| Definition: | point, line, or surface in a standing wave at which a specified time-dependent quantity has a minimum value
Note 1 to entry: If the node is not an isolated point, the terms “nodal line”, “nodal plane”, or “nodal surface” are used.
Note 2 to entry: In acoustics, the appropriate modifier should be used before the term “node” to signify the type that is intended; e.g. particle displacement node, particle velocity node, sound pressure node.
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