diatomic molecule is a discuss thrower that can spin only at certain speeds

Categories: Comparisons

An example of an analogy used to explain science:

"Consider the molecule of hydrochloric acid [sic, actually hydrogen chloride], one atom of hydrogen and one atom of chlorine. The hydrogen atom is lighter, and swings around the heavier, near-stationary chlorine atom like a discus in the hand of the spinning athlete. It is as if the athlete could spin only at certain speeds: no faster, no slower, and nothing intermediate."

Norwood Russell Hanson

Hanson, N. R. (1958). Patterns of Discovery: An inquiry into the conceptual foundations of science. Cambridge Univerity Press.

Read about analogy in science

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.

Author: Keith

Former school and college science teacher, teacher educator, research supervisor, and research methods lecturer. Emeritus Professor of Science Education at the University of Cambridge.