atomic electrons influence alpha particles as mosquitoes influence a charging elephant

Categories: Comparisons

An example of an analogy used to explain science:

"As an 𝛂-particle passes through the atoms of the target material, it is influenced by the forces of attraction towards atomic electrons and the forces of repulsion from the positive parts of the atom. Since, however, the electrons are so exceedingly light, they are no more able to influence the motion of the incident 𝛂-particle, than a swarm of mosquitoes can influence the run of a scared elephant. On the other hand the repulsion between the massive positive parts of the atom and the positive charge of incident 𝛂-particles must be able to deflect the latter from their ordinary trajectory and to scatter them in all directions , provided they pass sufficiently close by one another."

George Gamow (1961) One, Two, Three…Infinity. Facts and speculations of science, Revised Edition, Dover Publications, Inc., New York.

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.