div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=exploratorium-the-museum-of-science-art-and-human-periscope-with-a-twist-turnhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Exploratorium: The Museum of Science Art and Human Periscope with a Twist Turn the top mirror on a periscope and watch the world go around Personal Pinhole Theater A pinhole camera loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsnetreader034viewer20220429175f5b6268bc07da60c26f2b5chtml5thumbnails1jpg width=140 height=200 divdiv
