The image features the alchemical symbol for Potash from which it was first isolated. In some rare cases, potash can be formed with traces of organic materials such as plant remains, and this was the major historical source for it before the industrial era. © Murray Robertson - Potassium from a visual interpretation of the periodic table of elements, available from http://www.rsc.org/visualelements
Potassium - YouTube |
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| Science & Technology | Upload TimePublished on 14 Apr 2009 |
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