"Version: 20180901"--Title page verso.Includes bibliographical references (page 25).1. Introduction -- 2. Background -- 3. Current directions -- Fundamental constants instead of units -- The Kibble balance -- X-ray crystal density method -- 4. Outlook.Units are at the heart of science and technology. Most measurements require units to express their result. The International System of Units (SI)…
"Version: 20180901"--Title page verso.Includes bibliographical references.1. Standards of physical quantities -- 1.1. Introduction -- 1.2. The time and frequency standard -- 1.3. The length standard -- 1.4. The mass standard -- 1.5. From macro to micro2. Historical role of precision measurements of time and frequency for the development of physics -- 2.1. Introduction -- 2.2. Change from Ptolem…
"Version: 20190401"--Title page verso.Includes bibliographical references.1. All measurements have uncertainties -- 1.1. Introduction -- 1.2. Measurement uncertainty in sports -- 1.3. Are uncertainties always acceptable? -- 1.4. Chaos2. What is measurement uncertainty? -- 2.1. Introduction -- 2.2. Statistical and systematic uncertainties -- 2.3. Accuracy and stability3. Units of physical values…
"Version: 20210205"--Title page verso.Includes bibliographical references.1. Nano dimensional standards -- 1.1. Nano dimensional standards -- 1.2. Metrological atomic force microscopes -- 1.3. The guide to the expression of uncertainty in measurement (The GUM, ISO/IEC Guide 98-3:2008) -- 1.4. Summary2. One-dimensional grating -- 2.1. Importance of one-dimensional grating as a nano dimensional s…