The h Bar

12:00 AM

Last night dream involves a time machine, where food is sent 5 minutes back into the past and then catch up with their present again via a relativistic boost, resulting in duplicates.

It may be possible that the simplest of the geodesic CTCs will not result in duplicates of an item to be visible all at once except at the edges of the loop (in a similar fashion as Tippett's warp drive time machine) as taking any space like slides, only a maximum of two instance of the object (going back to the past and going to the future) is going to fall onto it

But what if, one of the objects located in the past of another undergone a Lorentz boost. Can it potentially catch up with its present self and thus appearing in the same spacetime slide, and still remain self consistent...?

PranshuKhandal

2:16 AM

Hello everyone!!

I am new, I don't know how to start, but can anyone tell me what does ♦ means, after name of users?

Am I allowed to chat here?

danielunderwood

Those are mods. They have blue names here in chat

PranshuKhandal

What do they do?

@danielunderwood do they have some special powers?

or it something else

dmckee

3:08 AM

@PranshuKhandal Lots of special powers. Bhahahahahahaha! ::begins dry washing his hands::

Of course most of the time we have no cause to use them. Which is good. Very good. I don't want to level cities. Or even sulk in my tent. Really.

2

danielunderwood

Is sulking in a tent one of your many powers?

dmckee

Well, all the best, invulnerable, mythic heroes do it. Don't they?

danielunderwood

huh Google does seem to think that's the case

Clearly my culture knowledge is too low

dmckee

3:26 AM

It was attempt to reference The Illiad.

danielunderwood

Though speaking of cultures, quark is apparently a type of cheese that companies are trying to make into a yogurt-like substance

PranshuKhandal

@dmckee you also have it, how do you get that?

danielunderwood

I need to read more so I actually get references

PranshuKhandal

is it based on reputation?

danielunderwood

At least one way is to be elected. Though I don't really know when a site decides to have an election or what happens with a new site

dmckee

3:31 AM

@PranshuKhandal You get elected as moderator (or appointed as pro tem moderator) on any site (beta site) on the network. Or you work for Stack Exchange in the right role. All site moderators are also chat moderators.

PranshuKhandal

thank you friends

dmckee

There is no direct dependence on reputation, but most moderators have a non-trivial amount of rep for their site: it's one of the ways of getting well enough know to get elected.

danielunderwood

Are you guys moderators across all chat rooms or just the ones associated with the site you're a mod on?

dmckee

@danielunderwood All of chat. a fact that causes some friction from time to time.

PranshuKhandal

can you see the internal working of the site also?

like how it is made or something else like that

dmckee

3:35 AM

We don't have access to the raw code, or the raw data about user votes and the like.

We do have access to some tools which help us to determine which users might be misbehaveing in ways that are not visible on the surface.

On Stack Exchange sites most of the "moderation" is done by users ordinary users exercising powers that are linked to representation. The "diamond mods" are there to deal with unusually situations.

When things are going smoothly it takes very little time because there just isn't much to do.

When things are not going smoothly we spend a lot of time looking at user profiles and reading troublesome comment threads and discussing options among ourselves.

PranshuKhandal

may be i should not ask this, but are you paid for this?

dmckee

So there is usually consensus before we take any strong action.

@PranshuKhandal Only in warm fuzzy feelings. And I think I got a t-shirt and a couple of stickers, once.

PranshuKhandal

that's sounds superb

can you see the comments made by an user on their profile

dmckee

Even ordinary users can see the on-site comments of other users. Moderators can also see deleted comments (for a limited time in the user profile and forever if we look one post at a time).

PranshuKhandal

@dmckee thank you sir for the help

amanuel2

4:43 AM

I cant seem to understand Question 5C

Im so confused on how the friction is MbA and to the right

Zerix

@amanuel2 since the only force that can act on the lower block is friction and it is stated that they don't move relatively then it makes sense that friction acts towards right for it

@amanuel2 chat.stackexchange.com/rooms/54160/problem-solving-strategies

It would be better if you ask that in the problem solving room

amanuel2

@Zerix Isnt Netforce for the bottom block zero? Therefore the Friction is 0 since there is no other force?

dmckee

The bottom block is stationary with respect to the top block, but not with respect to the floor.

If the two blocks were glued to gether then it would be clear that the net force acting on the is to the right and they would accelerate.

Static friction at the block-block meeting surface is doing the job of the glue.

David Z

5:10 AM

@danielunderwood For well established sites, moderator elections are scheduled roughly whenever the existing mod team asks for them, or when one of the existing mods steps down. If the community thinks more mods are needed on a site, someone can make a meta post to start the conversation about getting an election scheduled.

John Rennie

6:14 AM

@Zober the Einstein-Rosen bridge appears in the maximally extended Schwarzschild black hole. However this is a mathematical structure that cannot exist in the real universe because it takes an infinite time to form and the universe isn't infinitely old. So none of the black holes we might observe will contain ER bridges.

user351417

6:38 AM

@Blue Neat, but you need a userscript to view that stuff when there haven't been any edits, which is kinda annoying. Better than nothing though.

user351417

27

Q: Now you can know if a question really hit the HNQ

I noticed this new addition. It is now stated in the revision history if a question has made it to the Hot Network Questions, example:

user351417

Party time!

user351417

(Though I see Emilio Pistanty got there first :P)

Slereah

7:40 AM

Oh look at @JohnRennie, knowing when the universe appeared!

He's that old

John Rennie

@Slereah I remember being massively disappointed when I realised that the maximally extended versions of the Schwarzschild and Reissner-Nordstrom metrics didn't actually exist.

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