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
Kilowatt
It is unit of
electric power.
Kilowatt
hour (KWH)
It is the unit of
electrical energy
Kilowatt
Hour
The kilowatt hour
is a unit of energy equivalent to one kilowatt of power expended for one hour
of time. An energy dissipation of 1 KWH represents 3,600,000 Joules.
Kinematics
Branch of
mechanics that studies motion of a body or a system of bodies without
considering its mass or forces acting on it.
Kinetic
Energy
Energy associated
with motion is called “kinetic” energy, from the Greek verb “kinein”, mean “to
move”.
Kinetic
Theory of Gases
They are set of
postulates, by which physical properties of gases can be easily explained.
Kirchhoff’s
First Law
It states that at
any junction of several circuit elements, the sum of currents entering the
junction must be equal to sum of currents leaving it.
Kirchhoff’s
Second Law
The algebraic sum
of charges in potential around any closed resistor loop must be zero.
Kirchoff’s
Law (Thermal Radiation)
The ratio of
emissive power to the absorption power is same for all bodies at a certain
temperature for a certain wavelength and it is equal to emissive power of a perfectly
black body at that temperature and wavelength.
Klystron
Device invented
at Stanford University in 1937. It is a type of vacuum tube used as an
amplifier / oscillator for UHF and microwave signals. A klystron tube makes use
of speed controlled streams of electrons that pass through resonating cavity.
Electrons in a klystron are accelerated to controlled speed by application of
several hundred volts. As electrons leave the heated cathode of tube, they are
directed through a narrow gap into resonating chamber, where they are acted
upon by RF signal. The electrons bunch together and are directed into one or
more additional chambers that are tuned at or near the tubes operating
frequency.
Knot
Unit of speed
equal to one nautical mile per hour.
Kronig
Penny Model
It is a simplified model for an electron in
one dimensional periodic potential.
Kundt’s
Law
Optical
absorption bands of a solution are displaced toward the red when its refractive
index increases because of changes in composition or other causes.
Kundt’s
Tube
It is an
acoustical apparatus, invented by German Physicist, August Kundt (1866 ). It is used to find speed of sound in
a solid rod or gas.
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