EXPERIMENTAL-DETERMINATION OF AIR DENSITY USING A 1-KG MASS COMPARATOR IN VACUUM

被引：33

作者：

GLASER, M ^{[1
]}

SCHWARTZ, R ^{[1
]}

MECKE, M ^{[1
]}

机构：

[1] PHYS TECH BUNDESANSTALT,W-3300 BRAUNSCHWEIG,GERMANY

来源：

METROLOGIA | 1991年 / 28卷 / 01期

关键词：

D O I：

10.1088/0026-1394/28/1/007

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The density of ambient air has been determined by a straightforward experimental method. The apparent masses of two artefacts having about the same mass and surface, but different well-known volumes, have been compared by using a 1 kg balance in vacuum and in air. The differences of apparent masses and volumes yield the air density with a relative uncertainty (1-sigma) of 5 x 10(-5). From measurements made using a third artefact, surface sorption effects caused by the change between vacuum and air conditions gave a coefficient of about 0,2-mu-g cm-2.

引用

页码：45 / 50

页数：6