… that of emitting coloured rays (used, for example, in neon signs) under the action of high voltage discharges. … used, e.g., for inflating balloons). (2) Neon (gives a rosy orange‑yellow light or, combined with …
… heading, such as time‑registers, watchmen’s tell‑tales and pigeon‑timers, are sometimes constructed without dials. The … (4) Pigeon‑timers for recording the arrival of homing pigeons at the end of a race. These are portable cases …
… mixing together two components. One of these consists of an aqueous solution of sodium silicate and potassium-sodium … also for caulking. These mastics may also be composed of aqueous dispersions of rubber, containing added colouring …
