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: where did lord rayleigh perform his research?
Answers: st paul's cathedral in london, london, st paul's cathedral, london, st pauls cathedral, london, st paul's cathedral, along the walls of the dome gallery in st. paul's cathedral, london, st. paul's cathedral, london, london , st paul's cathedral, london, st. paul's cathedral, london