At her company's large open-plan office in lower Manhattan, the material is strewed all over shelves, desk and work table near a window overlooking the East River.
Long story short: I wrote it as a chapter book instead of a coffee table book because I have a lifetime of material on the subject and I wanted to share it.
Ironically, today's most fashionable battery material, lithium, is the third-lightest element in that table and therefore one for which no such relativistic effects can be expected.
Set the company's iPhone-sized speaker on a desk, coffee table or even a surfboard and it transfers sound waves into that material -- creating an on-the-fly subwoofer.