Nanotechnology is defined as the study and use of structures between 1 nanometer and 100 nanometers in size. To give you an idea of how small that is, it would take eight hundred 100 nanometer particles side by side to match the width of a human hair.
Introduction to Nanotechnology: Looking At Nano particles
Scientists have been studying and working with nano particles for centuries, but the effectiveness of their work has been hampered by their inability to see the structure of nano particles. In recent decades the development of microscopes capable of displaying particles as small as atoms has allowed scientists to see what they are working with.
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