Archives for category: Uncategorized

Application for easy reading of past and forecasted geomagnetic Kp index.



Race track lap time of electric vehicles. Timing one lap of driving on the Nürburgring Nordschleife provides a good measure of car performance, including acceleration, top speed, cornering and general handling. The article lists lap times for electric vehicles.


At FASE Micro-Copter, a Dictionary with explanation of words and technical terms used for UAS flight.


There are many types of rechargeable batteries: NiCd, NiMH, Pb, Li-Ion, LiPo etc.. Each type have their own characteristics and are suited for different purposes.

This article explains about power, energy, wear and care of NiMH and LiPo batteries.

Rechargeable Batteries


Speed testing flash memory and hard disks

Storage size is not the only important factor for flash memory and disk drives. Data transfer speed is very important for efficient use of the drive.

When testing data transfer speed it is important to use a method that is actual testing the storage device and not just Operating system cache or RAM buffers on the device. Only this way can the true sustained transfer speed be measured.

Sustained transfer speed can most easily be tested with H2testw application.

In the article a selection of SD cards (Secure Digital), CF cards (Compact Flash), USB sticks, SSD (Solid State Disk) and magnetic hard disks are tested. It is not an exhaustive test of all available flash memory or hard disks, merely a tiny subset.

Drive Speed


Cebit is the world largest ICT exhibition. It runs every year at the beginning of March in Hannover DE.

Multi-rotor helicopters as micro-copter and development scale model of soon human flight were on display at Cebit this year. Also flexible display walls, wireless charging add-on for Samsung Galaxy S3 and more 3D printers. This beside the usual selection of new PC and notebooks.


Cebit 2013 photo report

Movies are like magic, they are able to put the most fantastic scenes together and can claim the location to be anywhere. It works in the story, but reality is often different.

Article with examples of filming locations for Bourne Identity and other films.

The sun is shining and spring time has arrived in Luxembourg.2012-05-01_018_BurerBiergWindFarm_s

Berlin congress center – Berlin congress center

Photo from Andasol 2 at Guadix ES before plant went into operation.

Andasol 2

Andasol 2 CSTP