Fundamental Physics Flashcards
What is a systematic error?
Error that affects all measurements by the same amount e.g. zero error . (This wouldn’t affect gradient of the line only shift the line)
Difference between precision and accuracy
accuracy is how close you are to the real value where as precision is how close the results are to each other
What is a random error?
an unpredictable error typically affects gradient of results, reduce random errors by taking multiple measures (removes anomaly)
What is Absolute uncertainty?
Half of the range
Absolute uncertainty of a device?
smallest scale reading of that device
How do you work out percentage uncertainty?
(Absolute uncertainty/value) X 100
How do you combine uncertanties?
For absolute you just plus or minus but for percentage you times or divide
