An example of a metaphor in science journalism,
"[Stanford University's Professor Richard] Zare's team made its hydrogen peroxide discovery while trying to synthesise gold nanostructures in microdroplets, armed with the knowledge that Michael Faraday had made gold films with lemon juice. They added sodium borohydride – which Zare calls 'modern lemon juice' – to water microdroplets and found that the reaction occurred 100,000 times faster than in bulk liquid."
Rebecca Trager, Are water microdroplets really chemical dynamos?, Chemistry World, February 2024, pp.38-40
Read about metaphor in science
Read about examples of science metaphors
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.