Measurement Instrumentation Metrology

This book presents the select proceedings of the 11th National Conference on Advances in Metrology (AdMet 2022). The book highlights and discusses the recent technological developments in the areas of fundamental and quantum metrology, physico-mechanical and electrical metrology, time and frequency metrology, materials metrology, industrial and legal metrology, digital transformation in metrology, among others. This book is aimed for those engaged in conformity assessment, quality system management, calibration, and testing in all sectors of industry. The book is a valuable reference for metrologists, scientists, engineers, academicians, and students from research institutes and industrial establishments to explore the future directions and research in the areas of sensors, advance materials, measurements, and quality improvement.

This Springer Handbook of Metrology and Testing presents the principles of Metrology – the science of measurement – and the methods and techniques of Testing – determining the characteristics of a given product – as they apply to chemical and microstructural analysis, and to the measurement and testing of materials properties and performance, including modelling and simulation.

This book offers up-to-date information and guidance on the application of metrology in legal proceedings, clarifying the limits of validity of scientific evidence and presenting an illuminating series of case studies in which measurement uncertainty has played an important role. The fundamental concepts of metrology are discussed, and it is explained how metrology is capable of quantifying the reliability of measurement results and thereby contributing to appropriate decision making. With the aid of the presented case studies, this book will assist readers in understanding how legal decisions should be made in the presence of uncertainty.

In the history of humankind, the sea has always played a key role as a privileged medium for communication, commerce and contact among population centers. It constitutes an essential ecosystem, and an invaluable reservoir and source of food for all living beings. Therefore, its heath is a critical challenge for the survival of all humanity, particularly as one the most important environmental components targeted by global warming.

In the history of humankind, the sea has always played a key role as a privileged medium for communication, commerce and contact among population centers. It constitutes an essential ecosystem, and an invaluable reservoir and source of food for all living beings. Therefore, its heath is a critical challenge for the survival of all humanity, particularly as one the most important environmental components targeted by global warming.

Interferometry, the most precise measurement technique known today, exploits the wave-like nature of the atoms or photons in the interferometer. As expected from the laws of quantum mechanics, the granular, particle-like features of the individually independent atoms or photons are responsible for the precision limit, the shot noise limit. However this “classical” bound is not fundamental and it is the aim of quantum metrology to overcome it by employing entanglement among the particles. This work reports on the realization of spin-squeezed states suitable for atom interferometry. Spin squeezing was generated on the basis of motional and spin degrees of freedom, whereby the latter allowed the implementation of a full interferometer with quantum-enhanced precision.