On Monday 15th October the photography interest group spent an evening photographing water drops.
David who took the above picture said: “On Monday Basingstoke Makerspace held a ‘photographing drops’ session. I think this is my favourite shot of the night from my camera. It’s also given me an idea for a project I want to try.”
We used a Speed-light flash and a Pluto trigger together with a triggered drop release mechanism to produce reproducible drops.
After a falling water drop splashes into a bowl of water a crown is forme from displaced water. the bulk of the drop remains intact and enters the water. In the following picture the crown can be seen with a second drop timed to fall artistically just above the crown.
As the initial drop enters the water in the centre of the crown it displaces water in the bowl upwards. This slows the drop’s downward speed until it stops. At this point it starts to moves up pushed by the displaced water. When it reaches the surface it breaks out of the surface with surface tension forming a stalk with some fraction of the original drip on the top. The remains of the crown can be seen spreading out.
We then added a second drip to collide with the upward rising stalk from a previous drop. When the two collide
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