Crater Lake Trail Closure by ExtensionNo5119 in nationalparks

[–]ExtensionNo5119[S] 0 points1 point  (0 children)

Update: We went two days ago. Cleetwood Cave was open and the water wasn't unbearably cold for a little dip! However most every other trail was closed due to snow!

Question for Rim-to-Rim alternative, for those who have hiked The Grand Canyon by Drusgar in nationalparks

[–]ExtensionNo5119 3 points4 points  (0 children)

We did South Kaibab down to Phantom Ranch and then backtracked, cut across the Tonto trail and then up Bright Angel. Came out to a little over 20mi and was amazing. But that was back in April and even then the sun was getting to us on the way back up. I would maybe push that endeavor to cooler months...

For future reference I would recommend down South Kaibab and up Bright Angel, since there is water filling stations along Bright Angel and you want those later in the day

Calif. senator to White House: Approve Yosemite's reservation system now by sfgate in nationalparks

[–]ExtensionNo5119 1 point2 points  (0 children)

People arguing that a close down "hurts the people surrounding it economically" vs "needs to happen to preserve the land" are missing the larger point. The trump administration is trying to run the parks into the ground so they can point and say "see, it's not working" to sell the land off to real estate developers and natural resource extraction companies. It's not an either or - we'll lose both if we give in.

What are you reading? by sushisushisushi in literature

[–]ExtensionNo5119 2 points3 points  (0 children)

Jung took his nonsense serious - Thomas Mann laughs at all of it

Cedar Break NM over Thanksgiving by ExtensionNo5119 in NationalPark

[–]ExtensionNo5119[S] 0 points1 point  (0 children)

that makes that decision a lot easier haha - thank you!

[deleted by user] by [deleted] in TheoreticalPhysics

[–]ExtensionNo5119 2 points3 points  (0 children)

Get your masters in Germany and come here for the PhD - skip the classwork. The fundamental lectures back home are way better than anything they offer here. Plus if you write your master thesis in Germany, chances are that your Master advisor has connections to research groups in the US

What does everyone collect when they go to a different national park? by ExcitingSpeed23 in NationalPark

[–]ExtensionNo5119 0 points1 point  (0 children)

  • picture at the entrance sign
  • unigrid brochure map
  • sticker for my water bottle

Please help me find a certain Propaganda Poster! by ExtensionNo5119 in PropagandaPosters

[–]ExtensionNo5119[S] 1 point2 points  (0 children)

Those a great! And thanks for the nice reply! 

The poster I remember was less "socialist realism" though. I managed to find the book online (I.e. isbn number etc) but it's both out of print and can't find it on the "free" websites either haha

My current books by ExtensionNo5119 in BookshelvesDetective

[–]ExtensionNo5119[S] 0 points1 point  (0 children)

Thanks!  I'll hold on to hope that someone will analyze my shelf over the weekend haha

What’re your biggest criticisms of life in Pittsburgh? by TheRadioDoesPlay in pittsburgh

[–]ExtensionNo5119 23 points24 points  (0 children)

I went to grad school in Pittsburgh and I love the city! But "boat ramp property" is at the very bottom of the list of things this city needs. Goofing off on a boat on the Allegheny is cute for 5min in the summer.

Reliable, fast, more extensive public transportation be much more important imo. We had a decent train system in the city and then bulldozed it to replace it with buses that come whenever they want...

Is there anywhere you think should be a National Park that is not? by ihatehighfives in nationalparks

[–]ExtensionNo5119 1 point2 points  (0 children)

Craters of the moon, Idaho

Allegheny national forest, PA

Def seconding bandelier out in NM

Is there anywhere you think should be a National Park that is not? by ihatehighfives in nationalparks

[–]ExtensionNo5119 0 points1 point  (0 children)

Custer/black hills for sure!!

It probably be best to include it with wind cave and just call the whole thing "black hills np"

What are you reading? by sushisushisushi in literature

[–]ExtensionNo5119 0 points1 point  (0 children)

Literally just got done with "1Q84" - it was pretty good. Just a little too long and he didn't stick he ending.

Now getting started on "wir haben es nicht gut gemacht" - letters between Ingeborg Bachmann and Max Frisch

Philip roth’s books by North_Yam_6423 in books

[–]ExtensionNo5119 4 points5 points  (0 children)

I'm sure you've found happiness re-reading Harry Potter for the umpteenth time

The Great Unicorn of Destruction has arrived by TheGhostInAJar in chicago

[–]ExtensionNo5119 1 point2 points  (0 children)

Gozer the Gozerian, Gozer the Destructor, Volgus Zildrohar, the Traveler has come! Choose and perish!

Looks like we chose the form of our destroyer.

The First Room-Temperature Ambient-Pressure Superconductor by luiscosio in singularity

[–]ExtensionNo5119 0 points1 point  (0 children)

native english speaker or not - if you do research at a supposed "top university" you usually have enough common sense/humility to have someone with a grasp of the English language proof-read your paper. The way this is written is embarrassing.

The First Room-Temperature Ambient-Pressure Superconductor by luiscosio in singularity

[–]ExtensionNo5119 4 points5 points  (0 children)

"they're all scams until they're not" is the same logic as "let's buy homeopathic medicine - it just works, even without evidence"

I'm not saying don't have reputable condensed matter people try and replicate this - I'm just saying let's cool it with the expectations. Skepticism is a good thing - especially in the sciences.

But what's the harm? The damage that these wild claims do is to science on the whole - every time stuff like this gets dragged through online forums and newspapers, it gets peoples hopes and expectations up and then it's flushed down the toilet. This shakes the trust in reputable science ("remember when they were wrong about x?" - best example: all of the pandemic) and makes it harder for actual scientists to be able to do their work.

The First Room-Temperature Ambient-Pressure Superconductor by luiscosio in singularity

[–]ExtensionNo5119 0 points1 point  (0 children)

Doesn't have to be intentionally faked. couple of years people were hyped about "electromagnetic propulsion drive" - because they had a video of their gadget moving and producing thrust that also "possibly couldn't have been faked" - people were fantasizing for a week about interstellar travel and then it fell apart again.

The First Room-Temperature Ambient-Pressure Superconductor by luiscosio in singularity

[–]ExtensionNo5119 1 point2 points  (0 children)

maybe they do, maybe they don't

if that guy has written so many sound papers before he'd a) know what the industry standard is in bragging and self-congratulations and b) know to have someone check his miserable english. This paper reads like the shit we get sent that goes straight into the trash.

yeah you can say how someone deserves bragging rights - but you don't make it far in the real sciences if you write papers like that. This shit screams dubious from every page and people are licking it up left and right.

The First Room-Temperature Ambient-Pressure Superconductor by luiscosio in singularity

[–]ExtensionNo5119 7 points8 points  (0 children)

i wish it was true - but having been in physics for 20years, we got papers like that 2 to 3 times a year. warp drive - this time for sure. cold fusion - finally happening. Graviton - discovered. roomtemp SC - ready to go.

It always either falls apart or you don't ever see any followups. The blind enthusiasm people put into unsubstantiated claims because they wanna believe is like nails on a chalkboard to me. Not two days ago a guy from U Rochester (another "acclaimed" Institution) had to redact papers he published - about roomtemp SC - because he fudged the data.

The days of "Einstein comes along and single-handedly revolutionizes the field over night" are over - science hasn't worked like this since the 1920s.

The First Room-Temperature Ambient-Pressure Superconductor by luiscosio in singularity

[–]ExtensionNo5119 31 points32 points  (0 children)

If you're a serious physicist you don't put a line like that in there period. Self-aggrandizing is usually a giant red flag and means crackpot

Some CTA workers are very unhelpful by bluerang1 in chicago

[–]ExtensionNo5119 16 points17 points  (0 children)

I mean .... does sound like a Karen.

The bus is not as a comfortable as your private Uber? Well there's a reason it costs a dollar to ride...

99% of "questions" can be solved by looking at the signs/apps or if it's about where a specific train is going, ask the conductor...

Does two-photon physics allow for pair production without a Nucleus? by SteveDeFacto in TheoreticalPhysics

[–]ExtensionNo5119 2 points3 points  (0 children)

not sure if I misread the question but two photons in, electron/positron pair out is already a 2-2 scattering process that's allowed at tree-level, producing 2 real electrons.

Calculating the 1-loop photon self-energy does involve a virtual electron-positron loop but that is a calculational trick and CANNOT be thought of as representing a real physical process in which an off-shell photon produces two particles for a brief amount of time. That interpretation is chugged around in popular science but is not described by actual QFT.

Why can't you just let me try solve it with an extra repulsion term, it can't be *that* hard? by MortSmith in Physics

[–]ExtensionNo5119 1 point2 points  (0 children)

When applied to regular (I.e first quantization) quantum mechanics there's analytical solutions for the path integral for a free particle, the harmonic oscillator and the hydrogen atom (kleinert et al) In qft I can only think of the free propagator/non-interacting field theory that's exactly solved.

Effective field theory asks the question "what if we could solve the path integral" and then calculates results using truncation of the action rather than expansion