Credit: BeautifulChemistry.net/SCIENCE PHOTO LIBRARY

Caption: Close-up timelapse footage of the growth of a chemical garden . This is a solution of sodium silicate (also called glasswater, or liquid glass) to which a metal salt has been added. In this case, the salt is iron (III) chloride. The salt partially dissolves in the water and the ions react to form a thin layer of insoluble cobalt silicate. This layer is semi-permeable, and the more concentrated salt solution inside the tube pushes outwards due to osmosis. This bursts the tube, releasing more salt solution and forming a new tube, and the process continues. As the pressure is greater further down the water column, the tubes grow upwards. The colour of the tubes depends on the transition metal used. This clip is speeded up 10 times.

Release details: Model release not required. Property release not required.

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Chemical garden growth

K004/5191 Rights Managed

Downloadable master

Duration: 00:00:06

Frame size: 1920x1080

Frame rate: 23.98

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 122.8M

Original

Capture format: Panasonic GH4

Frame size: 3840x2160

Codec: H.264

Please contact Science Photo Library if you require the original, or other formats.

 

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