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Waves
Wave Properties
Two Source Interference
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Created by
Asher Lok
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Cards (8)
Only
coherent
sources can form an
interference
pattern
Waves are
coherent
when they have a
constant phase difference
When two waves meet in
phase
and with a
path difference
of
n
λ, they
constructively
interfere
When two waves meet in
antiphase
and with a
path difference
of (
n
+
1/2
) λ, they
destructively
interfere
The
central maximum
has
zero phase difference
Points of
constructive interference
are
joined
by
antinodal lines
Points of
destructive interference
are
joined
by
nodal lines
Dark spots
are formed at
minima
due to wave
cancellation