Measurements and Experimentation - Units and Measurement

Vocabulary flashcards covering the basic concepts, definitions, and properties of measurements and units in physics.

Measurement

The process of comparison of the given physical quantity with the known standard quantity of the same nature.

Unit

The quantity of a constant magnitude which is used to measure the magnitudes of other quantities of the same nature.

Magnitude of a Physical Quantity

The expressed value of a measurement given by the formula $\text{Numerical Value} \times \text{Unit}$.

Properties of a Unit

The four essential requirements for a standard measurement unit: convenient size, unambiguous definition, reproducibility, and invariance across space and time.