it could be cool to do it with liquids with different colours too.
i saw a show the other day where they were saying that the drop that hits the water is actually the same drop that splashes back out. ie, the drop in the first picture is not really splashback but in fact it "bounces" on the water and comes back up. i don't know what the circumstances were surrounding their setup, so maybe they were using different liquids/temperatures, but using two different colors would certainly make for an interesting shot.
i saw a show the other day where they were saying that the drop that hits the water is actually the same drop that splashes back out. ie, the drop in the first picture is not really splashback but in fact it "bounces" on the water and comes back up. i don't know what the circumstances were surrounding their setup, so maybe they were using different liquids/temperatures, but using two different colors would certainly make for an interesting shot.
...$.02...
Really cool! I made it my computer background at work!