Mass

Mass (pronounced mas)

(1) A body of coherent matter, usually of indefinite shape and often of considerable size.

(2) A collection of incoherent particles, parts, or objects regarded as forming one body.

(3) Aggregate; whole (usually preceded by in the).

(4) A considerable assemblage, number, or quantity.

(5) Bulk, size, expanse, or massiveness.

(6) In painting, an expanse of color or tone defining form or shape in general outline rather than in detail.

(7) A shape or three-dimensional volume that has or gives the illusion of having weight, density, and bulk.

(8) The main body, bulk, or greater part of anything.

(9) In physics, a physical quantity expressing the amount of matter in a body. It is a measure of a body's resistance to changes in velocity (inertial mass) and also of the force experienced in a gravitational field (gravitational mass); according to the theory of relativity, inertial and gravitational masses are equal.

(10) In pharmacology, a preparation of thick, pasty consistency, from which pills are made.

(11) In the Roman Catholic Church and certain Protestant Churches, the celebration of the Eucharist.

(12) In some religious rituals, the musical setting of certain parts of this service, as the Kyrie eleison, Gloria, Credo, Sanctus, Benedictus, and Agnus Dei (sometimes with initial lowercase).

(13) In extractive mining, an irregular deposit of ore not occurring in veins.

Pre-900: From the Middle English masse, from the Old English mæsse from the Vulgar Latin messa & massa (mass; that which forms a lump) from the Church Latin missa, past participle of mittere (to send, dismiss), perhaps derived from the concluding dismissal in the Roman Mass, Ite, missa est, (Go, it is the dismissal).  Ultimate root was the Ancient Greek mâza (barley cake, lump, mass, ball), akin to mássein (to knead).  Mass is a noun, verb & adjective, massing is a noun & verb and massed is a verb; the noun plural is masses. 

The meaning "lump, quantity, size" is from the late fourteenth century, the sense a direct borrowing from the Old French masse (lump, heap, pile; crowd, large amount; ingot, bar") which had enjoyed the meaning since the eleventh century, under the influence of the Latine massa (kneaded dough, lump, that which adheres together like dough), probably from Greek mâza related to mássein from the primitive Indo-European root mag- (to knead); related was the Lithuanian minkyti (to knead), root of macerate.  The sense extended in English in the 1580s to "a large quantity, amount, or number" and the strict sense in physics is from 1704.  It was first used as an adjective in 1733 and was used thus in biology in the nineteenth century.  Mass-culture was first used (in sociology) in 1916; mass hysteria from 1914; mass media from 1923; mass movement from 1897; mass production from 1920; mass grave from 1918 and mass murder from 1880.

Increasing mass: Lindsay Lohan posts pregnancy progress pictures on Instagram.

Increasing Mass and the Higgs Field

In physics, mass is locked up energy; as an object accelerates, its mass will increase, mass here called “inertial mass”.  Inertial mass is the amount of resistance a physical object has to any change in its motion, this including the resistance a body has to acceleration or to directional changes.  According to the theory of relativity, gravitational mass is always the same as inertial mass; however, when describing an object’s mass increasing due to acceleration, it’s the inertial mass which increases.  So, as an object increases in speed, so does the amount of energy it has, this energy is what is referred to as “the increase in mass”.  It’s this relationship between mass and energy which explains why nothing can exceed the speed of light.  The energy of a particle diverges to infinity as it approaches the speed of light and because there cannot be infinite energy in a particle, the speed of light cannot be reached although particle physicists are divided about whether this was always true.  In the first fraction of a second after the big bang, almost all particles were massless, travelling at or beyond the speed of light until, sometime in that first second, the Higgs field came into existence, permeating the whole universe, giving mass to particles.

The now famous Higgs boson (known also as the Higgs particle) is a subatomic particle which was first described theoretically (as part of a mechanism which was initially referred to as the Higgs Mechanism and is now called the Higgs Field) in the 1960s by English theoretical physicist Peter Higgs (b 1929) and (independently) by a number of others.  The Higgs Field was “invented” because without its operation there was no way to account for the mass of bosons (one of two types of particles) and while bolting it onto the models physicists use for their calculations, it’s existence wasn’t proved until experiments conducted using the Large Hadron Collider (LHC, a very big particle accelerator) at the Conseil européen pour la recherche nucléaire (CERN; the European Organization for Nuclear Research).  The formal announcement of the verification of the existence of the Higgs boson (and by implication the field) was made in July 2012, the Nobel Prize in Physic awarded the following year to Higgs and Belgian theoretical physicist François, Baron Englert (born 1932) (technically the field is properly known as the Brout-Englert-Higgs mechanism, noting the contribution of US theoretical physicist Robert Brout (1928-2011).

Inside the Large Hadron Collider (LHC), a high-energy particle collider mounted in a 17 mile (27 km) long tunnel in a loop deep under the Swiss-French border near Geneva.

The boson is associated with the Higgs field, a form of energy which permeates the entire universe and can be conceptualized as part of the universe’s “fabric” although it’s not helpful to visually that literally but particles acquire their mass by interacting with this field, the Higgs boson the quantum excitation of the field.  Electrically neutral, the Higgs boson is very short-lived, decaying almost at the point of creation and its very existence can be detected only indirectly by an observation of the particles into which it decays.  It took decades to detect because until the LHC was fully operational, a machine capable of sustaining the experiment didn’t exist.  However, while the work at CERN is thought proof of the existence of the field but nothing beyond; how or why the field exists and why some particles interact more than others remains unknown.