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Bubbles form ebulliently inside a thin-layer electrochemical H-cell as an aqueous solution of potassium dichromate heats up upon the addition of acid.
Multi layer foam.
Taken with EF 100mm macro lens.
It looks like alive cells ..
Do you guess which trick I used ?
I loved the light (color) refraction off of these bubbles so I snapped a shot.
[with the flickr resize a lot of the color seemed to blend away....view large for best results]
this just appeared in the washing up bowl and a horizontal film slowly domed as the heat of the water expanded the air trapped inside the glass- it was one of those moments when the camera happened to be at hand because I had been taking caterpillar photos in the garden......seconds later it popped and was gone.
(Bubble glass is an old form of window glass from the time glass was blown in the form of long cylindrical bubbles which were then cut and straightened out to make window pains.....the ends of the bubble showing a pattern of circular thickening were sometimes used to highly decorative effect - this useless bit of information has nothing to do with the picture above.)