Floppy modes
Illustration of the concept of floppy modes: A fiber, drawn
horizontally, is moved along its axis. The bending undulations
are a consequence of the elastic network the fiber is imbedded
into. To avoid contributions from stretching of the network,
the floppy mode has to keep all lengths unchanged (possible to
first order only).
Watch a
Movie of the floppy fiber
(151 KByte).