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The Greek alphabet on a black-figure pottery vessel, with an archaic chickenfoot-shaped psi.. Psi / ˈ (p) s aɪ, ˈ (p) s iː / (P)SY, (P)SEE [1] (uppercase Ψ, lowercase ψ or 𝛙; Greek: ψι psi) is the twenty-third and penultimate letter of the Greek alphabet and is associated with a numeric value of 700.
a symbol for psychology; the wave function in the Schrödinger equation of quantum mechanics [68] represents: the J/psi mesons in particle physics; the stream function in fluid dynamics; the reciprocal Fibonacci constant [69] the second Chebyshev function in number theory [70] the polygamma function in mathematics [71] the supergolden ratio [72]
differential vector element of surface area A, with infinitesimally small magnitude and direction normal to surface S: square meter (m 2) differential element of volume V enclosed by surface S: cubic meter (m 3) electric field: newton per coulomb (N⋅C −1), or equivalently, volt per meter (V⋅m −1)
The most common symbols for a wave function are the Greek letters ψ and Ψ (lower-case and capital psi, respectively). Wave functions are complex-valued . For example, a wave function might assign a complex number to each point in a region of space.
Psi (Ѱ, ѱ; italics: Ѱ ѱ) is a letter in the early Cyrillic alphabet, derived from the Greek letter of the same name (Ψ, ψ). It represents the sound /ps/, as in English naps .
More than 38 million Americans have diabetes, and between 90% and 95% of them have type 2 diabetes. While most are adults over the age of 45, an increasing number of children and teens are also ...
But using the names kilogram, gram, kilogram-force, or gram-force (or their symbols) as units of force is deprecated in SI. The technical atmosphere (symbol: at) is 1 kgf/cm 2 (98.0665 kPa, or 14.223 psi). Pressure is related to energy density and may be expressed in units such as joules per cubic metre (J/m 3, which is equal to Pa).
Eat nutrient-dense foods 75% of the time, and fill the remaining 25% of your diet with small portions of the other foods and treats you enjoy, White shares. Ahead, check out the top foods and ...