How is uncertainty presented in physics?

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 1K views
MBBphys
Gold Member
Messages
55
Reaction score
0

Homework Statement


How is uncertainty presented in physics?
If we have:
5.76 m rounded-->wouldn't the range of uncertainty be between the lower and upper bound:
5.755m - 5.765 m
However, my physics teacher said that, as the ruler you are measuring with in this scenario goes down to 0.01 m, you cannot go below that, so the range of uncertainty:
5.75m - 5.77m
Am I confusing lower/upper bound and range of uncertainty here?

Homework Equations


N/A

The Attempt at a Solution


N/A
 
Physics news on Phys.org
I agree with your interpretation.

At university one of our lecturers told us that humans were actually quite good at estimating to within 1/10th of the smallest scale. In other words if your smallest scale is centimetres then humans are quite good at estimating to within +/- 1mm.