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Measurements are estimates

Measurements are estimates

Every measurement in physics is an estimate, because instruments have limited resolution and experiments vary slightly. A value like 0.248 m0.248 \,\text{m}0.248m or 12.6 V12.6 \,\text{V}12.6V is therefore never perfectly exact.

Measurements and uncertainties Lesson

  1. A Level
  2. /Physics
  3. /Measurements and uncertainties

Step-by-step lessons on OCR A A Level Physics Measurements and uncertainties. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks across the three papers require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons