A loudspeaker is a vital component of every device that plays sound, but while its operation is simple, it’s a...
hackaday
The smart TV is a fixture in most houses, variously an entertainment portal, corporate data gathering tool, or sometimes an...
An old-style PC BIOS served the function of a bootloader in loading the operating system kernel, and of an API...
There are plenty of radios you can buy that pick up MW and SW bands if that’s what you’re into....
has an interesting article about Alan Turing’s nearly-forgotten speech encryption device. Codenamed Delilah, it was in many ways an early form...
The Carrington Event was the most intense geomagnetic storm ever recorded. In September 1859, auroras were visible as close to...
How fast can you count to a million? It would probably take you a while. A computer could certainly do...
Although the basic principle of radio direction finding is easy to understand (measure the phase difference between different antennas, then...
Billions of people use GPS on a daily basis, along with the various other satellite navigation systems available today. But...
Fluoroscopy is probably the best-known method of X-ray imaging: an X-ray beam passes through the subject to be imaged, and...
An old algebra teacher used to say, “You have to take what you know and use it to get what...
What counts as portable is somewhat a matter of opinion, especially over the years. has a portable spy radio of...
There’s not much more nostalgic for many than good ole’ Jimmy Neutron. This was true for , who saw the...
One of the fun aspects of astrophysics is that much of it involves phenomena which you cannot exactly study from...
One of the stun gun modules with battery pack. (Credit: Dani Cruster DiWHY, YouTube) Few things are more satisfying during...
Even if you’re not normally interested in what’s happening in low Earth orbit, you probably heard that last week NASA...
We’ve talked before about number stations — mysterious shortwave transmitters repeating numbers, presumably for clandestine purposes. But, of course, the...
wanted to spend more time listening to a normal radio to cut back on phone use. But the programming wasn’t...
If you are an American of a certain age, you know the Soviet Union launched the first satellite, Sputnik, beating...
There was a time when a CB radio was a simple affair: a small box with a channel selector, volume,...
There are a lot of single board computers on the market these days, so you can be forgiven if you...
When the Artemis lunar program was first conceived, the third mission would have seen astronauts step foot on the Moon...
OK, every operating system is a bit of a stretch — Windows Vista notably didn’t make the cut — but...
Gravity batteries aren’t exactly a new idea. You can store energy by lifting something heavy, converting kinetic energy into potential...
With so many online messaging services to choose from it’s almost as though the daddy of them all, email, has...