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Luke
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Cards (9)
Constructive interferance
: when two
pulses
of a
wave
meet, they
cancel
each other out
Destructive interferance
: pulses partially cancel each other out and move past one
another
Total destructive interferance
: pulses totally cancel out
To produce a stationary wave
superposition
of two progressive waves travelling in
opposite
directions
with the same
frequency
/
wavelength
and similar
amplitude
unlike progressive waves no energy is
transferred
its possible to have both stationary
transverse
and
longitudinal
waves
When 2 progressive waves overlap they create a larger
stationary
wave through
constructive interferance
As the two progressive waves move through one another they combine to form a single
stationary wave
When
2 progressive
waves line uo so one
peak
of a wave is in line with the
trough
of another they
destructively
interfere
Nodes
: points of no
displacement
, constantly remain
stationary
, total
destructive interferance
always occuring
Anti nodes
: points of maximum
displacement
, where amplitude reaches a max,
constructive interferance
is occuring here