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television (TV), a form of mass media based on the electronic delivery of moving images and sound from a source to a receiver. By extending the senses of vision and hearing beyond the limits of physical distance, television has had a considerable influence on society. Conceived in the early 20th century as a possible medium for education and ...
2024年4月10日 · solipsism, in philosophy, an extreme form of subjective idealism that denies that the human mind has any valid ground for believing in the existence of anything but itself. The British idealist F.H. Bradley, in Appearance and Reality (1893), characterized the solipsistic view as follows: I cannot transcend experience, and experience must be my ...
- The Editors of Encyclopaedia Britannica
As the head of the government of the United States, the president is arguably the most powerful government official in the world. The president is elected to a four-year term via an electoral college system. Since the Twenty-second Amendment was adopted in 1951, the American presidency has been
On This Day In History: anniversaries, birthdays, major events, and time capsules. This day's facts in the arts, politics, and sciences. On this day in 1862, U.S. President Abraham Lincoln signed the Homestead Act, which provided 160 acres of public land virtually free of charge to those who had lived on and cultivated the land for at least five years.
2024年4月29日 · thalamus, either of a pair of large ovoid organs that form most of the lateral walls of the third ventricle of the brain. The thalamus translates neural impulses from various receptors to the cerebral cortex. While the thalamus is classically known for its roles as a sensory relay in visual, auditory, somatosensory, and gustatory systems, it ...
4 天前 · psychology, scientific discipline that studies mental states and processes and behaviour in humans and other animals. The discipline of psychology is broadly divisible into two parts: a large profession of practitioners and a smaller but growing science of mind, brain, and social behaviour. The two have distinctive goals, training, and ...
3 天前 · Racism, the belief that humans may be divided into separate and exclusive biological entities called ’races’; that there is a causal link between inherited physical traits and traits of personality, intellect, morality, and other cultural and behavioral features; and that some races are innately superior to others.
