The most important algorithm of all time
The Fast Fourier Transform (FFT) is arguably the most important algorithm of all time. Whether it is or not, it’s certainly the most-used algorithm. I found it interesting that one of the first applications of the FFT wasn’t in communications at all, but rather for detecting underground nuclear explosions.
Worldwide ham radio operators (2000-2022)
A visual depiction of how the number of amateur radio operators have changed since 2000. What’s amazing to me is how the number of radio amateurs has declined in Japan. Watch it on YouTube to see how the author came up with the numbers.
A QRP one-tube CW transmitter (with an Arduino-based oscillator)
One of the attractions of amateur radio—to some at least—is that it includes both the most modern technology (FFTs) as well as those that have been around for 100 years or more (vacuum tubes). Here’s an example of the latter.
Gauss – Again!! There is seemingly nothing in modern math where his name isn’t at or near the root of its development.
Thanks for the video on the FFT.
I thought exactly the same thing when I saw that. Gauss must have been an amazing person.