What does a balance scale measure? What does s spring scale measure? Most will answer "weight" to both questions which we have defined as [mg] mathematically. In both cases we use the device to compare weight. The spring scale does measure weight [mg]. It is calibrated to do that at location. And requires recalibration at a change in. location.
The balance scale does not measure weight. The balance scale compares two pans of matter where [g] in [mg] acts globally on the scale and contents such that the scale will balance at any location. The balance scale compares mass. We use both to compare weight. It is convenient to measure atoms in terms of weight. -- You received this message because you are subscribed to the Google Groups "Epistemology" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/epistemology?hl=en.
