- Original release
- Previous episode S01E59 - BALLONS D'HYDROGÈNE À 10000FPS - Phantom Day #3
- Number S01E60
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External links
YouTube page
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Last update
2 novembre 2025 - 21:19
on 11 databases
Bulles de Vide ! - La Cavitation [Science 2.0]
Un simple coup sur une bouteille peut faire apparaître des bulles... De rien.
PLUS EXPLICATIONS:
► https://www.youtube.com/watch?v=t8L-XjpOruc
L'extrême basse pression fait bouillir une partie de l'eau, ces bulles contiennent alors très peu de gaz avant d'imploser et de rétablir l'équilibre.
Si on s'en tient à la définition de "vide", même l'espace ne l'est pas ! Mais la pression est tellement basse qu'on parle souvent de "bulles de vide" par abus de langage.
En plus du phénomène de vapeur d'eau compressée/décompressée, la propagation et l'écho de l'onde de choc du marteau peut aussi être à l'origine des oscillations... Fascinant !
Des Slow-Motion ÉPIQUES grâce à la caméra de mes amis The Frenchies ! ►http://www.youtube.com/user/Ze2Frenchies
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