How any string instrument sounds depends on hundreds of factors; even the tiniest details matter. Seemingly inconsequential things like whether the tree that the wood came from grew on the north ...

These aluminum electrolytic capacitors are common residents on circuit boards ... foils separated by a sheet of paper. It would be tempting to decide the foil were our two plates and the paper ...

But if you don't have any parchment on hand, you may wonder if aluminum foil will also do the job, or perhaps even better.