19 .5 micron .000018" Visible light waves Cut 24 .015 micron .0000006" Electron microscope range, membranes Cut 31 .0001 micron .0000000045" The size of an Atom! Is there anything smaller? Yes, the size of an atom nucleus would take about 41 cuts! Scientists use advanced technology to explore the world of electrons and quarks that are at least 9,000 times smaller than a nucleus. We can not see anything smaller than an atom with our eyes, even with the electron microscope. Physicists study much smaller things without seeing them directly. Is there an end to the quest for the smallest and most basic elements in our world? The search began with the Greeks and continues as scientists search for the Building Blocks of the universe. These things are far beyond the range of sensory perception but not beyond the range of human understanding. You can buy this resource on CD-ROM for use on computers without internet access. Visit our online store for more information!