Ekman Spiral Observing currents caused by wind on a rotating system

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Water tank Material: Acrylic board Height: 10cm Depth: 30cm Width: 30cm The whole tank was put inside a transparent acrylic cover and air currents were blown across it.6) Working fluid 80% glycerin water solution. The kinematic viscosity is approx. 0.6cm2/s .   Visualization At the center of the water tank colored water was spouted in a thin stream directly down into the water, forming for an instant a line of colored water, making the current visible.   Experimental process Colored water was spouted into the tank immediately after it had been spun up.