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Pyromania. Pyromania is an impulse control disorder in which individuals repeatedly fail to resist impulses to deliberately start fires, [1] to relieve some tension or for instant gratification. The term pyromania comes from the Greek word πῦρ ( pyr, 'fire'). Pyromania is distinct from arson, the deliberate setting of fires for personal ...
Rare-earth element. Refined rare-earth oxides are heavy, gritty powders usually brown or black, but can be lighter colors as shown here. The rare-earth elements ( REE ), also called the rare-earth metals or rare earths or, in context, rare-earth oxides, and sometimes the lanthanides (although scandium and yttrium, which do not belong to this ...
To-Shin Do is a martial art founded by Black Belt Hall of Fame instructor Stephen K. Hayes in 1997. [1] [2] It is a modernized version of ninjutsu, and differs from the traditional form taught by Masaaki Hatsumi ’s Bujinkan organization. [3] Instruction focuses on threats found in contemporary western society. [4]
A rumor, which Chipotle denied, later emerged that the chain had instructed employees to give bigger portions to people recording them, sparking a flurry of videos across social media, especially ...
Shinto. The torii gateway to Itsukushima Shrine in Hiroshima Prefecture, Japan, one of the most famous examples in the country. [1] Torii mark the entrance to Shinto shrines and are recognizable symbols of the religion. Shinto ( Japanese: 神道, romanized : Shintō) is a religion originating in Japan. Classified as an East Asian religion by ...
An extended periodic table theorizes about chemical elements beyond those currently known and proven. The element with the highest atomic number known is oganesson ( Z = 118), which completes the seventh period (row) in the periodic table. All elements in the eighth period and beyond thus remain purely hypothetical.
An overview of one of the regolith-hosted rare earth element deposits (a type of Rare Earth Element mine) in South China. Regolith-hosted rare earth element deposits (also known as ion-adsorption deposits) are rare-earth element (REE) ores in decomposed rocks that are formed by intense weathering of REE-rich parental rocks (e.g. granite, tuff etc.) in subtropical areas.
Of the 94 natural elements, eighty have a stable isotope and one more has an almost-stable isotope (with a half-life of 2.01×10 19 years, over a billion times the age of the universe). [32] [c] Two more, thorium and uranium , have isotopes undergoing radioactive decay with a half-life comparable to the age of the Earth .