Talking pictures : how they are made and how to appreciate them (1937)

Glossary Bi-pack: A form of film, used in color photography, which has two color-sensitive emulsions, essentially in contacts. Bit: Small part in either a stage play or photoplay, but one with speaking lines; next step from non-speaking "atmosphere" or '"crowd" appearances. Blimp: A light metal cover, usually of cast aluminum, which fastens tightly over a camera, keeping from the stage and the recording microphone the familiar "clicking" noise of the camera. Bloop: Sound made when in the reproductive projector a beam of light passes through a sound track which has been badly spliced or patched; or through the synchronizing marks on sound track and motion picture film. Blooping patch: A black section, approximately triangular in shape, introduced over a splice on a positive sound track to prevent the noise (bloop) which the splice would otherwise cause during the reproduction. The patch effects a gradual diminution of light transmitted through the sound track, followed by gradual restoration of the original value. The patch may be applied with black lacquer or may be a triangle of black paper or film cemented on the track. Blow-up: Still photographic term for a very large print made from a small negative. Blows: When an actor forgets his part, one says that he "blows his lines." Blue glass: A round or square piece of specially made blue optical glass; used by head cinematographers to translate the natural colors of a setting into the black, white, and gray values of the non-colored motion picture. Blurb: Slang for short newspaper item in praise of a theatrical attraction. Bon-bon : A type of spotlight. [303]