Terminologies in Physics

The following table illustrates the major ‘Terms’ in physics −

TermsMeaning
Absolute ZeroIt means the theoretical lowest possible temperature
AcousticsThe branch of physics that studies sound
AdhesionThe propensity of dissimilar particles or surfaces to adhere or cling to one another
Alpha particlesIt consists of two protons and two neutrons bound together into a particle (i.e. identical to a helium nucleus)
Amorphous solidIt is non-crystalline solid, which has no definite shape
AmplitudeIt is height of a wave, which is measured from its center position
Angstrom (Å)It is an unit of linear measurement that measures micro-particles
Atomic mass unitIt is one-twelfth the mass of an atom of the isotope 12⁄6C
Beta ParticlesIt is high-energy, high-speed electrons or positrons emitted by the particular types of radioactive nuclei
Big BangThe cosmological model that explains the early development of the Universe
Binding energyThe mechanical energy that is required to disassemble a whole into separate parts
Black holeA region of space-time, which gravity is very powerful and prevents anything, including light, from escaping
BosonIt is one of two classes of elementary particles; second one is fermions
CathodeAn electrode through which electric current flows out of a polarized electrical device
Centrifugal forceCenter fleeing
Centripetal forceCenter seeking
Condensed matter physicsA branch of physics that studies the physical properties of condensed phases of matter
ConvectionThe process of transfer of heat by the actual transfer of matter
CrestThe point on a wave with the maximum value
Doppler effectThe change in frequency of a wave for an observer moving relative to its source
DuctilityIt is the property of solid material that deform under tensile stress
ElasticityIt is physical property of materials which return to their original shape once they are deformed.
ElectromagnetA typical magnet in which the magnetic field is produced by passing the electric current
EntropyA quantity that describes the randomness of a substance or a system
Escape velocityThe speed at which the kinetic energy and the gravitational potential energy of an object is zero. Likewise, the escape velocity is the speed required to “break free” from a gravitational field without further propulsion
Free fallAny motion of a body where its weight is the only force acting upon it
Ice pointA transitional phase of a substance from a liquid to a solid.
InertiaIt is the tendency of an object to resist any change in its motion
KinematicsGeometry of motion
NeutrinoAn electrically neutral subatomic particle
PhotonIt is an elementary particle
QuarkIt is an elementary particle and a fundamental constituent of matter
RedshiftShifting towards the red end of the spectrum
ScrewIt is a mechanism that converts rotational motion to linear motion
SiphonAn inverted U tube that causes a liquid to flow uphill without support of any pump. It is basically powered by the fall of the liquid as it flows down the tube under the force of gravity
SublimationIt is a process of transformation in which solid directly changed to gas without passing through an intermediate liquid phase
SupernovaA stellar explosion, which is more energetic than a nova
VectorVector is a quantity, which has both magnitude and direction
White dwarfIt is a stellar remnant, which is composed largely of electron-degenerate matter. These are very dense
Wind shearIt is the difference between wind speed and direction over a relatively short distance in the atmosphere

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