2 holdings are shelved on this floor. A shared floor records where volumes sit and nothing about what any of them says; these are neighbours, not relations.

• MS 9875.46 Resonance Lamps

  Resonance Lamps are the general class of illumination devices whose output is measured not in lumens but in coherence — the degree to which …

• MS 6533.06 Whispering Galleries

  Whispering Galleries denotes a class of architectural or functional space within the Tower, characterized by a documented or purported acous…