Recent comments in /f/explainlikeimfive

its-a-throw-away_ t1_j6at1y2 wrote

With women, after exiting the urethra urine passes between two broad folds of tissue which meet in a line. This creates turbulent flow.

For men, even if urine passes through a foreskin after leaving the urethra, the opening is narrow and roughly circular. Surface tension causes cohesive, sprialled, unturbulent flow.

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C_Skadi t1_j6ashc6 wrote

The crimp of the bottle cap engages with the lip of the bottle. This creates many points in contact with the bottle that can exert an equal and opposite force of the gas trying to escape. The cap is held in tension against the force applied by the pressure equally against the cap. The malleable cap will deform if torque is applied, freeing the contents to fill our glasses.

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ArctycDev t1_j6as8kt wrote

Someone did that bottle knock thing to me once at a bar, where they thunk the bottom of their bottle onto the top of yours. I have been waiting over a decade for that to happen again so I can put my thumb over the top and see if I can make it spray like a hose at whoever does it.

I think at this point I have to accept the fact that I no longer hang around that kind of immature crowd, and if I wanna test it, I'm going to have to run an experiment in a controlled environment. (read: buy two beers and do it myself.)

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its-a-throw-away_ t1_j6arxg8 wrote

Same as any other surgery. Depending on size and type of injury, surgeons may secure tendons with staples or sutures. Low blood supply in tendon tissue means healing takes an extraordinarily long time and often leaves the tendon weaker than before the injury.

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the_original_Retro t1_j6arqyu wrote

Home brewer here. It's chemistry.

When they put the cap on the beer bottle, they'd already forced a lot of carbon dioxide (the gas that you breathe out) into the liquid in that bottle. They did it by placing the bottle's contents under pressure. And, under pressure, chemistry turned that carbon dioxide gas into a weak and unstable chemical called "carbonic acid" that easily breaks down under stress.

If you were to open the top, and hit the bottle a sharp knock with another bottle, WHAM. That's stress. And the carbonic acid starts to turn back into carbon dioxide REALLY FAST, and you get a foaming up mess.

But it can only do that because it's no longer under pressure. The carbon dioxide needs to go away somewhere so there's room for more to form.

That's why if you leave the cap on, and the carbon dioxide might want to come out, but it really can't... because there's no space where it can go.

As long as the bottle remains sealed, any carbon dioxide that wants to form just increases the pressure in the bottle's little air-bubble headspace, and that increase in pressure just re-dissolves the carbon dioxide back into the water part of the beer.

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Beneficial-Car-3959 t1_j6arcg2 wrote

  1. Why do we need natural numbers?

Because we need to count things.

  1. Why do we need whole numbers?

We need number where we can show that someone owes something.

  1. Why do we need fractions?

Because we need a number to show how many parts od whole thing is taken/eaten.

  1. Why so we irrational numbers?

So we can calculate area of round things.

  1. Why do we need real numbers?

See 3rd and 4th answer.

  1. Why do we need lateral (imaginary) numbers?

Because we need it for our alternate current calculations.

If you like video idea than watch all the parts

https://youtube.com/watch?v=T647CGsuOVU

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ellipsis31 t1_j6ar0z5 wrote

It absolutely can and does create a seal strong enough to keep the gas contained. Note the inside of the bottle cap, it has a rubber gasket which is pressed against the lip of the bottle mouth to create a seal. Furthermore, this seal doesn't have to resist as much pressure as you might think, most of the carbon dioxide is dissolved in the liquid, the cap only has to contain the pressure in the small head space enough to shift the equilibrium toward dissolved CO2 over gaseous. Same as with soda bottles.

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jrhooo t1_j6aqz5o wrote

I used to always say, you might not know the diff drinking it, but you'll know the diff when you wake up in the morning.

Granted, looking back that's still biased, because, plot twist, when you're drinking the bottom of the barrel cheapest vodka on the shelf, you're probably college/military junior enlisted age, at some bar or house party, and all that sub cheap plastic bottle vodka you're drinking is also mixed with the cheapest sugar slush you can find too.

Was it the cheap vodka making you hung over? Or the red bull and raspberry blue slushie mix?

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jrhooo t1_j6aqjnd wrote

Grey Goose is "fine" but IMO its just "fine". Its the burger at a sit down restaurant. You know its floor will be pretty good. its a safe choice, but its not going to give you some high end "wow" experience.

Now, I won't say any of the following list is "high end" or special, but in terms of just drinkability, and hey I kind of enjoy this, I've liked

Ketel (for mixed drinks only)

Russian Standard (excellent value for money)

Imperia (russian standard's "premium" release, not sure if they still make it)

Stoli Elit (probably overhyped and very probably overpriced, but it is nice to drink)

Chopin (wheat only for me. The potato felt I guess "thick" in texture? I didn't like it so much)

Effen - very nice, drinkable, reasonably priced

Personal opinion on what I DON'T like, anything Scandinavian. Just never really found one I liked. Reyka was not bad, but but all the absolut, level, svedka... hard pass.

Hidden gem for you California folks,

Albertson's used to run a brand called "Origine" bit sure if its still around, but basically it was their in store brand of various alcohols. No idea who their supplier was, but IIRC each liquor under their label was just a small batch distillery offering. So their Origine vodka was just some micro distillery product out of France. It was nice.

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