in Earth's crust with an average concentration of 100 ppm. It is also the seventh most abundant element on earth. [39] Chromium compounds are found in the environment from the erosion of chromium-containing rocks, and can be redistributed by volcanic eruptions.
December 8, 1972. The Breakers is a Gilded Age mansion located at 44 Ochre Point Avenue, Newport, Rhode Island, US. It was built between 1893 and 1895 as a summer residence for Cornelius Vanderbilt II, a member of the wealthy Vanderbilt family . The 70-room mansion, with a gross area of 138,300 square feet (12,850 m 2) and 62,482 square feet ...
e. A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in. [1] The term seems to have been first used by Charles Janet. [2] Each block is named after its characteristic orbital: s-block, p-block, d-block, f-block and g-block . The block names (s, p, d, and f) are derived ...
A circuit breaker is an electrical safety device designed to protect an electrical circuit from damage caused by current in excess of that which the equipment can safely carry ( overcurrent ). Its basic function is to interrupt current flow to protect equipment and to prevent fire. Unlike a fuse, which operates once and then must be replaced, a ...
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
Thermal cutoff. An assortment of thermal fuses. A thermal cutoff is an electrical safety device (either a thermal fuse or thermal switch) that interrupts electric current when heated to a specific temperature. These devices may be for one-time use (a thermal fuse), or may be reset manually or automatically (a thermal switch).