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Current issue

ELEKTRO 10/2016 was released on September 27th 2016. Its digital version will be available on October 27th 2016.


Topic: 22nd International trade fair ELO SYS 2016; Electrical Power Engineering; RES; Emergency Power Units


Main Article

Power system management under utilization of Smart Grid system

Printed edition of SVĚTLO (Light) 5/2016 was released on September 19th 2016. Its digital version will be available immediately.


Standards, regulations and recommendations

Regulation No 10/2016 (Prague building code) from the view of building lighting technology


Lighting installations

PROLICHT CZECH – supplier of lighting for new SAP offices

Hold up the light to see in work your work

Modern and saving LED lifting of swimming pool hall

New record temperature for a superconductor

21.08.2015 | Ars Technica; Johannes Gutenberg University | www.arstechnica.com

Superconductivity was first seen in metals cooled down to close to absolute zero. But after exhausting every metal on the periodic table, the critical temperature at which the metal transitions to superconductivity never budged far from those extremely low temperatures.

That changed dramatically with the development of cuprate superconductors, copper-containing ceramics that could superconduct in liquid nitrogen - still very cold (138K or - 135°C), but relatively easy to achieve. But progress has stalled, in part because we don't have a solid theory to explain superconductivity in these materials.

New temperatures in superconductor

Now, taking advantage of the fact that we do understand what's going on in superconducting metals, a German research team has reached a new record critical temperature: 203K, or -70°C, a temperature that is sometimes seen in polar regions. The material they used, however, isn't a metal that appears on the periodic table. In fact, they're not even positive they know what the material is, just that it forms from hydrogen sulfide at extreme pressures.

Read more at Ars Technica

Image Credit: Brookhaven National Lab