So how does a TV antenna work?

Let’s take the example of a single-band UHF antenna. This looks a bit like a fish skeleton. The “bones” are arranged in pairs on opposite sides of a central “spine”. The bones near the front are shorter than those near the back. The critical difference of course is that an antenna is made of metal. […]

So how do MP3 files work?

MP3 compressed sound files are finally becoming popular with online music stores, now that DRM is on the way out. Although MP3 compression is not quite as efficient as AAC and WMA it is good enough. The files are much smaller than WAV files and audio CD data files – around one tenth of the […]