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• IRAMIS: Saclay Institute of Matter and Radiation • Laboratoire Léon Brillouin (LLB) • Leon Brillouin Laboratory (LLB)
• Biologie et Systèmes Désordonnés - GBSD (appareils 7C2, Paxe, Mibemol et Muse) • Disordered System and Biology - GSDB
• Neutrons • Diffraction on disordered materials • Neutrons • Diffractomètres pour systèmes désordonnés
Water bridge (5mm length, 1mm diameter) between two glasses filled with heavy water, under a voltage of 15 kV.
In 1893 Sir William Armstrong reported a remarkable experiment: if a high voltage is established between two wine-glasses filled to the brim with pure water and connected by a cotton thread, a rope of water is formed and remains suspended between the lips of the two glasses. This "water bridge" can subsist for a few seconds even once the thread has been removed .
Recently, a group of physicists from Graz University, Austria  succeeded on establishing a bridge (without any thread!) between the two glasses under a voltage of 20 kV. The length of the bridge may reach values larger than 1 cm, its diameter is of the order of a few mm and the lifetime currently exceeds 1 hour. Under the effect of the electrical field, the local temperature increases and reaches 60° C, a temperature sufficient to break the bridge. More...
Voir aussi le fait marquant :
- Des neutrons pour étudier la structure de l'eau : le pont d'eau lourde
/ See also the IRAMIS highlight:
- Neutrons to investigate the structure of water : the heavy water bridge