Sound and Music - Mission SM10 Detailed Help

The nodal positions on a standing wave pattern for a closed-end air column are ____.


 
Definition of Node and Antinode:
A standing wave pattern consists of nodes and antinodes whose location along the medium is not changing. A node is a location along the medium which does not undergo any displacement; it is a place of no displacement or a node. An antinode is a location along the medium which undergoes a maximum upward and downward displacement from the rest position.


 
Analysis of a Standing Wave Pattern:
A standing wave pattern shows a unique relationship between the wavelength of the waves that create the pattern and a length measured along the medium between two points on the pattern. Every nodal position on the pattern is separated from the next adjacent nodal position by one-half of a wavelength. Similarly, every antinodal position on the pattern is separated from the next adjacent antinodal position by one-half of a wavelength.