Main Question or Discussion Point
What factors affect the speed of sound besides the temperature? Does viscosity affect the speed of sound?
lavster, Yes, viscosity does affect the speed of sound in fluids. Here are some websites that may illuminate the mechanism:What factors affect the speed of sound besides the temperature? Does viscosity affect the speed of sound?
You can't change the viscosity of a fluid indepedently of other parameters, the same way you can change parameters like temperature, pressure, or denisty (for compressible fluids). The way viscosity varies with say temperature is wildly different for different fluiids. That fact doesn't suggest it is going to be a very useful predictor of sound velocity.yes. I cant find viscosity anywhere.
I am not sure what you mean by "thickness" but your post is quite confusing and misleading.What effects the speed of sound other than temperature and viscosity, is the thickness of the medium it's traveling through. For example, sound travels approximately 4.3 times faster through water than air. The second factor that affects a sound wave's speed is pitch. Apparently, the higher the pitch, the faster the speed of sound. Pitch is determined by how bunched up the waves are, and therefore, the more bunched up they are, they must be traveling much faster to complete the track of waves.
I am not sure what you mean by "thickness" but your post is quite confusing and misleading.
The speed of sound depends on the density of the medium and its elastic properties.
The dependence on density is inverse, increased density results in decreased speed, for the same elasticity.
The speed may depend on frequency (see dispersion) but is not due to "bunched waves" whatever that means. In most common media (water and air included) the dispersion is quite negligible.
You are quite correct! I'd not considered that scenario. Thank you for your attention to detail!This is not correct. Try calculating the pressure drop of air flowing through a capillary or through a porous medium without using its viscosity.