Question 3: Color photography is almost as old as black-and-white, with early experiments dating to ________'s experiments with Anthotype from 1842, and Lippmann plate from 1891.
Question 4: Polyester sleeves and encapsulation have been praised for their ability to protect the photograph from ________ and environmental pollution, slowing the reaction between the item and the atmosphere.
Question 5: A photograph (often shortened to photo) is an image created by ________ falling on a light-sensitive surface, usually photographic film or an electronic imager such as a CCD or a CMOS chip.