| Absorbed dose |
A dose quantity which is the measure of the energy deposited in matter by ionizing radiation per unit mass.
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| Action |
The product of energy and time
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| Activity |
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is …
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| Activity density |
No description
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| Amount-of-substance |
Number of particles compared to the number of atoms in 0.012 kg of 12C
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| Amount-of-substance concentration |
Number of moles of species per liter of solution
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| Angular frequency |
Frequency multiplied by 2π. Also called pulsatance. It was formerly called circular frequency.
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| Angular momentum |
The product of force, distance and time
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| Angular velocity |
A pseudovector representation of how fast the angular position or orientation of an object changes with time. (vector)
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| Area |
Quantities that describe the extent of a surface in two dimensions
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| Bit rate |
The number of bits that are conveyed or processed per unit of time
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| Call intensity |
Number of call attempts per time
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| Capacitance |
Stored charge per unit electric potential
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| Catalytic activity |
The rate of a enzymatic chemical reaction
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| Celsius temperature |
Average kinetic energy per degree of freedom of a system in the Celsius scale.
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| Channel capacity |
Tight upper bound on the rate at which information can be reliably transmitted over a communications channel.
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| Chemical potential |
The energy that can be absorbed or released due to a change of the particle number of the given species
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| Damping coefficient |
An influence within or upon an oscillatory system that has the effect of reducing or preventing its oscillation.
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| Dimensionless (count) |
Quantities that have no dimensions
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| Displacement |
A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion.
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| Dose equivalent |
Equivalent dose is a dose quantity H representing the stochastic health effects of low levels of ionizing radiation on the human body which represents the probability of radiation-induced cancer and genetic damage.
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| Dynamic viscosity |
For a laminar flow of a fluid the ratio of the shear stress to the velocity gradient perpendicular to the plane of shear.
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| Electric charge |
Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.
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| Electric charge density |
The quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C⋅m−3), at any point in a volume.
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| Electric conductance |
Measure for how easily current flows through a material
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| Electric current |
Rate of flow of electrical charge per unit time
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| Electric current density |
The quantity of charge per unit volume, measured in the SI system in coulombs per cubic meter (C⋅m−3), at any point in a volume.
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| Electric flux density |
A vector field that appears in Maxwell's equations. It accounts for the effects of free and bound charge within materials.
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| Electric polarization |
The vector field that expresses the density of permanent or induced electric dipole moments in a dielectric material.
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| Electric potential |
Energy required to move a unit charge through an electric field from a reference point
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| Electric potential difference |
The difference in electric potential between two points.
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| Electric resistance |
Resistance to positive hole movement
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| Energy |
The amount of energy of a system
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| Energy density |
The amount of energy of a system per volume
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| Energy fluence rate |
Mass per time cubed
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| Energy per amount of substance |
The amount of energy of a system per amount of the substance
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| Entropy |
The state of disorder, randomness, or uncertainty of a system.
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| Force |
Mass times acceleration
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| Force per length |
The force on an object per unit length of the object
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| Frequency |
The number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variable
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| Heat capacity |
The amount of heat to be supplied to an object to produce a unit change in its temperature.
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| Heat flow rate |
The amount of heat that is transferred per unit of time in some material.
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| Illuminance |
Luminous flux received by a surface divided by the area of that surface.
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| Impedance |
The opposition to alternating current presented by the combined effect of resistance and reactance in a circuit.
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| Inductance |
Magnetic flux generated per unit current through a circuit
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| Information entropy |
Quantities that measure the level of order or disorder in information content (bits)
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| Kerma |
https://en.wikipedia.org/wiki/Kerma_(physics)
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| Length |
The one-dimensional extent of an object
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| Linear density of electric charge |
The linear charge density can then be understood as the derivative of the charge function with respect to the one dimension of the wire (the position along its length, l) .
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| Linear stopping power |
Kinetic energy lost by charged particles traversing a given material per traversed distance.
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| Luminance solid angle |
No description
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| Luminous intensity |
Wavelength-weighted power of emitted light per unit solid angle
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| Magnetic H field |
Unit of magnetic field strength.
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| Magnetic dipole moment |
The magnetic strength and orientation of a magnet or other object that produces a magnetic field.
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| Magnetic flux |
Measure of magnetism, taking account of the strength and the extent of a magnetic field
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| Magnetic flux density |
Measure for the strength of the magnetic field
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| Magnetic polarization |
The vector field that expresses the density of permanent or induced magnetic dipole moments in a magnetic material
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| Magnetomotive force |
A quantity appearing in the equation for the magnetic flux in a magnetic circuit, often called Ohm's law for magnetic circuits. It is the property of certain substances or phenomena that give …
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| Mass |
A measure of resistance to acceleration
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| Mass concentration |
In chemistry, the mass concentration ρ_i (or γ_i) is defined as the mass of a constituent mi divided by the volume of the mixture V.
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| Mass density |
Mass of material its volume
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| Mass per amount-of-substance |
The mass of one mole of a chemical substance
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| Massieu function |
Ψ = Ψ {X1 ... ,Xi, Yi+1, ... Yr}
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| Molar energy |
The amount of energy of a system per mole
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| Molar volume |
The volume occupied by an amount of a substance (nominally a mole amount)
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| Permeability |
The measure of magnetization that a material obtains in response to an applied magnetic field.
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| Permeance |
The measure of the quantity of magnetic flux for a number of current-turns.
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| Permittivity |
A measure of the electric polarizability of a dielectric. A material with high permittivity polarizes more in response to an applied electric field than a material with low permittivity, thereby storing more …
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| Planck function |
The spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T, when there is no net flow of matter or energy between the body …
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| Power |
Rate of energy transfer
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| Pressure |
Force per unit area
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| Radiant flux |
The radiant energy emitted, reflected, transmitted, or received per unit time
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| Radiant flux density |
Mass per time cubed
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| Radiant intensity |
The radiant flux emitted, reflected, transmitted or received, per unit solid angle.
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| Reactance |
The opposition presented to alternating current by inductance or capacitance.[
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| Reciprocal amount-of-substance |
Inverse amount-of-substance
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| Reciprocal length |
Inverse length
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| Reciprocal mass |
Inverse mass
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| Reciprocal time |
Inverse time
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| Relative amount-of-substance |
An amount of substance(s) [A] relative to another amount of substance(s) [B]
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| Relative length |
Quantities that have no overall dimensions but are based on a length ratio (length of A/length of B)
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| Relative length squared |
Quantities that have no overall dimensions but are based on an area ratio (area of A/area of B)
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| Relative luminous flux |
Quantities that have no overall dimensions but are based on a luminous ratio
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| Relative mass |
Quantities that have no overall dimensions but are based on a amount-of-substance ratio)
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| Relative radiant flux |
Quantities that have no overall dimensions but are based on a radiant flux ratio
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| Relative volume |
Relative amounts of three dimensional volume of objects or space
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| Repetency |
Inverse of the wavelength
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| Resistance to alternating current |
No description
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| Resistivity |
A fundamental property of a material that measures how strongly it resists electric current.
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| Sound exposure level |
Sound exposure level (SEL) is a logarithmic measure of the sound exposure of a sound relative to a reference value.
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| Specific charge capacity |
Electric charge divided by mass.
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| Specific energy |
Energy per unit mass
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| Specific entropy |
Entropy divided by mass.
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| Specific heat capacity |
Heat capacity divided by mass.
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| Spectral radiant energy |
Radiant energy per unit wavelength interval.
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| Spectral radiant flux |
No description
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| Speed |
The magnitude of a velocity (therefore not directional).
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| Stress |
Stress is defined as the force across a "small" boundary per unit area of that boundary, for all orientations of the boundary.
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| Surface density of electric charge |
The quantity of charge per unit area, measured in coulombs per square meter (C⋅m−2), at any point on a surface charge distribution on a two dimensional surface.
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| Surface-activity density |
No description
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| Thermodynamic temperature |
Average kinetic energy per degree of freedom of a system
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| Time |
The duration of an event
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| Torque |
Monment of force. Sum of moments of forces not acting along the same line.
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| Velocity |
Velocity is the directional speed of an object in motion as an indication of its rate of change in position as observed from a particular frame of reference and as measured by …
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| Volume |
Three dimensional volume of an object or space
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| Volume density |
Volume density is the amount of a quantity (often mass) per unit of volume.
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| Volume fraction |
Volume density is the amount of a quantity (often mass) per unit of volume.
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| Volume per time |
Movement of a volume of space per unit time
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