Συμβολισμός Φυσικής

- Ένας επιστημονικός συμβολισμός
Κατάλογος[]
This is a list of common physical constants and variables, and their notations. Note that bold text indicates that the quantity is a vector.
Latin characters[]
Σύμβολο | Σημασία | Μονάδες Μέτρησης |
---|---|---|
area | meter squared (m2) | |
magnetic vector potential | ||
amplitude | ||
acceleration | meter per second squared (m/s2) or (m s−2) | |
magnetic flux density also called the magnetic field density or magnetic induction |
tesla (T), or equivalently, weber per square meter (Wb/m2) | |
capacitance | farad (F) | |
heat capacity | joule per kelvin (J K−1), or equivalently, joule per degree Celsius (J °C−1) | |
constant of integration | varied depending on context | |
speed of light (in vacuum) | 299,792,458 meter per second (m/s) | |
speed of sound | 340.29 meter per second (m/s) | |
specific heat capacity | joule per kilogram per kelvin (J kg−1 K−1), or equivalently, joule per kilogram per degree Celsius (J kg−1 °C−1) | |
viscous damping coefficient | kilogram per second (kg/s) | |
electric displacement field also called the electric flux density |
coulomb per square meter (C/m2) | |
distance | meter (m) | |
impact parameter | meter (m) | |
diameter | meter (m) | |
differential (e.g. ) | ||
differential vector element of surface area A, with infinitesimally small magnitude and direction normal to surface S |
square meter (m2) | |
differential element of volume V enclosed by surface S | cubic meter (m3) | |
electric field | newton per coulomb (N C−1), or equivalently, volt per meter (V m−1) | |
energy | joule (J) | |
eccentricity | unitless | |
2.71828... (base of the natural logarithm), electron, elementary charge | ||
force | newton (N) | |
frequency | hertz (Hz) | |
function | ||
friction | newton (N) | |
the gravitational constant | newton meter squared per kilogram squared (N m2/kg2) | |
acceleration due to gravity | meter per second squared (m/s2) | |
magnetic field strength also called just magnetic field |
ampere per meter (A/m) | |
Hamiltonian | joule (J) | |
height | meter (m) | |
Planck's constant | joule second (J s) | |
reduced Planck's constant | joule second (J s) | |
action | joule second (J s) | |
intensity | watt per square meter (W/m2) | |
sound intensity | watt per square meter (W/m2) | |
electric current | ampere (A) | |
moment of inertia | kilogram meter squared (kg m2) | |
intensity | watt per square meter (W/m2) | |
imaginary unit | ||
Cartesian x-axis basis unit vector | unitless | |
free current density, not including polarization or magnetization currents bound in a material |
ampere per square meter (A/m2) | |
impulse | kilogram meter per second (kg m/s) | |
Cartesian y-axis basis unit vector | unitless | |
kinetic energy | joule (J) | |
Boltzmann constant | joule per kelvin (J/K) | |
wavenumber | radians per meter (m−1) | |
Cartesian z-axis basis unit vector | unitless | |
inductance | henry (H) | |
luminosity | watt (W) | |
angular momentum | newton meter second (N m s or kg m2 s−1) | |
length | meter (m) | |
magnetization | ampere per meter (A/m) | |
moment of force often simply called moment or torque |
newton meter (N m) | |
mass | kilogram (kg) | |
normal vector | unit varies depending on context | |
atomic number | unitless | |
refractive index | unitless | |
principal quantum number | unitless | |
power | watt (W) | |
momentum | kilogram meter per second (kg m/s) | |
pressure | pascal (Pa) | |
electric charge | coulomb (C) | |
Heat | joule (J) | |
electric charge | coulomb (C) | |
electrical resistance | ohm (Ω) | |
Ricci tensor | unitless | |
radiancy | ||
radius vector (position) | meter (m) | |
radius of rotation or distance between two things such as the masses in Newton's law of universal gravitation | meter (m) | |
surface area | m2 | |
entropy | joule per kelvin (J/K) | |
action | ||
arc length | meter (m) | |
displacement | ||
period | second (s) | |
thermodynamic temperature also called absolute temperature |
kelvin (K) | |
time | second (s) | |
four-velocity | meter per second (m/s) | |
potential energy | joule (J) | |
internal energy | joule (J) | |
relativistic mass | kilogram (kg) | |
energy density | joule per cubic meter (J/m3) or joule per kilogram (J/kg) depending on the context | |
voltage also called electric potential difference |
volt (V) | |
volume | cubic meter (m3) | |
shear force | ||
velocity | meter per second (m/s) | |
mechanical work | joule (J) | |
width | meter (m) | |
a generic unknown | varied depending on context | |
displacement | meter (m) | |
electrical impedance | ohm (Ω) |
Greek characters[]
Symbol | Name | Meaning | SI unit of measure |
---|---|---|---|
alpha | angular acceleration | radian per second squared (rad/s2) | |
beta | velocity in terms of the speed of light c | unitless | |
gamma | Lorentz factor | unitless | |
photon | |||
gamma ray | |||
shear strain | |||
Heat capacity ratio | unitless | ||
delta | a change in a variable (e.g. ) | unitless | |
Laplace operator | |||
delta | displacement (usually small) | ||
epsilon | permittivity | farad per meter (F/m) | |
strain | unitless | ||
zeta | damping ratio | unitless | |
eta | energy efficiency | unitless | |
coefficient of viscosity also called simply viscosity |
pascal second (Pa s) | ||
theta | angular displacement | radian (rad) | |
kappa | torsion coefficient also called torsion constant |
newton meter per radian (N m/rad) | |
lambda | cosmological constant | per second squared (s−2) | |
wavelength | meter (m) | ||
mu | magnetic moment | ampere square meter (A m2) | |
coefficient of friction | unitless | ||
dynamic viscosity | Pascal second (Pa s) | ||
permeability (electromagnetism) | Henry per meter (H/m) | ||
nu | frequency | hertz (Hz) | |
kinematic viscosity | meters squared per second (m2/s) | ||
pi | 3.14159... (irrational number) | ||
rho | mass density usually simply called density |
kilogram per cubic meter (kg/m3) | |
free electric charge density, not including dipole charges bound in a material |
coulomb per cubic meter (C/m3) | ||
resistivity | Ohm meter () | ||
sigma | summation operator | ||
sigma | electrical conductivity | Siemens per meter (S/m) | |
normal stress | |||
tau | torque | newton meter (N m) | |
shear stress | |||
time constant | second (s) | ||
phi | field strength | unit varies depending on context | |
magnetic flux | Weber (Wb) | ||
phi | electric potential | ||
psi | wave function | unitless | |
omega | angular frequency | radian per second (rad/s) |
Other characters[]
Symbol | Name | Meaning | SI unit of measure |
---|---|---|---|
nabla dot | the divergence operator often pronounced "del dot" |
per meter (m−1) | |
nabla cross | the curl operator often pronounced "del cross" |
per meter (m−1) | |
nabla | del (differential operator) | ||
"der", "dow", "die", "partial" or simply "d" | partial derivative (e.g. ) |
Υποσημειώσεις[]
Εσωτερική Αρθρογραφία[]
- αναπαράσταση
- συμβολισμός
- Μαθηματικός Συμβολισμός
- Συμβολισμός Φυσικής
Βιβλιογραφία[]
Ιστογραφία[]
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