The h Bar

3:39 AM

Hi everyone.

I sometimes see a question marked as a duplicate of more than one question. Does it only happen when different people vote a question to be closed as a duplicate of two different questions or can I cast a single vote to mark it as a dupe of two different questions?

This should be somewhere in the documentation but I couldn't find anything on a quick search.

a perspicaciously curious mind

4:14 AM

@Thormund you could load up the pages in a separate room and then invite him there

chat.stackexchange.com/faq#retention

stackoverflow.com/help/privileges/chat-rooms

John Rennie

5:39 AM

@DvijD.C. moderators and gold badge holders can edit the duplicate list and manually add extra duplicates.

Dvij D.C.

5:57 AM

@JohnRennie Ah, I see. QMechanic was done with the job I had in mind by the time I finished sending the message here ;)

vin

12:06 PM

hi, I am suddenly stuck with a rather basic question that's making me feel stupid. Hope someone can help me with. Q: how would a body end up having uniform velocity? Is it a real thing or just a convenient assumption made to model the world?

Captain Bohemian

@vin do you refer to a free-fall body?

John Rennie

2:22 PM

@vin hi :-) What do you mean by uniform velocity? Do you mean constant velocity?

Captain Bohemian

3:01 PM

@JohnRennie hello, can you now answer me the question I asked you last time? That is, I observe that $r=r_s$ is just the origin of the Kruskal–Szekeres diagram (being 2-dimensional) at whatever finite t value but becomes $T=\pm X$ (being 3-dimensional) when $t=\pm \infty$. Is this a factual demonstration or also a result of the nonlinear map from the Schwarzschild coordinates to Kruskal coordinates?

user434058

4:59 PM

@rob Thanks for the edit :-)

JingleBells

5:26 PM

Can double-sided tape catch fire?

ACuriousMind

only one way to find out

JingleBells

:|

PM 2Ring

@FakeMod Just in case you didn't know, the status-review tag now gives mods the ability to escalate feature requests for staff attention. See meta.stackexchange.com/q/345032/334566 and the various linked MSE posts for further details.

JingleBells

I'm trying to fix the bent glass on my 3d printer with double sided tape and the bed heats up to 60 degrees celsius

i know i shouldn't trust random guys on the internet

c'mon acuriusmind, u my boy, tell me pliz

PM 2Ring

@JingleBells Apart from the fire risk, the glue may go runny at that temperature, so the tape might not hold. Is it a plastic tape, or cloth-based?

Charlie

5:30 PM

I'm not an expert on materials but tape doesn't scream highly flammable to me

user434058

@PM2Ring Yup, I saw the featured main Meta post.

Charlie

Especially not at 60 Celsius. As PM2Ring has said the glue might be a problem

PM 2Ring

I recommend Teflon tape, which can easily handle such temperatures. It's not sticky, but it's stretchy. Plumbers use it to make threaded pipe joins leakproof, both for water pipes and gas pipes.

JingleBells

pff I'll just leave the glass bent and print the thingy and order a cut mirror glass from a local store (that's hopefully flat enough)

I shouldn't trust random guys on the net and I don't have a second house.

Charlie

The plastic in the tape may melt depending on what it's made of but it would surprise me if it literally caught fire at 60C

But yes if you really don't want to risk it it's probably better to be safe than without a house

JingleBells

5:33 PM

Yes, I'll just get a mirror glass cut like most people do

Charlie

Maybe print yourself a back up house then do it

:P

JingleBells

:OOOO

user434058

:P

JingleBells

I'll print a 3d printer

:OOOOOOOOOOOOOOOO

Charlie

Why stop at 3D

JingleBells

5:33 PM

and then print a bigger printer :OOOOOOOOOOOOOOOOOOOOOO

@Charlie :K

user434058

@JingleBells what does this mean?

JingleBells

@FakeMod no idea but it expresses my reaction towards 4D printers

btw I'm no longer 17

i can go to jail now yay

ACuriousMind

@JingleBells ohhh, a 3d printer printer

external-preview.redd.it/…

JingleBells

I'll be printing planets in a few months

Charlie

You could use your 4D printer to make a real life version of that annoying thing they do in movies with a piece of paper to demonstrate what a wormhole is

PM 2Ring

5:37 PM

Self-replicating 3D printers is an old idea. See reprap.org/wiki/RepRap Of course, it's not (currently) practical for a 3D printer to be able to reproduce all its components.

user434058

:Œ

JingleBells

:%

::@

^ aliens

user434058

A bit more realistic :-P ---> :-Ƿ

Charlie

This is getting out of hand

user434058

Wait for ACM to delete all tis.

JingleBells

5:39 PM

ye

where u at me boy acm

user434058

Even more realistic: :-Ϸ

JingleBells

|>

user434058

Or maybe not

JingleBells

^ robocop

i'll be releasing my new product in a month, who wanna pre-order?

$111 a pop

user434058

After eating blackcurrant: :-⁋

JingleBells

5:42 PM

but i'm serious tho, i'm turning 18 today so I can finally start my own businesses legally

PM 2Ring

@JingleBells Happy Birthday!

ACuriousMind

well, happy spawnday!

JingleBells

thank u me boys

it doesn't feel any different than 17

user434058

When you are in an 8-bit game: :-▛

JingleBells

lol

ACuriousMind

5:44 PM

it never does

adulthood is a sham

JingleBells

sham?

depends on what u do with it

user434058

@JingleBells Yo! Happy birthday man!

JingleBells

thx me boy

gotta go, cya l8ter aligatar

user434058

A "Tongue-Sticking" Saga: :-P :-Ƿ :-Ϸ :-⁋ :-▛

user434058

@ACuriousMind That's so punny.

ACuriousMind

5:53 PM

it is?

The pun must be so bad I don't even know I made it!

user434058

@ACuriousMind nvm. I wanted to make a pun so I did. (Well you could add an extra e at the end and it would still be somewhat true)

Charlie

When we "choose a coordinate system" in which the connection coefficients locally vanish, we're just moving into a frame that is in free fall right?

That would make sense to me, my lecture notes are a little confusing

ACuriousMind

yes

Charlie

Ty :)

user434058

@ACuriousMind Is there any difference: ẞ and ß?

ACuriousMind

6:01 PM

Sure, you used two different fonts :P

Captain Bohemian

Sylvester's law of inertia states that the signature of a real quadratic form $A$ is an invariant of $A$. But the eigenvalues of $A$ are not an invariant of $A$?

user434058

@ACuriousMind No, I mean the caps lock was turned on when I typed the first one, and off when I typed the second (I am using a tab). So is it just a different font, or are they a capitalised and a normal character?

Captain Bohemian

I think the eigenvalues of $A$ should depend on the basis chosen, right?

Faded Giant

Capital ẞ

Capital sharp S (ẞ; German: großes Eszett) is the majuscule (uppercase) form of the eszett (also called scharfes S, 'sharp s') ligature in German orthography (ß). German eszett is, in origin, a ligature of two minuscule (lowercase) letters, long s and tailed z, and as such has no traditional majuscule form. Nevertheless, typefaces used for printing German language texts during the early 20th century often included capital eszett glyphs. There were repeated calls to include capital eszett in official German orthography, particularly in the early 20th century, and again during the 1950s and 1960s...

ACuriousMind

@FakeMod The existence of the capital ß is very recent so I didn't recognize it, but it appears the first one is indeed capital

user434058

6:07 PM

Oh, @FadedGiant @ACuriousMind thanks, now it makes sense.

user434058

@FadedGiant BTW, you might want to update your network profile.

PM 2Ring

6:19 PM

While we're on the topic of German orthography, see en.wikipedia.org/wiki/Blackletter#Germany

PM 2Ring

6:46 PM