This is a video of ink drops being dropped into water shot at 4k resolution (4,096 × 2,304). I included a diagram after the jump so you can appreciate how big 4k is versus 1080. Sadly, your monitor won't be able to play the video in its native resolution, but if you click the Youtube option to view the video in its 'Original' quality, you can at least watch it in as high of a resolution as your monitor will allow. My computer? My computer crashed twice just trying to take a screencap at 720p.
Hit the jump for the video.
Thanks to d00b, who watched the whole thing at 360 resolution just to torture himself.