Proof of atmospheric pressure Welcome to BFSU: › Forums › Proof of atmospheric pressure This topic has 0 replies, 1 voice, and was last updated 7 years, 5 months ago by Bernard Nebel. Viewing 0 reply threads Author Posts June 28, 2017 at 4:11 pm #3566 Bernard NebelKeymaster Up until about 300 years ago, the idea of atmospheric pressure was unknown. As shown in the linked video, its existence was demonstrated by the now famous “Magdeburg hemisphere experiment” in 1671. https://www.youtube.com/watch?v=luIqVQT4QWs Author Posts Viewing 0 reply threads You must be logged in to reply to this topic.