Mass

Mass is an intrinsic property of a body. In modern physics, it is generally defined as the strength of an object's gravitational attraction to other bodies - as measured by an observer moving along at the same speed.

rest mass of an atom in its ground state

elementary particle transmitting the Higgs field giving particles mass

physical law relating mass to energy

mass per amount of substance

scientific law that a closed system's mass remains constant

sum of atomic masses of all atoms in a molecule

unique point where the weighted relative position of a distributed mass sums to zero

smallest amount of fissile material needed for a sustained nuclear chain reaction

mass of a physical system independent of its motion; equals its total mass when at rest

mass per time of a fluid passing through a cross section

Tonnage is a measure of the capacity of a ship, and is commonly used to assess fees on commercial shipping. The term derives from the taxation paid on tuns or casks of wine. In modern maritime usage, "tonnage" specifically refers to a calculation of the volume or cargo volume of a ship. Although tonnage (volume) should not be confused with displacement (the actual mass of the vessel), the long ton (or imperial ton) of 2,240 lb is derived from the fact that a "tun" of wine typically weighed that much.

center of mass of two or more bodies that are orbiting each other, or the point around which they both or all orbit

thumb|right|400px|A simple crane

"effective" inertial mass appearing in the two-body problem of Newtonian mechanics; quantity which allows the two-body problem to be solved as if it were a one-body problem

the mass that an object seems to have when responding to forces, or when interacting with other identical particles in a thermal distribution

concept that incorporates the general understandings from the laws of motion of special relativity along with its concept of mass–energy equivalence

relative brain size measure

hypothetical type of exotic matter whose mass is of opposite sign to the mass of normal matter

orders of magnitude (mass) in SI system

(scientific contexts) mass refers loosely to the amount of "matter" in an object (though "matter" may be difficult to define), whereas weight refers to the force exerted on an object by gravity

mass of a star in astronomy

in combustion engines

empirical function that describes the initial distribution of masses for a population of stars

formula to approximate nuclear mass based on nucleon counts

weight of an empty vehicle or container

lowest possible mass of the celestial object

device that measures mass flow rate of a fluid traveling through a tube

application of conservation of mass to the analysis of physical systems

mass of a stationary electron

physical model in which electroweak symmetry is broken by a gauge-theoretic mechanism (instead of a Higgs boson)

measurement of the internal volume of a sailing vessel (approx. 1650–1849)

use of thermal energy storage in building design

portion of a vehicle not supported by its suspension system

early Israelite weight equal to about two-thirds of a shekel

mass against which a system operates

portion of a vehicle supported by its suspension system

spatial distribution of mass within a solid body

parameter in physics problems

shifting load

facet of general relativity

function that gives the minimum mass of a star or planet in a spectroscopic binary system

measure of the mass of a planet-like object

measure of the efficiency of a rocket based on its propellant's mass

type of mass in quantum field theory