Physics Dictionary

A

 
absolute index of refraction
absolute temperature
absolute temperature scale
absolute zero
absorption spectrum
acceleration
acceleration due to gravity
acceleration in circular motion
accelerator
accumulator
action and reaction, law of
action at a distance
adhesive force
air pressure gauge
air pump
air tight
air track
alloy
alpha particle
alternating current (A.C.)
alternating current generator
alternator
altimeter
ambient temperature
ammeter
ampere (A)
ampere hour
Ampere's law
amplification
amplifier
amplitude
amplitude modulation (A.M.)
analog
anemometer
aneroid barometer
Angstrom unit ()
angular acceleration
angular deviation
angular displacement
angular harmonic motion
angular momentum
angular motion
angular velocity
anion
annular eclipse
anode
antenna
anticlockwise moment
antinode
aperture
apparent depth
Archimedes' principle
armature
astigmatism
astronomical telescope
astronomy
astrophysics
atmosphere
atmospheric pressure
atom
atomic bomb
atomic energy

atomic heat

atomic mass
atomic nucleus
atomic number
atomic structure
atomic weight
atto (a)
attraction
attractive force
audibility
audible range
audio frequency
average acceleration
average life
average velocity
Avogadro's number (NA)
axis
axis of rotation