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Current issue

ELEKTRO 7/2020 was released on June 24th 2020. Its digital version will be available on July 24th 2020.

Topic: Cables, conductors and cable engineering

Main Article
New traction power supply technology 25 kV/50 Hz (part 2)

SVĚTLO (Light) 3/2020 was released on June 8th 2020. Its digital version will be available on July 8th 2020.

Professional organizations activities
Announcement: LUMEN V4 2020 is cancelled
What is new in CIE, April 2020

Accessories of lighting installations
Foxtrot as a “Master Control” in Hotel Breukelen
Lighting regulators – control of lighting on the constant level

Ex-Tesla and NASA Engineers Make a Light Bulb That’s Smarter Than You

25. 9. 2014 | |

Sometime in early 2013, one of the delivery operations engineers at Tesla leaned back in his chair and took a look around the Silicon Valley office. “It was a sunny day, and I looked up and I thought, ‘Why are these lights on with full power, when full sunlight is coming through the window?’” says Neil Joseph. An online search for a better, responsive bulb only yielded a few expensive commercial products. That October, Joseph (who says even as a kid, his two fascinations were lights and cars) left Tesla to start his own lighting company.

Via: Wired, Source: Stack