… was taken, and the light source is cut off when the film is being moved through the projection gate. The light source in … whereas digital format sound tracks are printed either on the edges of the film, outside the sprocket … Other cinematographic projectors may be equipped with either a photoelectric or a magnetic sound-head depending …
… bodies which are impervious to ordinary light and that their absorption increases with the density of the bodies … apparatus . Both the penetrating power of X‑rays and their destructive effect on certain living tissues are used … industry for checking metal parts, etc., without damaging their structure. (3) Apparatus having a measuring …
… or included. ‑ Chandeliers and other electric ceiling or wall lighting fittings, excluding those of a kind … illumination of rooms , e.g. : hanging lamps; bowl lamps; ceiling lamps; chandeliers; wall lamps; standard lamps; …
… The most important are listed below according to their non‑metal component (* ) : (A) COMPOUNDS OF FLUORINE … suffocating gas. Sulphur dioxide is presented either liquefied under pressure in steel bottles, or in … it extinguishes flames. Carbon dioxide can be presented either as a liquid (compressed in steel cylinders), or as a …
… music, etc.). This includes recording based on the receipt of a sound-wave or by other methods, e.g., by … Sound may be photoelectrically recorded on film as a strip, either (a) of variable area or (b) of variable density. …
… and white (or yellow) oats. This heading covers grains with their husks as well as those which in their natural state have no husk or hull, provided they have … only oats regarded by the competent national authorities as being for sowing. …
