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Current issue

ELEKTRO 5/2018 was released on May 16th 2018. Its digital version will be available on June 6th 2018.

Topic: Lightning and overvoltage protection; EFS, EPS; ELO SYS 2018

Main Article
Energy router and its role in smart grids
Smart Cities (part 2 – volume 1)

SVĚTLO (Light) 2/2018 was released on March 16th 2018. Its digital version will be available immediately.

Fairs and exhibitions
Interior elite again after year in Letňany

Luminaires and luminous apparatuses
Emergency lighting
The future of industrial lighting has name INNOVA
GOLY luminaire – the practical high bay luminaire
McLED® – brand name of first rate quality LED lighting
VOLGA EU luminaire our choice for Europe

Shooting at the speed of light

09.12.2014 | |

Light reflectionFor most of us, high-speed image capture, say 120 or 240 frames per second, is enough to get a good look at stuff happening in the blink of an eye -- like a water droplet hitting the ground or a Bichon Frisé snagging his favorite ball. For faster subjects, industrial-strength high-speed cameras can grab tens of thousands of frames per second (or more). But when your rapidly moving target is light itself, you're going to need something a bit quicker -- to the tune of 100 billion fps, according to Nature.

Using a technique called "compressed ultrafast photography" (CUP), researchers at Washington University in St. Louis can track light as it travels and interacts with objects. It's a new spin on the streak camera method, where a sensor moves along with the light to record its motion. Previous streak camera setups have been limited to narrow, one-dimensional views, but the CUP technique allows for two-dimensional image capture. One example video shows a laser pulse sauntering by and reflecting off a mirror in a few tens of picoseconds (trillionths of a second).

 

Further reading at engadget.com
Image credit: Nature