a: electromagnetic spectrum ~
b: fingerprints
What:
"A wavelength in the electromagnetic spectrum is like a set of fingerprints. Scientists believe that by studying sections of the spectrum separately and in combination they can get a better idea of what makes the heavens tick."
Useful?
Writer: John J. Glisch
LCC:
Where:
Date: Jan 9 2015 11:24 AM
# 6987 Critique Analogy