关于量的连续性和离散性:来自物理学和计量学的例子

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION
F. Pavese
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引用次数: 1

摘要

VIM3将量定义为“现象、物体或物质的特性”,留下“量”一词的特征,与相关特性的选定特征相关。问题是:一个性质是否也必然指一种现象、物体或物质的可能粒度?以“质量”为例:它并不总是需要考虑一个现象、物体或物质是否被细分为离散的实体?这取决于分析的框架,也取决于所选择的测量单位。在其他情况下,如温度,宏观性质与原子和分子等颗粒物质的统计性质有关,因此“温度”的当前含义通常在数值水平上消失,实体的统计变得毫无意义。另一个例子是量子物理学。本文阐述了这一问题以及正在制定的可能解决方案。关键词:连续;由颗粒构成的量巨大量子;整数;实数;计数;作用
本文章由计算机程序翻译,如有差异,请以英文原文为准。
About continuity and discreteness of quantities: examples from physics and metrology
The VIM3 defines a quantity as a “property of a phenomenon, body, or substance”, leaving the characteristics of the term ‘quantity’, related to the chosen characteristics of the relevant properties. The question is: does necessarily a property also necessarily refer to the possible granularity of a phenomenon, body, or substance? Take, for example, for the quantity “mass”: it does not always have to take into account whether or not a phenomenon, body, or substance is subdivided into discrete entities? It depends of the frame of the analysis and also on the chosen measurement unit. In other cases, like temperature, the macroscopic properties are related to the statistical properties of granular substances like atoms and molecules are, so the present meaning of ‘temperature’ is generally lost at the numerical level where the entity’s statistics become meaningless. Yet another case is quantum physics. The paper illustrates the issue and possible solutions under development. Keywords: continuous; granular; quantity; magnitude; quanta; integer number; real number; counting; function
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来源期刊
Ukrainian Metrological Journal
Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-
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