Particle - Law Dictionary Search Results
Home Dictionary Name: particleParticle accelerator
A large and expensive scientific instrument used by physicists to accelerate elementary particles such as protons or electrons to speeds near that of light for the purpose of investigating the fundamental properties of matter sometimes also called an atom smasher since the particles thus accelerated are often directed at targets of atoms which are fragmented by the impact into their more fundamental component particles...
Particle physics
That branch of physics which investigates the nature of matter and in particular the properties and behavior of the elementary particles fundamental particles of which matter is composed Included in this field is the more specialized branch of high energy physics...
Particle
A minute part or portion of matter a morsel a little bit an atom a jot as a particle of sand of wood of dust...
Slime
Slime, is the term used in milling practice to describe a suspension, in water of the fully divided fraction of pulverized ore; also solid, whether suspended or after setting out to drying, Handbook of Mineral Dressing (at p. 1504); see also National Mineral Development Corpn. Ltd. v. State of Madhya Pradesh, (2004) 6 SCC 281.Means a material of extremely fine-particle size encountered in ore treatment (ASG Gloss), National Mineral Development Corpn. Ltd. v. State of Madhya Pradesh, (2004) 6 SCC 281.Means a mudlike substance formed of ore in an almost impalpable powder, mixed with water: usually plural (Standard 1964) National Mineral Development Corpn. Ltd. v. State of Madhya Pradesh, (2004) 6 SCC 281.Means a product of wet grinding containing valuable ore in particles so fine, as to be carried in suspension by water; chiefly used in the plural (Webster 3d); see also National Mineral Development Corpn. Ltd. v. State of Madhya Pradesh, (2004) 6 SCC 281.Means in metallurgy, ore reduced ...
High energy physics
the branch of particle physics which studies collisions of particles accelerated to such high energy that new fundamental particles are generated in the process The creation of new particles of very high energy is required to permit the study of the most fundamental relations between forms of matter so as to understand the fundamental nature of matter The high energies also reproduce the high temperature conditions at the earliest phase of the big bang allowing generation of some data relevant to understanding the nature and evolution of the universe...
Electricity
a property of certain of the fundamental particles of which matter is composed called also electric charge and being of two types designated positive and negative the property of electric charge on a particle or physical body creates a force field which affects other particles or bodies possessing electric charge positive charges create a repulsive force between them and negative charges also create a repulsive force A positively charged body and a negatively charged body will create an attractive force between them The unit of electrical charge is the coulomb and the intensity of the force field at any point is measured in volts...
lepton
an elementary particle that participates in weak interactions but does not participate in the strong interaction it has a baryon number of 0 Some known leptons are the electron the negative muon the tau minus particle and the neutrinos associated with each of these particles...
big bang theory
The theory that the known universe originated in an explosive event the big bang in which all of the matter and energy of the universe was contained in a single point and began to rapidly expand and evolve starting as high energy particles and radiation and as it cooled over time evolving into ordinary subatomic particles atoms and then stars and galaxies According to this theory the four dimensional space time continuum which we perceive as our universe continues to expand to the present time but it is unknown whether the expansion will continue indefinitely or eventually stop or even reverse possibly leading to a contraction to a single point sometimes referred to as the ldquobig crunchrdquo The competing ldquoSteady state Theoryrdquo gradually lost favor in the 1980s and 1990s See also big bang...
Bose Einstein statistics
A law of statistical mechanics which is obeyed by a system of particles when interchange of two particles does not change the wave function Contrasted to Fermi Dirac statistics See also boson...
boson
A fundamental particle that obeys Bose Einstein statistical rules but not the Pauli exclusion principle the spin value of a boson is always an integer Examples of bosons are alpha particles photons and those nuclei which have an even mass number...
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