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From our world to the "nano world", it is necessary to make three successive cuts by a factor of 103:

  • from the human size to a grain of sand from the meter to the millimeter,
  • from the grain of sand to the bacteria from the millimeter to the micrometer,
  • from the bacteria to the molecule from the micrometer  to the nanometer.



From the planetary dimension to the molecular dimension. Extract of "NANO the next dimension" (2002).