Although invisibly small, the relative range of the micro world is huge, thousand times larger than our normal world [1] . In an imaginary voyage deep into the vast micro world, we first encounter microbes, then molecules and atoms, and finally the subatomic world.
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The linear scale of the known micro world (14 absolute orders of magnitude) is 3 orders of magnitude larger than the scale of our normal world. In reality, we do not know the extent of the micro world. Yet, historic discoveries in nuclear and particle physics and molecular biology brought about today's great advances in technology and life sciences.