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Diagrams

Understand key diagrams used in this topic with clear visual explanations.

Key Diagrams

SI Base Units Table

A standard table showing the seven SI base quantities and their units:

QuantityUnitSymbol
Lengthmetrem
Masskilogramkg
Timeseconds
CurrentampereA
TemperaturekelvinK
Amountmolemol
Luminous intensitycandelacd

Measurement Diagram

Measurement setup

When measuring length with a vernier caliper:

  • Read the main scale first
  • Add the vernier scale reading
  • Record with appropriate precision and unit

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