Agenda
- Estimate the atoms in one paperclip — any method, defended out loud
- Post the estimates; they will span several orders of magnitude
- What every method needed and none had — a bridge from mass to count
- Weigh a stack of paper to get the mass of one sheet — same trick, smaller
- Name it: Significant Figures and Units — how much of a number you keep
- Practise: Significant Figures in Practice on your own measurements
Things to do before our next class
- Significant Figures in Practice — the first two sets.
- Journal: your paperclip estimate, and what you would need to do better.