The half waves have two free ends where the antinodes are at the ends and nodes are in the middle such that each half wave keep multiplying indefinitely to complete whole wavelengths where C = f X.
Electro and magnetic waves expand into larger waves from the antinodes (displacement) energy of standing waves at twice the wave amplitude of the smaller wave giving distance to the field.
4 bottom row) shows a strong antinode
over eastern Eurasia, which is shifted to Kamchatka for cold winters.
This latter was maintained stretched between the antinode
positions of the first free-free mode.
With a rate input, the positions of the nodes and antinodes
move around the cylinder wall in the opposite direction to the direction of rotation (Coriolis acceleration).
During vibrations, each pattern of strutting system characteristically has nodes and antinodes
at various locations on the body of the guitar.
If the amplifier's input pin is located in a leaked signal's antinode
, then a stronger leaked signal will feed back into the amplifier, creating the oscillation effect.