A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Cathodic
Sputtering
The deposition of
metal film by sputtering from a cathode through glow discharge method was first
observed by Groove. The ejection of atoms from cathode surface by
impinging energetic particle ions of
noble gases such as Helium, Argon, Neon, Krypton at a reduced pressure under
high DC voltage give rise to phenomenon called as sputtering.
Cation
A positively
charged metallic ion.
Cauchy’s
Dispersion Formula
An empirical
expression giving an approximate relation between the refractive index ‘n’ of a
medium and the wavelength ‘λ’ of light. The empirical formula is n = A +
B/ λ2 where A & B are constants; ‘n’ is refractive index; ‘λ’ is wave length.
Causality
Law
Effect cannot
precede Cause. The law states that “The interval between two events is same in
all inertial frames of reference”.
Causality
The relation
between Cause and Effect; later is consequence of first.
Cavendish
Experiment
The experiment
performed by British scientist Henry Cavendish in 1797-98 using torsion balance
to measure the force of gravity between masses in the laboratory, and is the
first experiment to yield accurate values for the gravitational constant.
Celestial
Body
It is natural
body outside Earth’s atmosphere. Celestial body refers to a single, cohesive
structure that is bound together by gravity or electromagnetism and is
associated with position in space.
Celsius
Scale
It was named
after Swedish astronomer Anders Celsius, who established it. It is the scale
designed by considering temperature difference between reference temperatures
of freezing & boiling points of water divided into 100 degrees. The
freezing point is taken as 0oC & boiling point as 100oC.
The Celsius scale is widely known as centigrade scale because it is divided
into 100 degrees.
Celsius
It is unit of
temperature. On Celsius scale of temperature, the lower fixed point is melting
point of pure ice at normal atmospheric pressure. This is called 0 oC.
The upper fixed point is the boiling point of pure water which is designated as
100 oC. The gap between the two fixed points is divided into 100
equal parts or degrees.
Cema
One limitation of
Kerma is that it is defined only for uncharged particles, such as photons. For
charged particles, another quantity called Cema has been introduced. It is
analogous to Kerma in definition and is mathematically written as C= dEcon/dM; where
dEcon; ‘V’ is the energy lost by charged
particles in a material of mass dM. The SI units of Cema are J/kg or Gray.
Center
of Mass Frame
It is any
inertial frame in which center of mass remains at rest.
Center
of Mass
It is the point
at which whole mass of body is supposed to be confined. It may lie inside or
outside the body.
Centi
It is a prefix in
the metric system denoting a factor of one hundredth. It is used with meter to
express lengths in centimeters, a common unit of length in CGS system.
Central
Tendency
The central
tendency of a distribution is a number that represents the typical or most
representative value in the distribution. Measures of central tendency provide
researchers with a way of characterizing a data set with a single value. The
most widely used measures of central tendency are the mean, median, and mode.
Central
Force
A force whose
line of action is always directed toward a fixed point is called central force.
The point, toward or from which force acts is called central force.
Centre
of Gravity
It is the point of a body through which its
weight acts.
Centrifugal
Force
It
is the radial force acting outwards on the agency which makes body to move in a
circular path.
or
The
pseudo force which acts radially outwards on body moving along a circle.
Centripetal
Acceleration
The acceleration
of object in uniform circular motion, which points towards center, is called as
centripetal acceleration.
Centripetal
Force
It is the force
which acts perpendicular to direction of linear velocity to keep body in a
circular motion. This force changes direction of linear velocity but not its
magnitude.
Centroid
The name
attributed to geometrical center of objects shape.
Ceramic
The term “Ceramic” comes from Greek word
“keramikos”, which means “burnt stuff” indicating that desirable properties of
these materials are normally achieved through high temperature heat treatment
process called firing.
or
A compound of metallic and non-metallic elements, for which the inter-atomic bonding is predominantly ionic.
