and 4-D meanderings Re: AW: Underwater latency (not completely OT) ;-)

[mike@michaelplishka.com]

Which just goes to show how much water's lack of compressibility get's 
made up
for by density in ending up four times faster..

looping in four-D would see repeated patterns moving outward or along, a 
ripple
within a ripple.  Some of MEdia Players moving energy pattern 
visualizations
are pseudo 4-D.

~peace~

Michael


www.michaelplishka.com

Quoting Doug Cox <dougcox@pdq.net>:

> This can be found here: http://hypertextbook.com/facts/2000/NickyDu.shtml
>
> Sound is a type of longitudinal, mechanical wave. They need a medium to
> propagate and will not travel through a vacuum. Sound travels at
> different speed in different media. The speed of sound is determined by
> the density and compressibility of the medium. Density is the amount of
> material in a given volume, and compressibility is the how compacted
> could a substance become for a given pressure. The denser and the lower
> the compressibility, the slower the sound waves would travel. Therefore,
> the speed of sound is about four times faster in water than in air. The
> speed of sound can also be affected by temperature. Sound waves tend to
> travel faster at higher temperatures. I have found different values for
> the speed of sound in water in different sources. They range from 1450
> to 1498 meters per second (m/s) in distilled water and 1531 m/s in sea
> water at room temperatures (20 to 25 °C).
>
> The speed of sound in a medium can be determined by the equation...
>
> /v/ = (/B//ρ)^1/2
>
> Where...
>
>     /v/ is the speed of sound,
>     /B/ is the bulk modulus of elasticity, and
>     ρ (rho) is the density.
>
> The bulk modulus of elasticity, also known as the compressibility, is
> the relationship between pressure and volume. It is a measure of how
> much an increase in pressure would decrease the volume.
>
> Nicky Du -- 2000
>
>
>
> Jesse Lucas wrote:
>
> > Rainer Thelonius Balthasar Straschill wrote:
> >
> >> If I remember my (very) basic university classes in physics, we 
>usually
> >> would test any theories we might have by bringing them to extreme 
>values
> >> and see what happens. If lower density = lower speed of sound, then we
> >> would have sound travelling at infinite speed in vacuum. I don't 
>believe
> >> this is the case.
> >
> >
> > In space there is no medium for sound to travel through. See the tag
> > line to the film "Alien."
> >
> >
> >
> >
> >
>
>