PHYSICS KEYWORD LIST:
Stationary wave or standing wave: A stable wave pattern
produced from the superposition of 2 progressive waves of the same frequency
and travelling in opposite directions. A stationary wave has nodes and antinodes.
Node: Point on a stationary wave with 0 amplitude.
Antinode: Point on a stationary wave with maximum amplitude.
Resonance: Term used when a system oscillates with maximum
amplitude by absorbing energy from a vibrating source. Resonance in an air
column of a tube is demonstrated by the loud sound from the tube.
PHYSICS CHAPTER WISE SUMMARY:
Stationary waves are formed when 2 identical progressive
waves travel in opposite directions meet and superpose. This usually happens
when 1 wave is a reflection of the other.
A stationary wave has a characteristic pattern of nodes and
antinodes.
A node is a point where the amplitude is always zero.
An antinode is a point of maximum amplitude.
Adjacent nodes (or adjacent antinodes) are separated by a distance
equal to half the wavelength of the progressive wave.
We can use the wave equation v = fλ to determine a progressive wave's speed/frequency or wavelength.
PHYSICS IMPORTANT NOTES:
|
|
Progressive
Wave |
Stationary
Wave |
|
wavelength |
λ |
λ |
|
frequency |
f |
f |
|
speed |
v |
0 |
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