164 



Index 



Space charge-corrected objectives, 

 107 



— charge effect, 23 



— charge lens. 111 



— , electron waves in, 23 

 Specimens for electron microscope, 



preparation of, 74 

 Spherical aberration, 10, 47, 56, 119 



— aberration coefficient, 57 



— aberration, transversal, 1 1 



— microscope, 25, 27 ^ 

 Stabilization .of driving circuits, 38 

 Static magnetron, 110 

 Stereoscopic photography, 70 

 Stigmatic wave. See Homocentric 



wave. 



Strength, increasing lens, 100 



Structural and chemical analysis by 

 the electron microscope, 137 



Supermicroscope, electrostatic, 30 



— , magnetic, 30, 32 



— , X-ray, 2 



Supermicroscopes, 29 



Symmetrical electric field, lens ef- 

 fect of axially, 6 



Theory, Abbe's, 144 - 

 — , equivalence, 146 



— of electron microscope, diffrac- 



tion, 142 



Thomas-Fermi atom, elastic scat- 

 tering by, 133 



Tobacco mosaic virus, 90 



Total scattering cross section, 129 



Trajectories, electron, 34 



— in magnetic lens, electron, 8 

 Trajectory, electron, 16 

 Transmission type electron micro- 

 scopes, 29 



Transversal spherical aberration, 11 

 Tubes, Braun. See Concentrating 



coil of cathode-ray tubes. 

 — , concentrating coil of cathorle- 



ray, 2 



Ultimate limit of electron micro- 

 scopy, 127 



* 



Ultramicroscope, 19 



— electron microscope, detection 



limit of, 62 

 Uncorrected electron microscope, 

 improvements in, 99 



— electron microscope, resolution 



limit of, 56 

 Undercorrected lens, 11 

 Unipotential lens. See Fixed focus 



lens. 

 Unit of action, natural, 16 

 Universal electron microscope, 



RCA, 78 



V 



\^irus, influenza, 86 



— , tobacco mosaic, 90 



Voltage, fluctuation of driving, 56, 



71 

 — , ripple, 72 



W 



Wave, coherent, 148 

 — , edge, 50 



— equation, Schrodinger, 17 

 — , homocentric, 18 



— mechanics, 2 



— optics, electron, 16 



— , stigmatic. See Homocentric 

 wave. 



— trains of electrons, length of. 



See Coherence length. 



Wavelength, de Broglie, 17 



Waves, coherent, 142 



— , de Broglie hypothesis of elec- 

 tronic, 2 



— , electro-magnetic, 22 



— , electron, 22 



— in space, electron. 23 



— , intensity of electron, 23 



— light, 22 

 — , scalar, 147 



X 



X-ray supermicroscope, 2 



