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Most weapons. Bows and swords are cooler than guns and knives. Trebuchets and catapults are cooler than any form of modern artillery.
Modern warfare, when it becomes necessary, should be fought purely with weapons designed prior to the 16th century. Just replace horses with dirtbikes and ATVs.
Guns are pretty neat once you start to understand the engineering and extremely precise tolerances that go into them.
Dune style personal shields can't be invented soon enough.
Then knife fighting will make a big comeback.
Automatic watches and grandfather clocks. The way they kept track of time using only mechanical principles is crazy. How does my automatic watch recharge itself using only the movement from wearing it and keep accurate track of time. Grandfather clocks are cool because they're so power efficient.
A nixie tube is a bunch of tiny lightbulbs shaped into numbers in a single pack with different pins each turning on a number.
Clearly the modern number display is better in many ways, but you were asking for coolness.
I got a bunch of them to try to build a divergence meter, but I'm too intimidated by the ungodly wiring it would require.
I think Nixie tubes are actually a kind of neon lamp rather than incandescent bulbs; but yes they are very mid-20th century.
They're fluorescent tubes, yes. I wasn't specific about what kind of lightbulbs.
Once widely used, the number of operational lighthouses has declined due to the expense of maintenance and the advent of much cheaper, more sophisticated, and more effective electronic navigational systems.
They were quite important for a long time. We used them for thousands of years, and they're often unique in form, iconic. And they're a good subject for photos and paintings, and I think that the light effect from them is neat. Lots of books and such using them, like ones on remote rocks, to get an isolated setting ("the lone lighthouse keeper").
But the past few decades of technological advancement have probably closed the end of their era.
A lot of older tech had a way more interesting silhouette. You can see this clearly in how many objects live on in icon form. We still often use handset phones, magnifying glasses, gears, or the infamous floppy disk save icon. I think the staying power of these really comes from how ephemeral and formless digital tech can be.
I could mention toasters or pinball machines or flickering light bulbs or unusual people movers, but instead I'll save some time and just link the whole obligatory channel: https://www.youtube.com/@TechnologyConnections
Any mechanical regulation process that used to be handled by actual machine parts. Think of the centrifugal governor, this beautiful and elegant mechanical device just for regulating the speed of a steam engine. Sure, a computer chip could do it a lot better today, and we're not even building steam engines quite like those anymore. But still, mechanically controlled things are just genuinely a lot cooler.
Or hell, even for computing, take a look at the elaborate mechanical computers that were used to calculate firing solutions on old battleships. Again, silicon computers perform objectively better in nearly every way, but there's something objectively cool about solving an set of equations on an elaborate arrangement of clockwork.
Portable music players.
They were the coolest when they used minidiscs.
It's ironic
A microsd card with 64 gigs worth of flac files is smaller, more reliable, and sounds better.
.... But minidiscs still LOOK like the future to me. Something about their shape and size just gives that vibe.
Edit: Phone autocorrect turned flac into 🚩
Exactly, a microSD is boring, it is cool in concept but damn boring IRL.
I would love a minidisc player as a fidget toy!
Older forms of computer RAM.
Before integrated circuits, we had core memory which was a grid of wires and at each intersection was a little magnetic donut that held a single 1 or 0.
https://en.wikipedia.org/wiki/Magnetic-core_memory
Before that they had delay line memory, where they used vibrations traveling down a long tube of mercury, and more bits meant a longer tube to store a longer wave train.
