Fundamentals of Measurement Technology Prof Wang Boxiong
Fundamentals of Measurement Technology (1) Prof. Wang Boxiong
1 Introduction 1.1 Measurement technology: background and development 1.2 Essence of measurement and its basic prerequIsItes 1.3 Standards and their units
1.Introduction 1.1 Measurement technology: background and development 1.2 Essence of measurement and its basic prerequisites 1.3 Standards and their units
1Introduction Major points to study 1. What is measurement technology all about? 2. Significance of measurement technology in science, production and social progress 3. Major components of a measuring system and their respective functions 4 What to study
Major points to study 1. What is measurement technology all about? 2. Significance of measurement technology in science, production and social progress 3. Major components of a measuring system and their respective functions 4. What to study 1.Introduction
1.1 Measurement technology: background and development Historical background kNowledge acquisition often begins with measurement MEasurement science(metrology )was generated and developed with the development of human society dEarly measurements >Length(distance), time, area and weight, etc
❖ Historical background ❑Knowledge acquisition often begins with measurement. ❑Measurement science (metrology) was generated and developed with the development of human society. ❑Early measurements: ➢Length (distance), time, area and weight, etc. 1.1 Measurement technology: background and development
1. 1 Measurement technology: background and development UThe field of measurement was enlarged continuously, and the means and methods for measurements became more sophisticated >Elle, created by the egyptians in about 3000 B C a unified standard of length Defined as the length of the forearm of the pharao measured from his elbow to the tip of his stretched middle finger plus the width of a palm twig in his hand Realized with a black granite as the primary standard Emperor Qin Shi established a unified system of weights and measures and gave severe punishments to those who violated the system
❑The field of measurement was enlarged continuously, and the means and methods for measurements became more sophisticated: ➢Elle, created by the Egyptians in about 3000 B.C. ▪ A unified standard of length. ▪ Defined as the length of the forearm of the Pharao measured from his elbow to the tip of his stretched middle finger plus the width of a palm twig in his hand. ▪ Realized with a black granite as the primary standard. ➢Emperor Qin Shi established a unified system of weights and measures and gave severe punishments to those who violated the system. 1.1 Measurement technology: background and development