Translations:Adventist Youth Honors Answer Book/Health and Science/Chemistry/15/en
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We cannot directly see atoms with a regular microscope. Light has a wavelength of between 4,000Å and 7,000Å which is about 1000 times the diameter of an atom. Because the wavelength of light is so long it has almost no interaction with the atom. The center of an Atom can be "viewed" and the positions of the electron cloud around an atom can be determined by using an X-ray, (neutron, or electron) beam (which have much smaller wavelengths than light) in such techniques as X-ray crystallography, Neutron crystallography, or Electron crystallography. Or a scanning tunneling microscope can be used.
