S.I. Units : The International System of Units .
Н.Р. : Horse Power.
kWh : kiloWatthour.
P. E : Potential Energy.
К.Е. : Kinetic Energy
TIFR : Tata Institute of Fundamental
Research.
BARC : Bhabha Atomic Research Centre.
Ly : Light Year.
AU : Astronomical Unit.
ISRO : Indian Space Research Organisation.
INSAT : Indian National Satellite.
IRS : Indian Remote Sensing Satellite.
PSLV : Polar Satellite Launch Vehicle.
GSLV : Geosynchronous Satellite
Launch Vehicle.
IUPAC : International Union of Pure And
Applied Chemistry.
IUPAP : International Union of Pure And
Applied Physics.
atm : Atmospheric Pressure.
ISO : International Organisation for
Standardisation.
NTP : Normal Temperature and Pressure.
EDUSAT : The Indian Satellite for
Education.