Dimensional measurements of a silicon sphere

Autor:	R.A. Nicolaus, G. Bonsch
Rok vydání:	2002
Předmět:	Physics Range (particle radiation) Silicon business.industry chemistry.chemical_element Measure (mathematics) Computational physics symbols.namesake Interferometry Optics Volume (thermodynamics) chemistry Volume measurement Avogadro constant symbols business Constant (mathematics)
Zdroj:	Proceedings of 20th Biennial Conference on Precision Electromagnetic Measurements.
DOI:	10.1109/cpem.1996.546754
Popis:	For a precision determination of Avogadro's constant, N/sub A/, the volume of a nearly perfect silicon sphere of 1 kg and about 90 mm diameter, made of a single-crystal, is to be measured with a relative uncertainty of 10/sup -7/. For this, a new interferometric method is used to measure the diameter and its variations in large number of orientations with uncertainties in the sub-nm range.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::276ee38d66f362f1258d37cdedda70d2 https://doi.org/10.1109/cpem.1996.546754 Zobrazit plný text záznamu