What is antinode?

What Does antinode Mean

Antinodo is a term that is not part of the dictionary of the Royal Spanish Academy ( RAE ). The concept is used in the field of physics to refer to a point on a standing wave .

Before defining what an antinode is, we must focus on the idea of node . The nodes are the points that, in a wave motion or a vibrating body, remain fixed .
Therefore, in the standing wave, the point where a minimum amplitude is registered is a node. If we take a string that is vibrating, its ends are nodes (they remain immobile).

An antinode , in this framework, is the opposite of a node . In the antinode, the standing wave reaches its maximum amplitude .
The nodes are distributed in intervals with the same space where the amplitude of the standing wave approaches 0 . The antinodes are located midway between each node, since the maximum amplitude is reached there.
It can be said that standing waves constitute the characteristic pattern of a mode of vibration linked to the resonance of an object (such as the aforementioned case of a string). The modes of vibration , in turn, are the result of the combination of interference (a phenomenon produced when two waves overlap and give rise to the formation of another wave) and reflection (the change of direction of the wave produced by the contact with a parting surface). The point of minimum vibration of the standing wave is the node ; the point of maximum vibration is called the antinode .

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