25.6 MB (1.2 MB compressed)
3572 x 2501 pixels
30.2 x 21.1 cm ⏐ 11.9 x 8.3 in (300dpi)
EDITORIAL IMAGE / SCIENCE PHOTO LIBRARY EDITORIAL IMAGE / SCIENCE PHOTO LIBRARY
Aqueous KI (Potassium Iodide) to which a few drops of phenolphthalein has been added is electrolyzed.
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