An example of an analogy used in writing about science:
"Like the nucleus of a cell, the ego is a contractile point within the Mind, and the Mind is the sum of knowledge gained by all of the body, all of the senses. In reorganising this position of the brain within the mind, one biomedical engineer has suggested that the brain is not the source of thought but a thought amplifier; that knowledge originates not in the brain but in the body, and that the brain simply magnifies and organises it. This thesis does not mean that the brain's processing function is somehow alien to the human physiological response system, any more than the nucleus can be regarded as as an alien element in the cell."
Morris Berman (1981). The Reenchantment of the World. Cornell University Press.
Read examples of scientific analogies
Many examples of science analogies are listed in 'Creative comparisons: Making science familiar through language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.
The notion of the brain as a thought amplifier can be considered a metaphor.
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.