A - Blood Antigen, Magnetic vector potential, Work,
B - B meson, Blood Antigen, Boron, Luminance, Magnetic field,
C - Coulomb, Degrees Celsius, Carbon, Set of complex numbers, Specific heat capacity, Molar heat capacity (Cp),
D - Electric displacement,
E - Electric field, Energy, SI prefix: (exa-), Expected value,
F - Farad, degrees Fahrenheit, Fluorine, Force, Helmholtz free energy,
G - Einstein tensor, SI prefix: (giga-), Gibbs free energy, Gravitational constant, Green's function, Momentum,
H - Auxiliary magnetic field, Enthalpy, Hamiltonian, Hankel function, Heaviside step function, Henry, Hydrogen,
I - Current, Iodine, Impulse, Luminous intensity, Moment of inertia,
J - Angular momentum, Bessel function of the first kind, Current, Joule,
K - Kaon, degrees Kelvin, Potassium,
L - Angular momentum, Inductance, Lagrangian,
M - Magnetization, Mass, SI prefix: (mega-), Torque,
N - Avogadro's number (NA), Set of natural numbers, Newton, Bessel function of the second kind, Nitrogen, Normal distribution,
O - a Blood antigen, Big O notation, Ohm, Oxygen,
P - Legendre polynomial, Luminous flux, Phosphorus, Polarization, Power, Pressure, Probability,
Q - Electric charge, (Quantity of) heat, Set of rational numbers,
R - Electrical resistance, Radius, Set of real numbers,
S - Area, Entropy, Sphere, Spin operator, Sulfur, Symmetric group,
T - Temperature, Tesla,
U - Potential energy, Uranium, Unitary operator,
V - Potential energy, Volt, Volume,
W - Energy, Lambert's W function, Watt, Work, Work function,
X - Random variable,
Y - Bessel function of the second kind, SI prefix: (yotta-), Yttrium,
Z - SI prefix: (zetta-), Atomic number, Impedance, Set of integers, Partition function (statistical mechanics), Partition function (quantum field theory)
a - SI prefix: (atto-), Acceleration, Reflectance,
b - Bottom quark
c - SI prefix: (centi-), Charm quark, Speed of light, Speed of sound,
d - SI prefix: (deci-), Distance, Down quark, Infinitesimal quantity,
e - Napier's constant, Electron, Electric charge,
f - SI prefix: (femto-), Frequency,
g - gram, Gravitational acceleration, Gravitational field, Distance metric of spacetime,
h - Height, Hour, Planck's constant, Spherical Hankel function,
i - Imaginary unit, Unit vector,
j - Current and current density, Imaginary unit, Radiant intensity, Spherical Bessel function of the first kind, Unit vector,
k - Boltzmann constant (kB), Imaginary unit (quaternion), SI prefix: (kilo-), Wave vector, Unit vector,
l - Length, Litre, Mean free path,
m - Magnitude, Mass, SI prefix: (milli-), Meter, Minute,
n - Amount of substance, SI prefix: (nano-), Neutron, Refractive index, Spherical Bessel function of the second kind,
o -
p - Electric dipole moment, Momentum, SI prefix: (pico-), Proton,
q - Electric charge, Generalized coordinate,
r - Position (vector), Radial polar coordinate, Radius,
s - Second, Strange quark,
u - Up quark,
v - Velocity,
w - Velocity,
x - Position coordinate,
y - Position coordinate, SI prefix: (yocto-),
z - Complex number, Position coordinate, SI prefix: (zepto-),
Γ - Angular momentum, Gamma function,
Δ -
Λ - Iwasava algebra, Lorentz transformation,
Ξ -
Π - Product,
Σ - Sum,
Φ -
Ψ - Quantum mechanical wavefunction,
Ω - Chaitin's constant, Ohm, Solid angle,
α - Alpha particle, Fine structure constant,
β - Inverse temperature,
γ - Euler-Mascheroni constant, Gamma-ray (Photon), Photon, Relativistic gamma factor,
δ - Dirac delta function, Infinitesimal quantity, Kronecker delta,
ε - Infinitesimal quantity, Permittivity,
η - Distance metric of flat spacetime, Efficiency, Dynamic viscosity,
θ - Angle, Angular polar coordinate, Temperature,
ι -
λ - Half life, Lagrangian multiplicator, Lambda expression, Thermal conductivity, Wavelength,
μ - Absorption coefficient, Chemical potential, Magnetic moment, Mean, SI prefix: (micro-), Muon, Permeability, Reduced mass,
ν - Frequency, Kinematic viscosity, Neutrino,
ξ -
ο -
π - Conjugate momentum, Number &pi, Pion,
ρ - Density, Electrical resistivity, Radial polar coordinate,
σ - Cross section, Electrical conductivity, Spin, Standard deviation, Stefan-Boltzmann constant,
τ - Tau lepton, Torque,
υ -
φ - Angular polar coordinate, Electric scalar potential, Euler's totient function, Golden mean, Phase, Potential energy,
χ - Electric susceptibility,
ψ - Quantum mechanical wavefunction,
ω - Frequency,
Ш - Shafarevich-Tate group (Ш(G)),
א - Cardinality of infinite sets