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Current issue

ELEKTRO 6/2018 was released on June 6th 2018. Its digital version will be available on June 26th 2018.

Topic: Rotating electrical machines, drives and power electronics; Electromobility

Main Article
Energy platform for vehicle-to-grid/home system
Smart Cities (part 2 – volume 2)

SVĚTLO (Light) 3/2018 was released on June 15th 2018. Its digital version will be available on July 17th 2018.

Accessories of lighting installations
Evening with Foxtrot on the Czech heaven

Public lighting
Timeless luminaire for public lighting – Streetlight 11
Control of public lighting

Energy-saving LEDs boost light pollution worldwide

23.11.2017 | Phys.org | www.phys.org

They were supposed to bring about an energy revolution—but the popularity of LED lights is driving an increase in light pollution worldwide, with dire consequences for human and animal health, researchers said Wednesday.

The study in the journal Science Advances is based on satellite data showing that the Earth's night is getting brighter, and artificially lit outdoor surfaces grew at a pace of 2.2 percent per year from 2012 to 2016. Experts say that's a problem because nighttime lights are known to disrupt our body clocks and raise the risks of cancer, diabetes and depression.

LED light pollution

As for animals, these lights can kill—whether by attracting insects or disorienting migrating birds or sea turtles. The issue isn't just the LED lights themselves, which are more efficient because they need far less electricity to provide the same amount of light. Rather, it's that people keep installing more and more lights.

Read more at Phys.org

Image Credit: Carla Schaffer / AAAS

-jk-