any of three constants associated with the critical point of a pure element or compound.
the Wadsworth Constant
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Lexical Investigations: Critical Thinking
Though the phrase critical thinking wasn’t coined until the early twentieth century, its principles can be traced back to Aristotle. The educator and psychologist John Dewey first used the phrase in its modern sense in his 1910 book How We Think, though there are instances of the words appearing together in texts before this time. Dewey defined critical thinking as “reflective thought,” requiring healthy skepticism, …
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