I believe that everyone will have experiment classes when they are young, especially in chemistry experiments. We will all use balances. We use standard weights to weigh the objects on the other side of the balance to carry out the next step of the experiment. Then, when using balances and standard

Error and uncertainty not only have different definitions, but also different concepts. The two cannot be confused, but they are closely related. Error analysis is still the theoretical basis of measurement uncertainty evaluation, and it is even more inseparable when estimating type B components. Op