div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=satellites-gps-laser-scanners-and-even-drones-to-see-small-changes-that-havehtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: · satellites GPS laser scanners and even drones to see small changes that have big impacts over time GEODESY A NEW Geodesy dates back to at least ancient when Eratosthenes used loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader034vdocumentsnetreader034viewer20220423155f0435867e708231d40cda13html5thumbnails1jpg width=140 height=200 divdiv