ISSN:0021-8979    

DOI:10.1063/1.1710396

出版商:AIP    

年代:1938

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1710397

出版商:AIP    

年代:1938

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1710399

出版商:AIP    

年代:1938

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1710400

出版商:AIP    

年代:1938

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1710401

出版商:AIP    

年代:1938

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.1710392

出版商:AIP    

年代:1938

数据来源: AIP

摘要:

The experimental curve is determined which shows the relation between the flow of blood in cubic centimeters per minute and the deflection of the galvanometer in millimeters for a range of flows between zero and about 3 cc per minute. The curve is similar to that calculated by Burton for the Rein thermostromuhr and that experimentally obtained by Jongbloed and Noyons with their aerothermorheograph. The maximal deflection of the galvanometer occurs at a flow (Ringer's solution) of about 0.08 cc per minute and for smaller or greater flows the deflection decreases. Since the deflection of the galvanometer approaches zero for very small flows and becomes zero for cessation of flow, whereas it usually decreases for increase of flow, one must be careful to distinguish between a cessation of flow and an increase. Difficulty will not arise if sufficient time is allowed for the establishment of thermal equilibrium. Certain controversies have arisen because this particular limitation of Rein's thermostromuhr was disregarded. The method, as we use it, is wholly unsuited for indicating variations in blood flow which occur in less than sixty seconds. It may be very reliable for indicating changes in blood flow which occur over a longer period of time.

ISSN:0021-8979    

DOI:10.1063/1.1710393

出版商:AIP    

年代:1938

数据来源: AIP

ISSN:0021-8979    

DOI:10.1063/1.4757201

出版商:AIP    

年代:1938

数据来源: AIP

摘要:

The critical temperature of glass surface for condensation of mercury vapor as a function of density of atoms striking the surface has been found. The results indicate a large nucleus composed of many atoms is necessary for condensation to start; the heat of vaporization of an atom from the nucleus is 13.2 kcal. per mole. Some qualitative observations are reported, showing both rapid and slow adsorption of mercury atoms on glass and metal, and a considerable adsorption of mercury ions.

ISSN:0021-8979    

DOI:10.1063/1.1710394

出版商:AIP    

年代:1938

数据来源: AIP

摘要:

A simple method of analyzing lightning photographs taken with moving film cameras is described. The results of analysis of two air discharges with some interesting features and one very unusual type of discharge are presented. Certain discharges at the close of storms and the correlation of electrical and photographic measurements are discussed.

ISSN:0021-8979    

DOI:10.1063/1.1710395

出版商:AIP    

年代:1938

数据来源: AIP