In this video I build and use a vacuum pump powered by falling mercury. more about the pump: https://www.chemistryworld.com/opinion/classic-kit-sprengel-pump/1014874.article Applied Science video: https://www.youtube.com/watch?v=r7NEI_C9Yh0 more 18th century technology using liquid mercury: https://www.youtube.com/watch?v=ms7x9bSlbcU Help me make videos by donating here: https://www.patreon.com/CodysLab