Fundamentals of Physical Quantities and Measurements

📋 Course Outline

1. Measurable Quantities
2. Measurement Instruments
3. SI Units and Symbols
4. Mathematical Relationships
5. Physical Quantity Examples
6. Electrical Quantities
7. Power and Frequency

📖 1. Measurable Quantities

🔑 Key Concepts & Definitions

• Quantity (Grandeur): A physical property that can be measured or calculated, such as mass, length, or time.
• Unit: A standardized measure used to express a quantity, such as kilogram (kg), meter (m), or second (s).
• Symbol: A letter or set of letters representing a quantity (e.g., m for mass, t for time).
• Measurement Instrument: A device used to determine the value of a quantity, such as a balance for mass or a thermometer for temperature.
• Relation: A mathematical expression linking quantities, e.g., $m = 38\,kg$ indicates a measured mass.
• Legal SI Units: The official units defined by the International System of Units, such as kilogram (kg), meter (m), second (s).

📝 Essential Points