using waves to detect the physical world,
image quality is
limited by wavelength
our eyes attuned to the sun's visible light
wavelengths ~
0.0000005 meters = 500nm
too wide to analyze anything smaller than a cell
for higher magnification,
must
use waves with smaller wavelengths
e.g.
electron microscope for crystals, viruses
But even best electron microscope
only shows fuzzy picture of atom. 
