By applying the current from a 9 volt battery to a glass of water via two standard pencils used as electrodes, electrolysis takes place, separating the water into hydrogen and oxygen gas; hydrogen at the positive electrode and oxygen at the negative.
Lit by two speedlights; one gelled through posterboard for a backlight and one bare to camera right.
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Cool shot, and a nice demonstration. May I suggest tightening up the crop a bit to lose a bit of the bottom and keep attention on the subjects. Great job at focusing through curved glass!
I agree with the title and it is a great idea. It's just not IMO a good looking photo. Who wants to look at a battery? But I understand you had to have it there in order to prove your point...
It would have been somewhat better to me if at least the pencil had been in focus.
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