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mycatscrimes
Jan 2, 2020
A dude making a huge public deal out of asking you out is always a bit of a nightmare because you don't have to worry just about how he'll react if you say no, but how the audience he has created will react too. Some women are cool with it but if you don't know she is, it's a lot to spring on someone. And I think some dudes count on that extra pressure to force a yes. :/

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mycatscrimes
Jan 2, 2020

Nenonen posted:

Antique is maybe wrong term to use for software, it is better probably more comparable to ancient classics like Cicero or Plato. What types of data are going to survive from our time, and what kind of picture will they give of us to people 1000 years after us?

Yes I regularly compare my original Pokemon Yellow cartridge to Plato

mycatscrimes
Jan 2, 2020

Borscht posted:

Turns out the whole thing is a matter of perspective. Do you see an old woman or a young woman looking away?



They are called denticles because they are modified teeth, btw.
That's right, sharks have skin covered in teeny teeth.

mycatscrimes
Jan 2, 2020
Thermals make birds go higher and have to expend less energy, is that because bird flight is basically glide-propelled and doesn't rely on any rotating machinery like engines, etc?

I could see someone who understands how vultures and eagles conserve energy compared to other birds, but doesn't understand the physics, thinking it could apply to their drone.

mycatscrimes
Jan 2, 2020

Submarine Sandpaper posted:

Wings work because of a delta of pressure over surface area.

A fire reverses which side of the propeller has the positive pressure, you will see moths and the like get sucked into flames too.

I don't think altitude of flight for aircraft really matters at all in this instance. Cruising altitude is pretty high and I believe oxygen becomes the main constraint vs temp.

So how does it work for birds? Sorry I am physics-stupid but the commonly accepted explanation is that vultures can soar for so long because using rising air created by heat lets them attain great height with minimal flapping, conserving energy. Their wings are built to maximize glide and keep them aloft for a long time. The circling behavior they display is in fact their process of climbing- circling allows them to stay over the warm air while they rise. Other birds do this too, vultures are just the specialists who are most built to this mode of flight.

mycatscrimes
Jan 2, 2020
Thanks everyone, I feel like I understand better now!

nomad2020 posted:

Birds have hollow bones and are freakishly light for their size, and the upward thermal pressure literally pushes them (slightly). Gliders can pull this trick off too, they stopped recording 'longest glider flight' because if you're in a good spot for it you're only limited by how many days you can stay awake for.

Longest duration glider flight: 70+ hours over Hawaii
Longest distance glider flight: 3,000km over the Andes.

Helicopters and airplanes want cold, dry, and calm air for best performance.

The distinction between gliders and airplanes was particularly helpful. Airplanes seem to have large wings relative to their size if you are a layperson, but if you consider the weight they really don't? I know that's only a small piece of the puzzle, but it's something I was getting stuck on.

Like a soaring bird's wings are typically significantly more than 50% of their overall mass, that's not true for planes but it is for lightweight gliders?

mycatscrimes
Jan 2, 2020
That's pretty cool! Thank you for the link. : )

mycatscrimes
Jan 2, 2020
According to all known laws of aviation, there is no way a helicopter should be able to fly.

mycatscrimes
Jan 2, 2020

Inspector Gesicht posted:

It's difficult to tell if the courtroom artist either hated him, flattered him, or had a cramp in his hand.



Looks like the courtroom artist's mescaline was just starting to kick in. In picture two surely the face has fully detached from the head

mycatscrimes
Jan 2, 2020

A very real language.

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mycatscrimes
Jan 2, 2020

luchadornado posted:

I've seen cows idly watch a tornado pass by a few dozens meters away while getting conked on the head and body with baseball-sized hail. They live as tranquilo as possible.

That's just normal in the midwest

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