Longitudanal or compressional waves
compressional waves
wavelength
Compression is the part of a longitudinal wave where the particles of the medium are crowded together. Rarefaction is the part where the particles are spread apart.
Compression is the areas where the particles are closer together. Rarefaction is the areas where the particles are stretched apart.
longitudinal waves spread apart as they go
compressional waves
Longitudanal or compressional waves
particles of the medium
Sound wave
compressional waves
wavelength
Compression is the part of a longitudinal wave where the particles of the medium are crowded together. Rarefaction is the part where the particles are spread apart.
ask someone different
Compression is the areas where the particles are closer together. Rarefaction is the areas where the particles are stretched apart.
Some materials move by diffusion. Diffusion is the process in which molecules spread out, or move from areas where there are many molecules, to areas where there are fewer of them. == It depends on the particles. Brownian motion is what causes very small particles to move in a fluid. On a smaller scale, osmotic pressure, ionic gradient and some others.
I believe you are referring to rarefaction. The "trough" of a compression / rarefaction wave is called rarefaction.
Crest is the highest point for the Transerve wave. Trough is the lowest point of the Transerve wave. Compression is the part of the longitudinal wave where the particles are croweded. Rarefraction is the part of the longitudinal wave where the particles are spread aprat.