Sasha

joined 9 months ago
[โ€“] [email protected] 3 points 7 hours ago

No idea if I can reply to a deleted comment but I read the root comment totally wrong and just restated everything they said. My bad.

[โ€“] [email protected] 7 points 7 hours ago

Almost none of this applies in the case of something like loop quantum gravity, which I understand very little of but I don't believe it's possible to discuss it using the language of QFT like I have above.

[โ€“] [email protected] 19 points 7 hours ago* (last edited 7 hours ago) (1 children)

I briefly worked in this area of physics, it's complicated and depends on your definition of a particle and which quantum gravity model you're talking about.

To simplify things you can just ask the same thing about non-quantum gravity. Why does gravity escape the black hole? The painfully mundane answer is that the black hole is gravity, it's not escaping itself. Gravitational waves can't be emitted from inside the black hole but that's because those are a form of radiation and not the structure of spacetime.

This is specifically important because even quantum gravity (the kind with gravitons) still has this distinction. Particles belong to a field and are excitations of it, the gravitational field itself is not made of those particles. The force associated with that field is mediated by gravitons, but what that really means is complicated and honestly possibly just the result of a cool mathematical trick. It also comes with a bunch of crazy behaviour where you have particles that can break the laws of physics by just kinda doing it so quickly that nature blinks and misses it.

The point is, the quantum gravitational field is enough for the black hole to do its job when objects come by, gravitons don't actually need to escape, though they are involved in complicated ways.

[โ€“] [email protected] 3 points 1 day ago

Ah right fair enough, I'm just talking about the situation in Australia

[โ€“] [email protected] 18 points 1 day ago (6 children)

The safety isn't about lane filtering so much as just intersections, but yeah it's a rubbish argument and any biker making it should shut the fuck up if they don't wear hi-vis on every ride

[โ€“] [email protected] 46 points 1 day ago (2 children)

This is honestly an entirely valid complaint. There are way too many motorcyclists who replace their mufflers with aftermarket ones that are illegally loud, in some cases loud enough to cause hearing damage to pedestrians.

[โ€“] [email protected] 4 points 2 days ago

Hard agree, unsubscribed from real engineering the moment I realised they made ads without ever declaring it. It's literally just propaganda at this point

[โ€“] [email protected] 6 points 4 days ago (1 children)

Have to agree, FnB is the #1 thing I've ever done. It's an amazing community building night, I've had nothing but good experiences.

[โ€“] [email protected] 4 points 5 days ago

I think I finally met the love of my life, I don't think I'd want to risk changing anything

[โ€“] [email protected] 6 points 5 days ago

I've had friends in hospital today because of the fucking pigs. Every damn time, they're defending the worst people on earth and assaulting the best

[โ€“] [email protected] 4 points 6 days ago

If you're looking for books, then it depends on what field you want to study. Generally just I'd search for recommended textbooks for that field and then I'd definitely buy it and wouldn't just download it from libgen.is

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Eupho Rule (lemmy.blahaj.zone)
 

I was in an antique store and I found the anime section

111
Mandorule (lemmy.blahaj.zone)
 

Bought a mandolin today and I can't put it down, I can't wait to write tons of pretty songs :3

44
Lyrics Rule (lemmy.blahaj.zone)
 

Big Thief - Mary

182
Invasion Day Rule (lemmy.blahaj.zone)
submitted 7 months ago* (last edited 7 months ago) by [email protected] to c/[email protected]
 

From the Narrm invasion day rally, we had an enormous turnout

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Adrianne Lenker Rule (lemmy.blahaj.zone)
 

Go listen to Big Thief!

 
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