摘要:

Two charts of reciprocal Lorentz‐polarization factors for equi‐inclination Weissenberg photographs are given, which will furnish simple templates of such factors to be used either directly on the Weissenberg photographs or on the reciprocal lattice nets drawn to an appropriate scale.

ISSN:0034-6748    

DOI:10.1063/1.1770094

出版商:AIP    

年代:1943

数据来源: AIP

摘要:

The substitution of Newton rings for mechanical contact permits (a) locating the setting reliably within ±0.0002 mm and (b) elimination of errors due to weight of lens since the optical setting can be achieved before mechanical contact. Guild's original instrument is described; also a new model recently constructed.

ISSN:0034-6748    

DOI:10.1063/1.1770095

出版商:AIP    

年代:1943

数据来源: AIP

摘要:

By using an electron gun, one can effect a great reduction in the contamination of the target by material evaporated from the filament, and can prevent space charge from limiting the target currents available at low voltages. An arrangement which has proved satisfactory is described.

ISSN:0034-6748    

DOI:10.1063/1.1770096

出版商:AIP    

年代:1943

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1770097

出版商:AIP    

年代:1943

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1770098

出版商:AIP    

年代:1943

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1770099

出版商:AIP    

年代:1943

数据来源: AIP

ISSN:0034-6748    

DOI:10.1063/1.1770100

出版商:AIP    

年代:1943

数据来源: AIP