A

atomic mass number
en:atomic mass number

(chemistry, physics) abbreviation of atomic mass number: mass number, nucleon number


A

International System of Units
International System of Units

(physics, International System of Units) Ampere, a unit of electrical current.


f

Modification of upper case Latin letter F, from Greek Ϝ (W, “Digamma”), from Phœnician 𐤅 (W, “waw”), the ultimate source being probably Egyptian.


e

Close-mid front unrounded vowel
e
e (mathematical constant)

Pronunciation of IPA [eː]

Modification of capital letter E in uncial script, from Ancient Greek Ε (E, epsilon).


c

(physics) The speed of light, 2.99792458 × 10⁸ m/s.


k

Pronunciation of IPA [kɑː, ɑkkɑː] with the sound [k]

(physics) The spring constant of an elastic material.


n

From the old Latin N, from the Greek Ν (nu), from an archaic reversed Greek N, from the Phoenician symbol 𐤍; possibly from an earlier Egyptian hieroglyph of a resting Egyptian cobra, D (𓆓).


r

Pronunciation of IPA [rɑː, ɑrrɑː] with the sound [r]

(physics) relative. E.g. vr or vᵣ for relative velocity.


v

Pronunciation of IPA [ɑvvɑʔ] with the sound [v]


Cd

(physics) The drag coefficient, describing a characteristic amount of aerodynamic drag caused by fluid flow.


μg

(physics) misspelling of µG (“microgauss”)


η

coefficient of viscosity
coefficient of viscosity

(chemistry, physics) The coefficient of viscosity.

Sommerfeld parameter
Sommerfeld parameter


ℎ

Max Planck wrote h for German Hilfsgrösse.

(physics) The symbol for Planck's constant.


var

(physics, electrics) alternative form of VAR


B

magnetic flux density
magnetic flux density


Ba

(physics) The CGS symbol for barye, unit of pressure.


Bi

(electricity, physics, dated) Abbreviation of biot.


C

* (element symbol, carbon): abbreviation
* (metrology, coulomb): abbreviation
* (computing, hexadecimal 12): From its position as the twelfth element of the series {1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F}


E

From the Etruscan letter 𐌄 (e, “e”), from the Ancient Greek letter Ε (E, “epsilon”), derived from the Phoenician letter 𐤄 (h, “he”), from the Egyptian hieroglyph 𓀠.


F

From the Etruscan letter 𐌅 (v, “ve”), from the Ancient Greek letter Ϝ (W, “digamma”), derived from the Phoenician letter 𐤅 (w, “waw”), from the Egyptian hieroglyph 𓏲.


G

From a modification of the Latin letter C (“ce”), from the Etruscan letter 𐌂 (c, “ce”), from the Ancient Greek letter Γ (G, “gamma”), derived from the Phoenician letter 𐤂 (g, “giml”), from the Egyptian hieroglyph 𓌙.

gravitational constant
gravitational constant

(physics) The gravitational constant in the formula F = Gm₁m₂/r²; sometimes called "big G" to distinguish from g for the acceleration of gravity.


H

From the Etruscan letter 𐌇 (h, he), from the Ancient Greek letter Η (Ē, eta), derived from the Phoenician letter 𐤇 (ḥ, het), from the Egyptian hieroglyph 𓈈 or maybe 𓉗.

electrical inductance
electrical inductance

(physics) henry, a unit for measurement of electrical inductance in the International System of Units.


I

From the Etruscan letter 𐌉 (i), from the Ancient Greek letter Ι (I, iota), derived from the Phoenician letter 𐤉 (y, yod), from the Egyptian hieroglyph 𓂝.

(physics, electronics) Electrical current.

(physics, kinematics) moment of inertia.


Jy

(physics) Symbol for jansky, a unit of flux density.


L

From the Etruscan letter 𐌋 (l, “el”), from the Ancient Greek letter Λ (L, “lambda”), derived from the Phoenician letter 𐤋 (l, “lamed”), from the Egyptian hieroglyph 𓌅.

(astronomy, physics, measurement, cgs) lambert


Mu

(chemistry, physics) The chemical symbol for muonium (antimuon–electron pair pseudo-element; not the muon–antimuon onium pair (muononium))


N

From the Etruscan letter 𐌍 (n, en), from the Ancient Greek letter Ν (N, nu), derived from the Phoenician letter 𐤍 (n, nun), possibly from the Egyptian hieroglyph 𓆓.


P

From the Etruscan letter 𐌐 (p, “pe”), from the Ancient Greek letter Π (P, “pi”), derived from the Phoenician letter 𐤐 (p, “pe”), from the Egyptian hieroglyph 𓂋.


Q

English: max Q

Ancient Greek language
Egyptian language
Etruscan language
Phoenician language
Q

From the Etruscan letter 𐌒 (q, “cu”), from the Ancient Greek letter Ϙ (Q, “qoppa”), derived from the Phoenician letter 𐤒 (q, “qop”), from the Egyptian hieroglyph 𓃻.


R

From the Etruscan letter 𐌓 (r, “er”), from the Ancient Greek letter Ρ (R, “rho”), derived from the Phoenician letter 𐤓 (r, “reš”), from the Egyptian hieroglyph 𓁶.


U

From the Etruscan letter 𐌖 (u, “u”), from the Ancient Greek letter Υ (U, “ypsilon”), derived from the Phoenician letter 𐤅 (w, “waw”), from the Egyptian hieroglyph 𓏲. Doublet of Y, V, and F.


W

From a modification of the Latin letter V (“ve”), from the Etruscan letter 𐌖 (u, “u”), from the Ancient Greek letter Υ (U, “ypsilon”), derived from the Phoenician letter 𐤅 (w, “waw”), from the Egyptian hieroglyph 𓏲.
Its use as a symbol for tungsten is based on German Wolfram.

UU (alternative obsolete)
Uu (alternative obsolete)
VV (alternative obsolete)
Vv (alternative obsolete)


Z

From the Etruscan letter 𐌆 (z, “ze”), from the Ancient Greek letter Ζ (Z, “zeta”), derived from the Phoenician letter 𐤆 (z, “zayin”), from the Egyptian hieroglyph 𓏭.

(physics) the impedance of an electrical circuit

(physics, computer graphics) the depth dimension in a 3D environment


(mathematics, physics) The second time-differential. E.g. x (position), ẋ (velocity), ẍ (acceleration).


(chemistry, physics) an electron orbital type


VAR

(physics, electrics) volt-ampere reactive


ƛ

(physics) reduced wavelength, λ⁄2π. Cf. ℏ.


β

IPA

(physics) beta ray, beta particle, beta radiation


μ

coefficient of friction
coefficient of friction

magnetic permeability
magnetic permeability

Standard gravitational parameter
Standard gravitational parameter

(physics) Standard gravitational parameter


σ

Stefan-Boltzmann constant
Stefan-Boltzmann constant

(physics) The Stefan-Boltzmann constant.


τ

The first one was made by the Viking Orbiter 1 spacecraft in 1980 (Duxbury and Ocampo, 1988) and brought a negative result, setting the upper limit of the normal optical depth of the putative tori to #92;tau#92;lesssim 3#92;times 10#123;-5#125;.

2006 August, Alexander V. Krivov, Artem G. Feofilov, Valeri V. Dikarev, “Search for the putative dust belts of Mars: The late 2007 opportunity”, in Planetary and Space Science, volume 54, numbers 9–10, →DOI, page 871:


ψ

(physics, biochemistry) Water potential in cells.


(mathematics, physics) A vector pointing into the page.


ℏ

(physics) Reduced Planck's constant. Has the value ℎ/2π (where ℎ is Planck's constant), or approximately 1.05457182×10⁻³⁴ J⋅s.


esu

(metrology, physics) The symbol for electrostatic unit of charge or statcoulomb, a unit of electric charge in the CGS system.


ħ

IPA

Originally devised for use in Maltese; see that entry for more details. First adopted as the IPA symbol for the voiceless pharyngeal fricative in 1921.

(physics) a typesetting error for the reduced Planck's constant, ⟨ℏ⟩.

Ⱥⱥ Ƀƀ Ȼȼ Đđ Ɇɇ Ǥǥ Ħħ Ɨɨ Ɉɉ Ꝁꝁ Łł Øø Ᵽᵽ Ɍɍ Ŧŧ Ʉʉ Ɏɏ Ƶƶ Ꝥꝥ


From the Ancient Greek capital letter Δ.

(mathematics, physics) The Laplace operator.


mₑ

(physics) the electron mass, 9.109×10⁻³¹ kg


An

(chemistry, physics, dated) actinon; ²¹⁹₈₆Rn (radon-219); an isotope of radon


(engineering, physics) The mho (unit of conductance)


head

◌̅ (English name overbar or overline or overscore or vinculum)

overbar (English name)
overline (English name)
overscore (English name)
vinculum (English name)

p (proton); p̅ (antiproton)


Var

(physics, electrics) alternative form of VAR


(mathematics, physics) the symbol indicating a vector product a.k.a. cross product


kVAr

(physics, electrics) alternative letter-case form of kVAR


(mathematics, physics) A vector pointing out of the page.


(chemistry, physics) an electron orbital type


Since deformation manifests itself as a change in the metric characteristics of continuum, in the theory of finite deformations, it is then necessary to compare the referential ‵g_(ασ) and the convective g_(ασ) metrics. We systematically employ Latin indices in order to refer to spatial components of geometrical objects, whereas Greek indices to point on convective components (only a few instances can be found in the present study) or referential components (additionally, root symbol is sometimes supplied by backprime).

2023, Yuri N. Radayev, “Two-Point Rotations in Geometry of Finite Deformations”, in Holm Altenbach, Suren Manuk Mkhitaryan, Vahram Hakobyan, Avetik Varazdat Sahakyan, editors, Solid Mechanics, Theory of Elasticity and Creep (Advanced Structured Materials), Cham: Springer, →ISBN, page 276:


(mathematics, physics) A double back prime. Used i.a. to mark the Riesz potential, e.g. ⟨s‶(x)⟩.


Tn

(chemistry, physics) thoron; ²²⁰₈₆Rn (radon-220); an isotope of radon


a⃗ + (-a⃗) = 0

(linear algebra, physics) Denotes a vector quantity.


ZeV

English: zevatron

(physics) zettaelectronvolt / zetta-electron-volt / zetta-electronvolt, 10⁺²¹ eV.


(linear algebra, physics) Denotes a tensor quantity.