Objects in image: Building
Text visible in image: What, is, a, whispering, gallery?, In, the, late, 1800s,, Lord, first, analysed, the, well, known, effect, of, sound, propagation, along, the, walls, of, the, dome, gallery, in, St, Paul's, Cathedral,, London., BALL&IANTERN, 55.5EET(108.4M), 280F, CATHEDRALFLOOR, Whispers, were, found, to, be, easily, heard, from, other, side, the, gallery., Had, be, whispers, hearing, sound, travelling, directly, across, the, gallery., Deduced, that, due, the, reflection, of, sound, from, the, walls, and, that, the, sound, "hugged", the, wall, it, travelled, around., Biosensing, with, Whispering, Gallery, Modes, K., Rowland
Question: who is the author of this book?
Answers: k. rowland, rowland, k. rowland, k. rowland, k. rowland , k. rowland, k. rowland, k. rowland, k. rowland, unanswerable