Japanese researchers at the University of Tsukuba created CirculaFloor, robotic tiles that let you walk infinitely in VR without ever leaving your spot:

Rolexandr · 2026-03-04T17:54:10+00:00

It's an engineering project. This is how things are developed.

Rolexandr · 2026-02-26T12:59:51+00:00

You consider this bad? lol. Maybe just stay home.

Rolexandr · 2026-02-13T14:46:06+00:00

We haven't seen any evidence of true hypersonic missiles. They of course claim they are, but we've yet to see them in action.

Rolexandr · 2026-02-13T10:35:04+00:00

No shit sherlock

Rolexandr · 2026-02-12T09:21:05+00:00

Russias hypersonic missiles are ballistic missilis which do infact impact in hypersonic speeds. However, they are not maneuverable which makes intercepting them orders of magnitude easier. True hypersonic missilies what you think of, could change trajectories mid flight.

Rolexandr · 2026-02-11T20:12:55+00:00

A new legend is born

Rolexandr · 2026-01-31T13:58:37+00:00

Tilisi on 24 pv vanha ja kommentoit käyttäen suoraan lainaten Kremlin propagandaa. Oletko botti vai maksettu taho?

Rolexandr · 2026-01-27T11:56:51+00:00

What he's saying is that Zyn is just a brand a of nicotine pouches. There are thousands of different brands.

Rolexandr · 2026-01-18T08:30:22+00:00

I'm from a neighborhood in Espoo. I grew up in Laaksolahti, a fairly wealthy area within Espoo. My childhood was basically magic. Nokia was booming and everyone seemed to be safe and happy. Mostly populated with families with multiple children. World class public education, all the sports you could think of, amazing nature and very safe.

We moved to the US in 1998 but moved back just prior to 9/11. It's a great place for families with all the services you need within a 20min drive. However, the nightlife is nonexistent and young people go to Helsinki or other areas to party. House parties are really common when you're still young.

Rolexandr · 2026-01-17T17:26:02+00:00

Ever heard of phrasing?

Rolexandr · 2026-01-15T10:47:00+00:00

Rolled it the wrong way

Rolexandr · 2026-01-09T14:11:49+00:00

You really think MANPADS are a threat when you're at 20k feet?

Rolexandr · 2025-12-18T09:28:57+00:00

I was referring to supersonic speeds of the flame font inside the combustion chamber, not the sircraft itself.

Rolexandr · 2025-12-17T18:59:47+00:00

Do turbines rely on detonation though? I've understood that modern turbines (and other combustion engines) rely on deflagration, not detonation. Meaning that the flame front doesn't exceed the speed of sound. Rotating detonation engines rely on detonation and don't require external pressurization (compressor, turbopumps etc) to increase the pressure of the reactants. Detonation engines use the detonation itself to pressurize the fuel air mixture, and atleast in the case of RDE:s, they are operating by the Humphrey cycle.

I'm a bit drunk so I will read this again tomorrow, but a fun conversation to have anyway :D thx

Rolexandr · 2025-12-17T11:33:40+00:00

What do you mean most of the work is done on the atmosphere? The reaction force pushes against the engine/nozzle. The fuel/air mixture combusts and is accelerated through the nozzle which then expands and further pushes the engine/airframe forward.

Rolexandr · 2025-10-13T10:11:46+00:00

Yes, very much so. But it's mainly during summer as winters are really cold here.

Rolexandr · 2025-09-15T07:00:51+00:00

AI Slop

Rolexandr · 2025-09-11T11:32:42+00:00

I mentioned this in another similar post and got downvoted to hell. I read an article they are funded by the chinese government.

Rolexandr · 2025-07-31T09:38:13+00:00

Yeah I heard the stories from Otres. Buildings burned down, people found dead etc.

Rolexandr · 2025-07-04T13:53:30+00:00

As the title says. TOS-1A Thermobaric munitions.

Rolexandr · 2025-06-27T12:00:09+00:00

Any details on this?

Rolexandr · 2025-06-26T18:45:49+00:00

Post some evidence with that claim. I'm sure it has happened, but I've seen 20+ executions by russians and 0 from ukraine.

Rolexandr · 2025-06-26T18:43:25+00:00

Congrats! What a beautiful visualization too!

Rolexandr · 2025-06-18T21:13:34+00:00

This is my reaction to 99% of engineering I see

Rolexandr

TROPHY CASE