Let's post something technical and about, which recently learned, read, watched and heard.

https://youtube.com/watch?v=w7h0uTDiexA Multiplayer on Sega Megadrive. It turns out you can make a cable on your knee and everyone will work. You can run together in Zero Tolerance.

https://youtube.com/watch? v=Aw3K_obepyo[/youtube]youtube]ymyIEGRw4-U [ASTRA Bridge Deckbelagsarbeiten (flooring work). Put such a "flooring" (bridge) and corny repair the highway without damage to traffic. It can withstand trucks.

https://youtube.com/watch?v=m0VDEUCBjVw A piezo contact mic treated with nitric acid. Acid and piezoelectric. An interesting way to create noise samples, I recommend visiting the channel.

https://youtube.com/watch?v=ThlH9k1G7y8 This engine was considered state-of-the art for two decades - inside the fameous Re 425. Just an interesting Swiss train and its review before retiring. The line carries only cars, since the path through the mountains is very winding and long, it is easier to use this train.

https://youtube.com/watch?v=leM47vupcQo Japanese maglev, in fact a test line, but you can drive and for locals it is free.