Watch 'Cymatics' and more behind the scenes here: NigelStanford.com/y/rubens-/Cymatics What's a Ruben's tube? A Rubens' tube is an antique physics instrument for demonstrating acoustic standing waves in a tube. Invented by German physicist Heinrich Rubens in 1905, it shows the relationship between sound waves and sound pressure, as a primitive oscilloscope. ► NEW VIDEO Automatica: nigelstanford.com/y/Cytext-Aut... ► Spotify: NigelStanford.com/y/Spotify ► Facebook: www.facebook.com/johnstanford... ► Instagram: www.instagram.com/nigelstanford ► Twitter: twitter.com/nigel_stanford