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Y10S1-measurements
Dariusz Aksamit
Created on September 6, 2023
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Transcript
Y10 Section 1 Part 1 - measurements
Measurements, forces & motion
https://www.amountofsubstance.com/si-unit-symbol-prefixes
https://www.antarcticglaciers.org/glacial-geology/dating-glacial-sediments-2/precision-and-accuracy-glacial-geology/
Estimation of uncertainty - precision
Significant numbers - how many? 1.23472810192485691209312693 s?
1.0 is NOT EQUAL to 1.00 nor to 1
ACCURACY
Box and whisker / box plot
- Experimentator reaction time (overestimation on time?)
- Person's tiredness?
- Visual clue ("I'm going to clap" - underestimation)
- version with closed and opened eyes!
- Precision of measurement device
- Time of arrival of signal (where you sit)
- here - negligible, as orders of magnitude lesser than reaction time
Factors influencing result?
7 · The rest of side talks:D
6 · Assessing uncertainties (precision of device & standard deviation of a measurement series)
5 · Taking average of series of measurements
4 · Significant numbers
3 · Precision
2 · Accuracy
1 · SI Units
Content