[a / b / c / d / e / f / g / gif / h / hr / k / m / o / p / r / s / t / u / v / vg / vm / vmg / vr / vrpg / vst / w / wg] [i / ic] [r9k / s4s / vip] [cm / hm / lgbt / y] [3 / aco / adv / an / bant / biz / cgl / ck / co / diy / fa / fit / gd / hc / his / int / jp / lit / mlp / mu / n / news / out / po / pol / pw / qst / sci / soc / sp / tg / toy / trv / tv / vp / vt / wsg / wsr / x / xs] [Settings] [Search] [Mobile] [Home]
Board
Settings Mobile Home
/pol/ - Politically Incorrect


Thread archived.
You cannot reply anymore.


[Advertise on 4chan]


File: IMG_6988.jpg (3.15 MB, 3024x4032)
3.15 MB
3.15 MB JPG
https://archive.4plebs.org/pol/thread/532250195
major cities are "vents" or "air intakes" and #3 in picrel is where patrol vehicles would have gone
>>
>>532256007
Looks sketchy
>>
>>532256007
take your antipsychotics
>>
You are making the rest of us look bad
>>
>>532256424
checks out
>>
>>532256460
https://www.researchgate.net/figure/Block-model-of-geological-formations-that-represent-a-geothermal-reservoir-from-Energy_fig1_265644065
>>
>>532256901
https://www.researchgate.net/figure/Cross-sectional-view-AA-across-the-Western-Canada-Sedimentary-Basin-in-Alberta-White_fig2_265644065
>>
File: IMG_3783.jpg (189 KB, 1022x1024)
189 KB
189 KB JPG
>>532256460
You want this man to take jew mind poison.
>>532256554
You think you look good?

Believe all schizos.
The burden of proof is on the state.
>>
File: 1717304198779389.jpg (146 KB, 1024x679)
146 KB
146 KB JPG
go on
>>
>>532258782
look into petrobras' actual scientific and geological or energy related expenditures and ignore financial prospects whereas for the air flow pretext to cities try to read some metro infrastructure designs with the idea metros would have been gigantic wind tunnels
>>
>>532259465
Metros function as massive, unintentional wind tunnels due to the "piston effect," where trains push air ahead and pull it behind within confined tunnels, forcing air into stations through stairs and vents. This creates high-velocity winds similar to artificial tunnels used for aerodynamic testing, which can be over 50 feet in diameter.
Why Metros Act as Wind Tunnels

The Piston Effect: Trains act as pistons within the tunnel structure. As they move at high speeds, they push a large volume of air in front of them, forcing it out onto platforms.
Suction & Airflow: Behind the train, a low-pressure area forms, pulling air into the tunnel.
Complex Geometry: Multiple tunnels, intersecting lines, and station layouts, such as escalators and vents, create pathways for this air to move.
Pressure Differences: Thermodynamic principles apply, where temperature differences between the cool, dense air in the subway and warmer surface air can create significant airflow.

Comparison to Actual Wind Tunnels

Size: Modern subway tunnels can span over 50 feet in diameter.
Wind Speed: While not designed for testing, the air movement caused by trains can produce high wind speeds on platforms.
Purpose: Unlike purpose-built wind tunnels that can create winds up to 250 km/h for testing, subway wind is a byproduct of high-speed train operation.

Other large-scale, man-made structures, like modern automotive or aeronautical wind tunnels, can feature fans over 40 feet in diameter and 6800 horsepower to simulate aerodynamic conditions. However, for daily commuters, the metro operates as a giant, functional wind tunnel.

todays' daily civilian infrastructure is tommorow's large scale life support.
>>
>>532256007
>>
>>532260497
>>
File: 1775199367644840.png (2.94 MB, 1024x1536)
2.94 MB
2.94 MB PNG
>>532260802
>>
File: 1747018565807265.gif (149 KB, 236x260)
149 KB
149 KB GIF
>>532256007
Listen to your parents and take your medication, anon.
It will help.
>>
I've read your post and still don't understand a single fucking thing about what you're trying to say.

Please explain it in simple language WITHOUT USING A LLM. Thank you.
>>
>>532256424
stop culturally appropriating our jokes nordjudencuck
>>
>>532260802
it's a cool concept but i'd imply a fall of current civilization.



[Advertise on 4chan]

Delete Post: [File Only] Style:
[Disable Mobile View / Use Desktop Site]

[Enable Mobile View / Use Mobile Site]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.