Tonight we should see the peak of this year's Geminid meteor shower. I wrote about the weird scientific mystery surrounding this particular meteor shower yesterday, and Miles O'Brien wrote a great feature on it for us today.
In the comments on my post yesterday, reader Clayton Yarbrough mentioned that meteors have an effect on radio signals, and I wanted to follow up on that, because it's a pretty cool phenomenon. Basically, meteors can allow you to send radio signals farther than is normally possible. In the video above, you can watch 7th grader Jeffrey Kelly interview a ham radio operator who explains how this works. But first a little background.
Radio waves travel through the air. You are, of course, aware of this. But there's also a limit to how far they can travel. Partly, this is because the radio waves move in what could be characterized as a straight line, but the planet Earth curves. To get around that bend in the horizon, ham operators frequently bounce their signals off a part of Earth's upper atmosphere, called the ionosphere. What makes the ionosphere special? It's ionized, meaning the particles it's made of are electrically charged. That should give you all the background you need to follow along with the video.
Read more on skywave communications (bouncing signals off the ionosphere), and meteor scatter communications.
Jesse Singal requested this shoop, and I delivered. After all, who’s downloading pirated papers? Everyone. (I’ve uploaded this to Redbubble if you’d like a poster—of course, you can just as well pirate it.)
Hydraulic Press Channel shows why carbon fiber and variants like carbon nanotubes have so many uses: depending on the configuration, they can hold up against the hydraulic press.
Roald Dahl spent the last of his days in a special armchair that he modded to help him with back pain from a WWII injury; now, in honour of the Dinner at the Twits interactive theatre events, the craft 40FT Brewery has swabbed some yeast from Dahl’s chair and cultured it to brew Mr. Twit’s […]
If you’re looking to earn a top salary in the tech industry, there’s no better career than coding. However, sometimes the hardest part of entering this career path is knowing where to begin.We took the Complete Web Developer Course because it took that decision out of our hands. This course teaches beginner-friendly coding languages that will also help land an immediate […]
To be a Pokémon master, you’ll need a phone that won’t constantly die on you. Because nothing is worse than seeing the screen go black right as you’ve finally found the Charizard of your dreams.That’s why we’re so excited about the LinearFlux PokeCharger Portable Battery ($39.99). With its 3.0 Amp HyperCharging technology, this slim battery will […]
The tech industry is constantly innovating, and in order to stay competitive, you’ll need to keep up. The Programming Into the Future Bundle was created to teach you the skills employers are looking for at this very moment, including in-demand coding languages like Google Go.The bundle of courses includes instruction on a range of innovative tools that advanced coders […]