AS physics definition

  • Created by: ngaelsa
  • Created on: 28-03-17 02:58
antinode
a point on stationary with maximum amplitude
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coherent
2 sources are coherent when they emit waves with a constant phase difference
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constructive interference
when 2 waves reinforce to give increased amplitude
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destructive interference
when 2 waves cancel to give reduced amplitude
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diffraction
the spreading of wave when it passes through a gap or a barrier
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e.m.f
total work done when unit charge is moved around a complete circuit
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electric field
a region in which a charged body experiences a force
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frequency
number of oscilations per unit time
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hadron
any particle which is affected by the strong nuclear force, made from 2 or 3 quarks or antiquarks
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inelastic
a collision is inelastic when k.e is not conserved.Momentum and total energy are always conserved
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ion
an atom with a net positive or negative charge
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isotopes
nuclei of the same element with a different number of neutrons but the same number of protons
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lepton
a sub-atomic particle which is not affected by the strong nuclear force
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light-independent resistor (LDR)
a resistor whose resistance decreases as the intensity of light falling on it increase
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light-emitting diode (LED)
a semiconductor component that emits light when it conducts electricity
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longitudinal wave
a wave in which the particles of the medium oscillate along the direction in which the wave travels
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mean drift velocity
the average speed of a collection of a charged particles when a current flowa
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neutrino
a lepton released during beta-decay
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node
a point on stationary wave with zero amplitude
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path difference
the difference in the distances travelled by 2 waves from coherent sources at a particular point
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perfectly elastic
a collision is perfectly elastic when k.e is consered. Momentum and total energy are always conserved
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period
time taken to complete 1 oscillation
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phase difference
difference in the phases of 2 oscillating particles, expressed in degrees or r
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Other cards in this set

Card 2

Front

2 sources are coherent when they emit waves with a constant phase difference

Back

coherent

Card 3

Front

when 2 waves reinforce to give increased amplitude

Back

Preview of the back of card 3

Card 4

Front

when 2 waves cancel to give reduced amplitude

Back

Preview of the back of card 4

Card 5

Front

the spreading of wave when it passes through a gap or a barrier

Back

Preview of the back of card 5
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