Measurement and uncertainty

IB Physics: Measurement and uncertainty

AimstextConsiderationsThe idea is that students realise that uncertainties are due not only to the measurement instrument but also to the thing they are measuring and the way they measure it. This idea of half the smallest division is rarely applicable. I hold a meter long stick in front of the class and ask them to estimate the length of a book. The idea that the uncertainty is ± 0.5 m is ridiculous. Use a magnifying...

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