@Slereah Misner Thorne Wheeler

@Semiclassical DW, BBC, CNN, WSJ usually manipulate the news to such extent that it becomes a comic.

They try to mindwash people about eastern and central countries,

#JantaCurfew Challange

"No pressure, but Isaac Newton discovered gravity while he was self-quarantined during the plague in the 1600s. Oh, and calculus too."

Coronavirus Conference postponed due to Coronavirus

Imagine something that is a field of not just fine structure, but all coupling constants

Everything from the mixing angle of neutrinos, to the fine structure constant, to gravitational strength constant, to theta that controls the strong CP violation

The metaphysical exploration on what unifies light and darkness in spirituality, plus some extrapolation, surprisingly lead me back to physics

But, must the unified force in the theory of everything has a coupling constant?

A Guide to Coronavirus-Related Words

@JohanLiebert XD This is so original

@NovaliumCompany yeah! I found it in the chemistry chat room :-)

How did penguins arrive in the North Atlantic?

The same way Superman arrived on Earth

@Loong they were there for some tour!

Though those penguins could have saved their lives if only they knew how to swim!

November 16, 1968. "In the opinion of the eight virologists these viruses are members of a previously unrecognized group which they suggest should be called the coronaviruses"

NOTE: The word was introduced by a group of virologists as a short article "Coronaviruses" in the "News and Views" section of Nature (vol. 220, no. 5168, November 16, 1968, p. 650): "…avian infectious bronchitis virus has a characteristic electron microscopic appearance resembling, but distinct from, that of myxoviruses. Particles are more or less rounded in profile…there is also a characteristic 'fringe' of projections 200 Å long, which are rounded or petal shaped, rather than sharp or pointed, as in the myxoviruses. This appearance, recalling the solar corona, is shared by mouse hepatitis virus….In the opinion of the eight virologists these viruses are members of a previously unrecognized group which they suggest should be called the coronaviruses, to recall the characteristic appearance by which these viruses are identified in the electron microscope."

I got scammed on Freelancer. I feel so bad. I can get through this tho. #nevergiveup

I like this kind of reporting.

Looks like I'm gonna be overseas for an indefinite amount of time. Welp, here's to learning a foreign language XD

@dsm Which one?

@JohanLiebert I don't see China?

are they off the graph?

@skullpatrol I think so, for example Germany too isn't there.

@skullpatrol worldometers.info/coronavirus/covid-19-testing

right, thanks for sharing pal

@JohanLiebert No, that doesn't make sense - according to their own data Germany should be below and to the right of South Korea, but to the left of Italy.

I.e. there are countries missing, but not because they didn't fit on the graph

Missing data creates panic :-/

What?

The data is on their site, just not in the graph

@ACuriousMind yes you are right (I didn't look at it that much carefully!)

The countries which are closer to the left part of the graph are better-off?

Well, they have fewer cases. I don't think this directly translates to "they're doing better", they can also simply be in earlier stages

(or they don't test enough to see more cases)

I'm not sure this graph really conveys any useful information :P

@ACuriousMind Riddle me this

we're dealing with changing and incomplete data @JohanLiebert

if $q$ and $r$ are in the normal neighbourhood of $p$, is $q$ in the normal neighbourhood of $r$

No reason that it would, but I also can't think of a counterexample

Well

convex normal neighbourhood

I can think of counterexamples if it's not convex

@Slereah Unfortunately I don't really know anything about normal neighbourhoods

Do you know about abnormal neighbourhoods

I live in one

Are you next to the Addams family

@Slereah Yeah, but I haven't seen them in a while since they're self-isolating

@ACuriousMind You'd think they'd be out and about

They love epidemics!

Zombies are like that

@Slereah Apparently, and I quote, "Some sort of supercharged flu is not really our style"

I left when they started reminiscing about the plague shortly afterwards

Source please.

@ACuriousMind 1918?

Trying to show that geodesic triangles can define geodesically convex neighbourhood bc that would help me a fair bit

This is so silent over here. I can only hear chapping of birds and squirrels. No sound of motorcycles, etc.

> Based on phylogeny, taxonomy and established practice, the CSG recognizes this virus as forming a sister clade to the prototype human and bat severe acute respiratory syndrome coronaviruses (SARS-CoVs) of the species Severe acute respiratory syndrome-related coronavirus, and designates it as SARS-CoV-2.

Wikipedia ref

Hm

If a spacetime admits no naked singularities

Can any two points be connected by a geodesic

I guess not

@Slereah Can you do that on the Clifton-Pohl torus?

No need for anything so fancy

There's a trivial example

@ACuriousMind Vietnam, a decent place to be at the moment. They've been vigilant from the beginning, and there's only 77 active cases (a decent amount, unfortunately, originating from a flight coming from London)

with the Minkowski metric

No geodesic between $p$ and $q$

Ah, sure, if you allow boundaries then it's easy

I guess it's also easy if you don't specify "compact"

Apparently there aren't a lot of theorems regarding convexity of spacetimes

Outside of the one for globally hyperbolic ones

What would be a sure-fire manifold that is convex

This example is globally hyperbolic

I guess I need to throw in maximally extended, maybe

Apparently there is a theorem for that, but you also need a ton of conditions

It's not quite as catchy as "Globally hyperbolic manifolds are convex"

#JantaCurfew turned out to be a complete failure (at least in my city). People are gathering on the streets and everything is going on in party style (crackers, DJ, etc.). It seems to be much like Welcome Mr. Corona.

God dammit :V

@ACuriousMind I did mean spacetile

I'm looking to retile my bathroom

and it needs to be geodesically complete

Hm, black hole tiles would be useful there

You don't want to step on the singular tile

I can imagine someone putting their phone in the Pringles container: "Did I catch any Pokemon yet??"

"(I know there's GPS faking software, but I'd prefer not to use it, because it might be detected and my account banned.)"

Also anything messing with GPS or cellphone signals is supes illegal :p

How might he spin the poke-stops?

@PM2Ring Cantenna catch Pokemon. Ammiright?

For some reason, I am now pondering canned pokemon meat. Thank you for this disturbing imagery, brain.

@AaronStevens much like: " Oh! Gotcha Cantenna."

@JohanLiebert successful here, not seen any single person out of home and only thing I heard since morning is my own footsteps and fans...

@AaronStevens XD

@Slereah oh my god!

@PM2Ring A wild Cantenna appeared!

Now my city is under lock down (with only 1 positive case). Thank God!

This guy seems to know his stuff. physics.stackexchange.com/a/537709/123208 I had a brief look at the start of his paper linked at the end of that answer, Mathematical Implications of Relationism. It looks interesting, but I don't have the skills to evaluate it. True, it's not exactly mainstream, but it doesn't feel like the work of a crackpot.

@PM2Ring It is on academia.edu, which is certainly a demerit

One step above vixra

Ah, ok.

His post seems fine, though

He's scored 1260 points in 16 days. If he keeps this up, he'll hit 10k in a couple of months.

mathworld.wolfram.com/ASSTheorem.html

@Slereah Also see en.wikipedia.org/wiki/Pons_asinorum

YEAH

Enjoy the comment section of this video!