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 On 29 Jun, 07:15, msabino...@yahoo.com wrote: > Hi, > > How do I calculate the noise spectrum (a in 1/f^a) for a waterfall as > a rough estimate? This is not a homework problem, and I wasn't given > it so it may be more vague or worded differently than expected. > Interesting question. What about finding the distribution of droplet sizes? I suspect that if you take the speed of sound in water / droplet size tou will get an approximate distribution. Lets look at the problem this way. If you look at droplets breaking away there will be a sound associated. After a droplet breaks away the droplet will still be resonating. This distribution will not be a simple relationship. It will depend on heinght (*g) and surface tension. Part of the gravitational energy goes into surface tension, giving smaller droplets and higher peak frequencies as the drop increases. Just a thought. Interesting question, has anyone performed actual experiments? - Ian Parker