INDEX 



Abbe limit, 1, 144 

 Abbe's theory, 144 

 Aberration, chromatic, 11, 37 



— coefficient, spherical, 57 



— spherical, 10, 47, 56, 119 

 — , transversal spherical, 11 

 Absorbing cross section, 63 

 Achievements of electron micro- 

 scopy, 85 



Adapter, diffraction, 137 

 Airy disk, 18 



— figure, 144 



Analysis by electron microscope, 



chemical and structural, 137 

 Aperture, optimum, 58 

 — , physical objective, 36 

 Aplanats, 13 

 Apochromats, 13 

 Astigmatism, 11 

 — , elimination of lens, 56 



— in the center, 52 



Atom, elastic scattering by Thomas- 

 Fermi, 133 



Auto-electric emission. See Cold 

 emission. 



Axial point, 10 



Axially symmetrical electric field, 

 lens effect of, 6 



B 



Bacteriophage, 87 

 Beam effect, illuminating, Z7 

 Bibliography. 151 

 Boltzmann's constant, 5 

 Border, chromatic, 46 

 Braun tubes. See Concentrating 

 coil of cathode-ray tubes. 



Cathode-ray tubes, concentrating 



coil of, 2 

 Center astigmatism, 52 

 Change of focus, chromatic, Z7 



— of magnification, chromatic, 2)7 

 Charge effect, space, 23 

 Chemical and structural analysis by 



the electron microscope, 137 

 Chromatic aberration, 11, 2)7 



— border, 46 



— change of focus, 37 



— change of magnification, 27 



— defect, 46 



— dispersion, 5 



— effects, 5 



— error, 21, 44 



— fringes, 46 



Chromosome, lampbrush, 90 

 Chromosomes, 90 



Circuits, stabilization of driving, 



38 

 Cloud, electron, 116 

 Coefficient, spherical aberration, 57 

 Coherence length, 149 

 Coherent light emission, 20 



— wave, 148 



— waves, 142 



Coil of cathode-ray tubes, concen- 

 trating, 2 



Cold emission, 26 



Coma, 12 



Commercial electron microscopes, 

 65 



Concentrating coil of cathode-ray 

 tubes, 2 



Condenser lens, 31 



Confusion, disc of minimum, 11 



Constant of nature. 16 



Contour phenomena, 49 



Contrast, 62 



159 



