Usage History of 'plasmas'

The following chart shows how frequently 'plasmas' appeared in printed materials over time. For example, the word 'plasmas' occurred 2 times in books in 1753 and 16,693 times in 2008. From 1753 to 2008, the word 'plasmas' was used a total of 501,725 times in books scanned by Google. See Reference: Google Ngram project.

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