JACOPIN / SCIENCE PHOTO LIBRARY JACOPIN / SCIENCE PHOTO LIBRARY
BIOLOGY, ILLUSTRATION From the visible to the invisible. Like Russian nesting dolls, we are made up of elements on a variety of different levels, from the highly visible to the infinitely small: - 11-year-old human child (scale 1) - Cell (scale 10-4) - Water molecule (scale 10-9) - Oxygen atom (scale 10-10) - Oxygen atom nucleus (scale 10-14) - Proton (scale 10-15) - 3 quarks which make up the proton (scale 10-18).
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