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A liquid-crystal display (LCD) is a flat-panel device that uses liquid crystals and polarizers to modulate light. LCDs are widely used in various applications, such as TVs, computers, watches, and mobile phones.
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Learn about the origins and solutions of cubic equations, which are equations of the form ax3 + bx2 + cx + d = 0. Find out how ancient and medieval mathematicians from different cultures approached and solved cubic equations using algebra, geometry, and numerical approximations.
Learn about the quantum mechanical description that generalizes the classical action principle and sums over all possible trajectories. Find out the history, applications, advantages and disadvantages of the path integral formulation and its relation to other formalisms.
Justin Bieber is focused on family. Amid his friend and longtime collaborator Sean "Diddy" Combs' arrest, a source tells PEOPLE exclusively that the musician, 30, is keeping things centered around ...
Learn about the definition, formula, interpretation and properties of the Pearson correlation coefficient, a measure of linear correlation between two variables. See examples, scatter diagrams and related concepts such as covariance, regression and decorrelation.
The binomial distribution is the discrete probability distribution of the number of successes in a sequence of n independent experiments, each with success or failure probability p. Learn its formula, properties, moments, mode, and applications in statistics and probability theory.
A prediction system for U.S. presidential elections based on 13 true/false statements about the country and political system. Developed by historian Allan Lichtman and geophysicist Vladimir Keilis-Borok, it has correctly predicted the outcomes since 1984.