| http://www.w3.org/ns/prov#value | - As will be appreciated from a study of FIG. 30, when the shutter is opened, the light entering the camera includes a bundle of light rays 82 which pass through the windows 76,78 and through the aperture 68 in the film cartridge 12 to the film 56 to record a latent image on the film of the position of the weighted means 80, which position is a function of the instantaneous attitude of the camera.
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