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well, it's still worth noting that one of the key elements in the demonstration is the ability to create a controlled sound frequency in order to get a specific movement. It's not just the fact that the hose moves... You could make the hose move any number of ways without getting these results.

An experiment, by definition, is the setting up of a test to see if a repeatable phenomenon can verify the existence of a postulated law. You already know enough about the laws that govern frequency, so you aren't inclined to assume the position of someone who needs to see evidence that proves the nature of waves and measurable frequencies.

Most of the fundamental laws of science were identified by experiments much like this



Agreed - but I also agree with Peter that calling it a sound experiment is misleading and has folks thinking the wrong physics aspects. At first glance, one would easily assume that the sound waves are 'bending' the water stream - and that isn't what is happening at all.

Here's what I really think is cool about the demo: Note that in order to get what looks like suspended droplets, or even the droplets slowly moving up/down, those are not the same droplets, but similarly sized/placed droplets from each successive 'wave' passage. The flow control to get similarly sized droplets might be hard to pull off.

-Scott

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