Physics: Water Drops help

[midzt]

Hi,

Does anyone know how to produce water drops of the same mass at a constant rate?

I've been looking around on the web, but haven't really found anything useful that I'm able to use.

If I use a constant head device and set it at a low flow rate, will this create drops that are the same?

Thanks for any help

[herulach]

Why the hell would you need to do that? But burette running onto a flat surface with a point on should sort it. Or for that matter just a burette, but it depends how much flow you need.

[Big RICHARD]

Isn't the size of a water droplet dependent on many things and as such is part of chaos theory?

[Trippledence]

Just a fat guy and a tread mill, you can vary the rait of the.. eh... water droplets by changing the speed.

[herulach]

Isn't the size of a water droplet dependent on many things and as such is part of chaos theory?

No, a water droplet has a predictable size, i can dig out my fluid dynamics notes and find it, but i really cant be bothered, suffice to say its basically a function of viscosity and surface tension. It is of course affected by impurities in the water, but not enough to be significant i wouldnt imagine (unless you go mixing high concentrations of things in with it)

You might be thinking of raindrops, which arent the same, but even so, i doubt they are truly chaotic, a sufficiently powerful computer could simulate it given the correct parameters.

[schmunk]

Aye, as herulach says, a burette'll do you just fine, especially for school-level work.

[midzt]

Yeah, i think I'm just going to start with the burette, then see if I can improve on it. THanks guys