An example of a metaphor use in scientific explanation:
"But may we not hope, that philosophy, if cultivated with care, and encouraged by the attention of the public, may carry its researches still farther, and discover, at least in some degree, the secret springs and principles, by which the human mind is actuated in its operations?"
David Hume
Hume, D. (2007). An Enquiry Concerning Human Understanding (P. Millican, Ed.). Oxford University Press. (1748)
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Many examples of science metaphors are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.