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Aujourd’hui — 23 janvier 2025Flux principal

Why electrochemistry lies at the heart of modern technology

23 janvier 2025 à 15:25

This episode of the Physics World Weekly podcast features a conversation with Colm O’Dwyer, who is professor of chemical energy at University College Cork in Ireland and president of the Electrochemical Society.

He talks about the role that electrochemistry plays in the development of modern technologies including batteries, semiconductor chips and pharmaceuticals. O’Dwyer chats about the role that the Electrochemical Society plays in advancing the theory and practice of electrochemistry and solid-state science and technology. He also explains how electrochemists collaborate with scientists and engineers in other fields including physics – and he looks forward to the future of electrochemistry.

Courtesy: American Elements

 

This podcast is supported by American Elements. Trusted by researchers and industries the world over, American Elements is helping shape the future of battery and electrochemistry technology.

The post Why electrochemistry lies at the heart of modern technology appeared first on Physics World.

China’s Experimental Advanced Superconducting Tokamak smashes fusion confinement record

23 janvier 2025 à 14:35

A fusion tokamak in China has smashed its previous fusion record of maintaining a steady-state plasma. This week, scientists working on the Experimental Advanced Superconducting Tokamak (EAST) announced that they had produced a steady-state high-confinement plasma for 1066 seconds, breaking EAST’s previous 2023 record of 403 seconds.

EAST is an experimental superconducting tokamak fusion device located in Hefei, China. Operated by the Institute of Plasma Physics (AISPP) at the Hefei Institute of Physical Science, it began operations in 2006. It is the first tokamak to contain a deuterium plasma using superconducting niobium-titanium toroidal and poloidal magnets.

EAST has recently undergone several upgrades, notably with new plasma diagnostic tools and a doubling in the power of the plasma heating system. EAST is also acting as a testbed for the ITER fusion reactor that is currently being built in Cadarache, France.

The EAST tokamak is able to maintain a plasma in the so-called “H‐mode”. This is the high-confinement regime that modern tokamaks, including ITER, employ. It occurs when the plasma undergoes intense heating by a neutral beam and results in a sudden improvement of plasma confinement by a factor of two.

In 2017 scientists at EAST broke the 100 seconds barrier for a steady-state H-mode plasma and then in 2023 achieved a 403 seconds, a world record at the time. On Monday, EAST officials announced that they had almost tipled that time, delivering H-mode operation for 1066 seconds.

ASIPP director Song Yuntao notes that the new record is “monumental” and represents a “critical step” toward realizing a functional fusion reactor. “A fusion device must achieve stable operation at high efficiency for thousands of seconds to enable the self-sustaining circulation of plasma,” he says, “which is essential for the continuous power generation of future fusion plants”.

The post China’s Experimental Advanced Superconducting Tokamak smashes fusion confinement record appeared first on Physics World.

01/23 GParted Live 1.7.0-beta1

23 janvier 2025 à 15:50
GParted Live is a live distribution with a single purpose - to provide tools for partitioning hard disks in an intuitive, graphical environment. The distribution uses X.Org, the light-weight Fluxbox window manager, and the latest 4.x Linux kernel. GParted Live runs on most x86 machines with a Pentium II or better.

Une connexion fibre 2 Gb/s (et même plus) à 23,99 euros : cette offre fibre réussit le parfait compromis [Sponso]

23 janvier 2025 à 15:49

Avec son offre Pure Fibre, Bouygues Telecom devient le seul fournisseur d’accès à internet à prendre en compte ceux qui ne regardent pas la télé et qui n’utilisent pas de téléphone fixe.
 [Lire la suite]

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