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A more formal definition might be: a sufficiently stable electrically neutral group of at least two atoms, in a definite arrangement, held together by very strong chemical bonds. A molecule may consist of atoms of the same chemical element (e.g. oxygen: O 2) or of different elements (e.g. water: H 2 O).
This glossary of physics is a list of definitions of terms and concepts relevant to physics, its sub-disciplines, and related fields, including mechanics, materials science, nuclear physics, particle physics, and thermodynamics.
All physical quantities in the International System of Units (SI) are expressed in terms of combinations of seven fundamental physical units, which are units for: length, mass, time, electric current, temperature, amount of a substance, and luminous intensity. SI Units: Fundamental and Derived Units.
Mar 5, 2013 · STANDARD MODEL A set of equations that describes forces of nature in terms of elementary particles, known as fermions, interacting by tossing blobs of energy called bosons at one another in a sort ...
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Set theory is the branch of mathematical logic that studies sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory — as a branch of mathematics — is mostly concerned with those that are relevant to mathematics as a whole.
Jan 18, 2021 · Math. Let's Talk Science. January 18, 2021. 3.82. Share on: Learn about how we can describe sets and subsets of numbers. Set Theory. Sets. A set is a collection of things, which could be numbers. Set Theory is the study of sets and the properties they have. The things that make up a set are called the elements of the set.
May 2, 2024 · In naive set theory, a set is a collection of objects (called members or elements) that is regarded as being a single object. To indicate that an object x is a member of a set A one writes x ∊ A, while x ∉ A indicates that x is not a member of A.
