An example of simile used in science writing:
"The salt from the Rio Negro, from the S. Chiquitas and from San Julian, instead of being an "amorphous mass," yielding "a soft powder," is coarsely crystallized, some of the cubes being even 3 or 4 inches square. Instead of being mixed with much earth, the salt presents an expanse as white as newly fallen snow, which, viewed from a distance, as I well remember to my cost, might readily be mistaken for a lake."
Charles Darwin (1847) Salt. Gardeners' Chronicle and Agricultural Gazette.
Read about examples of science similes
Many examples of science similes are listed in 'Creative Comparisons: Making Science Familiar through Language. An illustrative catalogue of figurative comparisons and analogies for science concepts'. Free Download.