Topic 1: working as a physicist Flashcards
Define accurate
A measure of how close a measured/calculate by repeated measurements
Define concordant
Concordat/precision is a measure of the consistency of values obtained by repeated measurements
Define parallax error
the error that occurs due to incorrect positioning of the eyes while taking a reading on a measuring scale.
give an example of a systematic error
an error of ten
What is a random error
shifts all your measurements by random amounts
What is a systematic error
error that shifts values by the same amount e.g a factor of ten
What is uncertainty
How do you calculate absolute uncertainty of a value of a range of values
half of the range
How do you calculate absolute uncertainty of a value
Half the resolution
How do calculate % uncertainty
absolute uncertainty/measurement x 100
What happens when you add % uncertainty
you add the uncertainties
How do u calculate percentage difference
accepted value-measure value /accepted value x100
What happens when you divide a % uncertainty
you add the uncertainties
What happens when you subtract % uncertainty
you add the uncertainties
What happens when you times % uncertainty
you add the uncertainties
