L'expérience de sable sur plaque avec vibration en mode 19è =)
Popular Science Experiments In Sound During The 19th-Century
Source: hackaday.com
La vidéo:
Steve Mould - Amplifying Invisible Motion
Et pourtant ça bouge ...le pitch:
Motion Amplification and Video Magnification are techniques that find subtle changes in a video that are invisible to the naked eye and amplify them so they become visible. They have huge diagnostic potential in industry and medicine.
Amplifying Invisible Motion
La vidéo:
