Slides & Photo Negatives

Have you ever been to a presentation where they say “next slide”? Well then you are OLD LOL… I n all seriousness though years ago people had carousels of slides and a project to display their slides; like a vacation or in school like history. These slides were developed by Kodak in the 1930’s and were popular with amateur and professional photographers worldwide.
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of the photographed subject appear darkest and the darkest areas appear lightest. … In the case of color negatives, the colors are also reversed into their respective complementary colors.