… or standardise their colouring power. The addition of small quantities of surface-active products to encourage … other media. These dispersions are usually in the form of small plates or lumps and are used as raw materials for …
… makes them an ideal raw material for the preparation of smokeless powders and the manufacture of man‑made fibres … for the manufacture of buttons, beads, rosaries and other small fancy‑goods. They include, inter alia : (1) …
… from a mirror to the viewfinder by means of a special prism (single lens reflex). Other apparatus of this type … of the shutter release, and some are in the form of a small wrist‑watch. (10) Aerial survey cameras designed to …
… a pedestal or other support with a directing or elevating mechanism, is fed with appropriate voltages from special … factor under examination. (4) Fire alarms incorporating smoke detectors containing a radioactive substance. The …
