“”The Thwaites Glacier in Antarctica, often called the “Doomsday Glacier,” is one of the most fragile ice formations on Earth. Covering an area roughly the size of Florida, it contains enough ice to raise global sea levels by over two feet if it completely melts. Its collapse could also destabilize neighboring glaciers, potentially causing sea
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https://ieeexplore.ieee.org/document/8874589 Matt Undecided showed a photo of it.
Details on assembling this AM radio kit that’s mostly in Chinese. Note that “http:” is not secure so it might need https: instead. http://www.radioboatanchorblog.com/blog/hx-6b-chinese-radio-kit-build?fbclid=IwY2xjawLcfHdleHRuA2FlbQIxMQABHkIPEJW7iGvqm7ooztFySxe38gLI2guH4ymbV-sXwPbOoqyIxvYFQxL0J5j4_aem_Msqfjb36T0JDEY92jt3izQ
https://morsecode.world/international/translator.html
Hot Arcs From Flyback Transformers Play “Take On Me” by Ah-hah. The flybacks are driven by a power amp made for driving these flyback transformers. Looks like just a few turns of 18 AWG wire are wrapped around the bare ferrite cores. A highly effective plasma speaker, better sounding than a Tesla coil. https://www.facebook.com/franzolielectronics/videos/272985324667136/?mibextid=9drbnH&s=yWDuG2&fs=e
He has a strong Aussie accent, a bit hard to understand. It’s a 28 min. YouTube video. He says BD139s have a fT of 250 MHz, but the datasheet I have does not specify any fT because the D in BD139 means they are a low frequency device, not meant for VHFs or RFs in
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Long article https://sites.google.com/site/transistorhistory/Home/us-semiconductor-manufacturers/raytheon-part-one-2 A comprehensive history of the Raytheon corporation. Also information about other companies.
Unrecognized early creator of electronic music. https://www.facebook.com/reel/1778652559335515?mibextid=9drbnH
This is an interesting article: mainly about a miniature Tuneable YIG – yttrium-iron-garnet – filter that could replace many fixed filters. Quote “”Wireless devices use different filters for different frequencies, with the effect that covering all frequencies or bands requires large numbers of filters that take up substantial space. (The typical smartphone includes upwards of
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Have you got a USB disk drive or flash drive that was sold at a price so low it was “too good to be true”? Steve Gibson’s Validrive will do spot checks to see if the SSD or flash drive is really what it claims to be. Fake drives are sold for cheap and the
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