Shadow mask tube - first colour. 4K use LED/LCD and OLED Technology

4k Movies and 3D Television Broadcasts

4K Movies in the very Beginning The trend for videophiles to spend thousands of dollars until they get the perfect picture continues. Can the human eye perceive the difference between 1080p and 4k and now 8k sitting 10 foot away from the display? This has become one of the arguments against ultra high definition and…

VIN Number

VIN Numbers – vehicle identification

VIN Numbers – why the secret? The Vehicle Identification Number of your vehicle is it’s personal ID and of course we don’t advocate anyone send in a picture of his car, registration and VIN number for security reasons but what is that which makes the publication of batch numbers so secret? There are countries which…

VCR Technology - sophisticated machines

Sophisticated Machines – VCR Technology

Consumer Electronics – VCR technology Open up any DVD recorder and you will be disappointed to find the lack of wires, coils, relays, power transistors, motors and springs, most are hidden or neatly packed away in little plastic slots. Digital technology is impressive but for the geek not nearly as impressive as the electronics and…

450px-2007Computex_e21Forum-MartinCooper

Greatest inventions – through the ages

Greatest Inventions – Inspiration Vs Perspiration There are literally thousands of pages on the world’s greatest inventions on the web and chronologically most start with an incredible man, Leonardo da Vinci. Discovery’s ‘Doing DaVinci’ goes out to prove that most of his plans were well thought out, documented and furthermore could be fully functional over…

PAVE PAWS -long range radar

Long Range Radar under the spotlight

┬áLong Range Radar, Early Warning Systems, Over The Horizon Radar   With missing flight MH370 being topic A at everyone’s dinner party these days it comes as no surprise that the press, plus a few learned individuals are crying out for an overhaul of our aviation communication and radar systems. Of course as most professional…

Missing Flight MH370 – some brief lessons in hindsight

MH370 – the conspiracy theory sells newspapers!   I am not a big fan of the news media when it comes to conspiracy theories and sensationalism. With the missing Malaysian MH370 in everyone’s mind the first thing that became most apparent was our sifting through media reports rather than wreckage. The first theory was the…

Science on the Web – Part Three, All About Circuits

All About Circuits – Tony R. Kuphaldt   Tony R. Kuphaldt is an instructor at Bellingham Technical College in Bellingham, Washington. If you are planning on a career in electrical or electronic work All About Circuits is dedicated to you. Go through each and every chapter (under sitemap), do not skip and do the tests.…

SSB Transceivers - the distress silent period.

SSB Transceivers down the years

SSB Transceivers – In the very beginning Bouncing back from our article on the ARRL we thought it may be pertinent to drop in a few words about SSB communications based on two emails we received from interested readers, both of whom are keen listeners on the amateur bands. Although this may be a bit…