Crystalline Pt nanoparticles observed in a non-crystalline support using 300 keV electrons. The field width of each green square is approximately 56.4, which makes the Nyquist frequency cutoff in these 128×128 pixel images about 128/(2×56.4) ~ 1.13 . This is also the half width of the corresponding image power spectra at right. The (111) fringes have a spacing near 2.26 Å, while the (200) fringes have a spacing of about 1.96 Å.