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Vor einem Tag · Dark matter is classified as "cold", "warm", or "hot" according to its velocity (more precisely, its free streaming length). Recent models have favored a cold dark matter scenario, in which structures emerge by the gradual accumulation of particles.
Vor einem Tag · Psychopathy is a personality disorder of affective, interpersonal, and behavioral dimensions that begins in childhood and manifests as aggressive actions in early or late adolescence. Childhood trauma affects vulnerability to different forms of psychopathology and traits associated with it.
Vor einem Tag · Totalitarianism. Totalitarianism is a political system and a form of government that prohibits opposition political parties, disregards and outlaws the political claims of individual and group opposition to the state, and controls the public sphere and the private sphere of society. In the field of political science, totalitarianism is the ...
Vor einem Tag · Great Expectations is full of extreme imagery—poverty, prison ships and chains, and fights to the death—and has a colourful cast of characters who have entered popular culture. These include the eccentric Miss Havisham, the beautiful but cold Estella, and Joe Gargery, the unsophisticated and kind blacksmith.
Vor einem Tag · The Strategic Defense Initiative ( SDI ), derisively nicknamed the Star Wars program, was a proposed missile defense system intended to protect the United States from attack by ballistic nuclear missiles. The concept was announced in 1983, by President Ronald Reagan, [1] a critic of the doctrine of mutual assured destruction (MAD), which he ...
Vor einem Tag · An atomic clock is a clock that measures time by monitoring the resonant frequency of atoms. It is based on atoms having different energy levels. Electron states in an atom are associated with different energy levels, and in transitions between such states they interact with a very specific frequency of electromagnetic radiation. This phenomenon serves as the basis for the International System ...
Vor einem Tag · Africa straddles the equator and the prime meridian. It is the only continent to stretch from the northern temperate to the southern temperate zones. [14] The majority of the continent and its countries are in the Northern Hemisphere, with a substantial portion and a number of countries in the Southern Hemisphere. Most of the continent lies in the tropics, except for a large part of Western ...
