Quote Originally Posted by AgX View Post
Your video confirms what tests on evenly exposed films showed, that with continuous uniform rotation a laminar flow pattern evolves.
Yes, you absolutely right. During uniform rotation we get the next: speed of reels=speed of liquid => no mixing => looks like stand development
So uniform rotation is a worst way of agitation.

You might do an advanced test and use coloured layers, by "stacking" differently dyed layers of fluid. You would have to do so by inserting the fluids with the reel already inside the beaker.
It's interesting.