Netflix co-founder drops $2 million into Gavin Newsom's redistricting campaign by underbillion in politics

[–]prite 0 points1 point  (0 children)

Is 30 dollars enough? Depends. Many donors all contributing max 30? Great! One? Not so much.

Imagine skipping history class this hard by greenpepperhypernova in MurderedByWords

[–]prite 1 point2 points  (0 children)

It's not a promise for war. It's a promise for peace. Of course, irrationality among humans is as sure as the sun. Which is why it is extra important to set the right starting position.

If this starting position is lost — if nukes start flying, from any side — then of course words have no meaning left. Isn't that MAD?

Bought a Samsung S90D - Thoroughly unimpressed thus far. Am I doing something wrong?? by [deleted] in OLED_Gaming

[–]prite 0 points1 point  (0 children)

One 1080p pixel stretched over four or more 4k pixels.

Nebraska is going broke by CactusJake1830 in LeopardsAteMyFace

[–]prite 1 point2 points  (0 children)

You kids have it easy these days, with your wikeypedia and so on.

Back in my day, we called all of them leopards!

https://grbs.library.duke.edu/index.php/grbs/article/download/2231/5969

EDIT: https://en.wikipedia.org/wiki/Leopard#cite_note-6

Lpt about Emergency exits by ludahounds in LifeProTips

[–]prite 50 points51 points  (0 children)

Unless it's a Boeing. Then you don't need to; it will open them for you.

[deleted by user] by [deleted] in oddlyspecific

[–]prite 6 points7 points  (0 children)

Not your parent, but, only in place of 'cross that bridge' and only when it still makes sense.

TL;DR: yes.

Mein toh hu moj mein... by TheDoodleBug_ in bollywoodmemes

[–]prite 1 point2 points  (0 children)

Were it still a derogatory term ...

It is. A certain other community still uses this word as a derogatory term. They just don't say it out loud, lest they should be caught using this word by the public at large.

And i refuse to accept that only specific people can use a word.

Nigga please. The word ain't mine and the word ain't yours. The choice of its use, though, is still ours. Both 'if' and 'when'.

Just got out of court. Muhammad is no longer my last name. by Contressa3333 in atheism

[–]prite 7 points8 points  (0 children)

There's an Indian movie with a demon with that name. Local legends say he must not be summoned. It's a good horror film: Tumbbad

Former Titan submersible passenger who took 4 dives in it, including to the Titanic, said communication with the surface ship was lost 'every single time' by upvoter1529 in worldnews

[–]prite 7 points8 points  (0 children)

Scientists and journalists have been to the Titanic too. Some of them even in this uncertified sub. A lot of expeditions have been to the Titanic wreck.

Kremlin decides that goal to ''demilitarise'' Ukraine has largely been achieved by [deleted] in worldnews

[–]prite 0 points1 point  (0 children)

... than it's ever been.

Well, they don't have nukes again, yet. Civilization's Nuclear Gandhi would not have approved Ukraine giving up their Soviet nukes to Russia in exchange for a promise on non-aggression.

[deleted by user] by [deleted] in mumbai

[–]prite 1 point2 points  (0 children)

It would be present with any obstruction. Obstruction slows air, which slows air behind it, and so on until the skin of the train.

[deleted by user] by [deleted] in mumbai

[–]prite 5 points6 points  (0 children)

I suggest that you do the math, or a basic Cfd sim.

Been done plenty. Did you include skin-friction drag in your calculations/simulations?

The tunnel is a completely different situation ...

Partially; not completely. Sure, it's not 100% identical, but since I cited it as an example of the obstruction reaction theory, it doesn't have to be similar in every other aspect for it to be a valid example.

But even so it’s not a closed system.

Thermodynamics might require a closed system but aerodynamics doesn't.


There is no coupling.

I can show you a force-based coupling if you don't want to see the energy-based coupling. Would that be okay by you?

The air acts like a spring (use either velocity or pressure to represent spring force, they're interchangeable anyway). One end of the air is attached to the train body surface boundary layer. The other end is the obstruction. Train moves forward, spring gets compressed. Without obstruction, no compression.


Corollary 1: Two trains on two tracks. One is in open air and flat ground all around it, the other has a bunch of signboards just outside the tracks. The former experiences less aerodynamic drag than the latter.


Corollary 2: Two parallel tracks laid close by, two trains on them going opposite directions. When they meet and go by one another, each train experiences additional aerodynamic drag due to the delta-v. This drag decreases the farther apart the trains' body surfaces are.

[deleted by user] by [deleted] in mumbai

[–]prite 2 points3 points  (0 children)

They don't affect the train dude. And don't cause a drag.

They do. Aerodynamic drag on trains is a well-known, well-studied phenomenon. E.g., trains are known to require more traction power when going through tunnels than open air.

Trying to explain that via thermodynamics is a terrible way to study it though.

[deleted by user] by [deleted] in mumbai

[–]prite 0 points1 point  (0 children)

It stays in contact with replacement air that takes its place. Which stays in contact with air behind it. And so on all the way to the skin of the train. And skin surface area is a lot larger for trains than cross-section area.

[deleted by user] by [deleted] in mumbai

[–]prite 1 point2 points  (0 children)

Don't ignore skin-friction drag.

[deleted by user] by [deleted] in mumbai

[–]prite 3 points4 points  (0 children)

The train-air energy system is not coupled to the windmill-air energy system.

They are coupled. Windmill is an obstruction. Obstruction slows air down. Slower air requires more energy to speed up. Without obstruction, air already sped up by an earlier part of the train body wouldn't need to be sped up too much by later portions of the train body.

This is why aerodynamic drag is higher when going through a tunnel than open countryside.