A few weekends ago, we came in to help some visiting researchers who were doing an experiment concerning nitrate levels in the water and something else that I can’t quite recall. The point is that they dumped this fluorescent red dye called Rhodamine in the stream, and it looked AWESOME. Note that photos without rounded corners were taken with Jess’s camera.The dye was pumped to the top of the stream, where it was mixed with water in a trough. Then, the water overflowed and spilled the dye into the stream.
The dye flows from the funnel to the trough:
Here’s a crappy .gif of the initial plume spreading down the stream:
One thing that was being done was that the Acoustic Doppler Velocimeter (ADV) had been set up and was taking 3D velocity measurements. Pretty cool (expensive) piece of equipment. Here it is:
Lots of pictures because it just looks cool.