Page 197 - Physics 10_Float

GLOSSARY

sphere of glass or plastic.
THERMIONIC EMISSION: The process of emitting of electrons from hot cathode.
TRANSFORMER: An electrical device which is used to increase or decrease the value of an
alternating voltage.
TRANSVERSE WAVES: The mechanical waves in which particles of the medium vibrate
about their mean position perpendicular to the direction of propagation of the waves.
TRUTH TABLES: The truth tables are tables which give the values of the inputs and outputs
of the basic types of logic gates or combination of such gates.
ULTRASONICS: Sound waves of frequency higher than 20, 000 Hz.
WAVE: A disturbance in a medium which travels from one place to another.
WAVELENGTH: The distance between two consecutive crests or troughs.
WORD PROCESSING: Such a use of computer through which we can write a letter, prepare
reports and books, etc.

Electromagnetic

197 Not For Sale – PESRP