First demonstration of antimatter wave interferometry

Matter waves constitute a crucial feature of quantum mechanics, in which particles have wave properties in addition to particle characteristics. This wave-particle duality was postulated in 1924 by the French physicist Louis ...

Texas votes to change science lessons challenging evolution

The Texas Board of Education has preliminarily voted to ease—but not completely eliminate—state high school science curriculum requirements that experts argued cast doubt on the theory of evolution.

Texas mulls changing science standards questioning evolution

The Texas Board of Education will decide whether to scrap a requirement that public schools teach high school students to scrutinize "all sides" of scientific theory after hearing Tuesday from academics who say that was meant ...

How "The Big Bang Theory" portrays scientists

Love it or hate it, you've probably at least heard of CBS's hit TV show The Big Bang Theory, now in its 10th year of production. But how accurately does it portray scientific culture, and does it break or reinforce stereotypes? ...

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Scientific theory

In the sciences generally, a scientific theory (the same as an empirical theory) is constructed from elementary theorems that consist in empirical data about observable phenomena. A scientific theory is used as a plausible general principle or body of principles offered to explain a phenomenon.

A scientific theory is a deductive theory, in that, its content is based on some formal system of logic and that some of its elementary theorems are taken as axioms. In a deductive theory, any sentence which is a logical consequence of one or more of the axioms is also a sentence of that theory.

A major concern in construction of scientific theories is the problem of demarcation, i.e., distinguishing those ideas that are properly studied by the sciences and those that are not.

Theories whose subject matter consists not in empirical data, but rather in ideas are in the realm of philosophical theories as contrasted with scientific theories. At least some of the elementary theorems of a philosophical theory are statements whose truth cannot necessarily be scientifically tested through empirical observation.

Theories are intended to be an accurate, predictive description of the natural world. However, it is sometimes not clear whether the conclusions derived from the theory inform us about the nature of the world, or the nature of the theory.

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