{"title":"A pocket spectrophotometer","authors":"P. Nutting","doi":"10.6028/BULLETIN.042","DOIUrl":"https://doi.org/10.6028/BULLETIN.042","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1906-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130481548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Polarimetric sensibility and accuracy","authors":"P. Nutting","doi":"10.6028/BULLETIN.038","DOIUrl":"https://doi.org/10.6028/BULLETIN.038","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1906-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131046554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Positive charges carried by the canal rays","authors":"L. Austin","doi":"10.6028/BULLETIN.024","DOIUrl":"https://doi.org/10.6028/BULLETIN.024","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1905-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124000770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Use of white walls in a photometric laboratory","authors":"E. P. Hyde","doi":"10.6028/bulletin.021","DOIUrl":"https://doi.org/10.6028/bulletin.021","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1905-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123295535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Radiation from platinum at high temperatures","authors":"G. Burgess","doi":"10.6028/BULLETIN.025","DOIUrl":"https://doi.org/10.6028/BULLETIN.025","url":null,"abstract":"The study of the emissive properties of substances which can be brought to high temperatures without undergoing chemical or physical changes of surface is important in optical pyrometry for the practical realization and measurement of high temperatures; for a knowledge of the emissive properties of platinum, for instance, at various temperatures, gives a ready means of obtaining true temperatures from observations of the ''black-body temperatures\" as measured by an optical pyrometer. A platinum strip may replace to advantage an experimental black body, especially at temperatures above 1,500° C, and may conveniently serve as a luminous source for the comparison or calibration of optical pyrometers. It is the object of this paper to interpret the observations^ of Dr. Waidner and the author on the departure of platinum from blackbody radiation for red, green, and blue light, in terms of the now better known values of the higher temperatures involved, and as expressed by Wien's law as applied in a form first suggested by Lucas.* For a black body, Wien's law for the distribution of energy in the spectrum may be written","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1905-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131442917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Detector for very small alternating currents and electrical waves","authors":"L. Austin","doi":"10.6028/BULLETIN.023","DOIUrl":"https://doi.org/10.6028/BULLETIN.023","url":null,"abstract":"e A number of years ago I noticed that a copper sulphate cell with copper electrodes, one of which was considerably larger than the other, showed an apparent rectifying effect for alternating currents of the order of those produced by speaking with the mouth pressed against an ordinary telephone receiver. In the original experiment the rectifying cell, the telephone, and a d'Arsonval galvanometer of moderate sensibility were connected in series. The lowest tone spoken into the telephone produced a deflection of the galvanometer, and a louder one drove it from the scale. Recently 1 have again taken the matter up, desiring, if possible, to find an explanation of the rectifying effect, and also to test the usefulness of the detector in the laboratory. To test the sensibility of the detector for alternating currents, a known alternating current was passed through a bridge wire of about 1 ohm resistance, and from this, by means of sliding contacts, various potential differences were applied to the detector (see fig. 1). A form of key was used which kept the detector circuit short-circuited Fig. 1.—Connections for detector (form 1) .","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1905-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132299192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A study of the silver voltameter","authors":"K. E. Guthe","doi":"10.6028/BULLETIN.003","DOIUrl":"https://doi.org/10.6028/BULLETIN.003","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"43 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1904-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115066721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The so-called international electrical units","authors":"F. A. Wolff","doi":"10.6028/BULLETIN.004","DOIUrl":"https://doi.org/10.6028/BULLETIN.004","url":null,"abstract":"As one of the most important questions likely to be considered by the St. Louis International Electrical Congress will be that of redefining the fundamental electrical units, it may therefore not be out of place to briefly review the efforts which have thus far been made to bring about international uniformity. The need of a definite and universal system of electrical units was early recognized, and became a necessity as soon as industrial applications of electricity were made. At first the principal measurements were those of resistance (line resistance, insulation resistance, measurements for the location of faults, etc.). These were expressed in terms of some entirely arbitrary standard, such as the resistance of a given length of an iron or copper wire of given cross section. This natu-","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1904-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130825532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On fibers resembling fused quartz in their elastic properties","authors":"K. E. Guthe","doi":"10.6028/BULLETIN.008","DOIUrl":"https://doi.org/10.6028/BULLETIN.008","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1904-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127001965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The spectra of mixed gases","authors":"P. Nutting","doi":"10.6028/BULLETIN.005","DOIUrl":"https://doi.org/10.6028/BULLETIN.005","url":null,"abstract":"","PeriodicalId":227231,"journal":{"name":"Bulletin of the Bureau of Standards","volume":"36 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1904-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114093141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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