Examlex
Match each description of a mating system with the most appropriate term.
-Male northern fur seals aggressively guard harems of up to 40 females.
Magic Lanterns
Early projection devices used before the advent of cinema, capable of projecting painted images onto a surface, often used for entertainment and educational purposes.
Motion Toys
Mid-nineteenth century devices that facilitated the viewing of multiple moving images. See also thaumatrope; phenakistoscope; zoetrope; praxinoscope.
Sound on Disc
An early method of providing synchronized sound to silent films using records played in conjunction with the film's projection, before the advent of sound-on-film technology.
Photographic Gun
A device designed in the early history of photography to capture images quickly, resembling the operation of a gun.
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