File:Liesegang band experiment.webm
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Original file (WebM audio/video file, VP8/Vorbis, length 31 s, 478 × 720 pixels, 32 kbps overall, file size: 123 KB)
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English: Liesegang band experiment. Red material is gelatin with Mg sulfate (MgSO4) and a drop of red food coloring; clear material above it is concentrated ammonium hydroxide. Diffusion of NH4OH into the gelatin causes discontinuous precipitation of Mg hydroxide ( Mg(OH)2 ) - classic Liesegang band behavior. Frames were taken every 3 minutes, with 12 frames/sec. Around 20 sec into the video the upper, thick band of Mg hydroxide gravitationally collapses down onto the other bands. The camera battery ran out before a sixth band formed. Experiments supported in part by National Science Foundation grant EAR-1052813. |
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| Source | Liesegang 030512 12 fps 3 mpf.mov |
| Author | kemodadog's channel |
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This file was selected as the media of the day for 17 May 2015. It was captioned as follows:
English: Liesegang band experiment. Red material is gelatin with Mg sulfate and a drop of red food coloring; clear material above it is concentrated ammonium hydroxide. Diffusion of NH4OH into the gelatin causes discontinuous precipitation of Mg hydroxide
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Čeština: Chrámová opice makak bandar (Macaca sinica) sedící na zdi na cestě k Jeskynnímu chrámu Dambulla, Sri Lanka. English: Liesegang band experiment. Red material is gelatin with Mg sulfate and a drop of red food coloring; clear material above it is concentrated ammonium hydroxide. Diffusion of NH4OH into the gelatin causes discontinuous precipitation of Mg hydroxide 中文（简体）：利泽冈现象
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This file, which was originally posted to
Liesegang 030512 12 fps 3 mpf.mov, was reviewed on 3 May 2015 by reviewer INeverCry, who confirmed that it was available there under the stated license on that date.
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Attribution: kemodadog's channel
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 12:35, 2 May 2015 | 31 s, 478 × 720 (123 KB) | Jacopo Werther (talk | contribs) | == {{int:filedesc}} == {{Information |Description = Liesegang band experiment. Red material is gelatin with Mg sulfate and a drop of red food coloring; clear material above it is concentrated ammonium hydroxide. Diffusion of NH4OH into the gelatin c... |
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