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FAQ for Physics Stack Exchange

Frequently Asked Questions This thread is an index of Frequently Asked Questions, and other resources, for Physics Stack Exchange. General questions about Stack Exchange For general questions about ...
6 votes
0 answers
106 views

Apparently incomplete support of mhchem on Physics

$\require{mhchem}$ Inspired by a question on chemistry.se (now closed, because it was a cross post from Phys.SE), I observe the mhchem extension can be used here provided the question/answer contains ...
Buttonwood's user avatar
6 votes
0 answers
76 views

What if we clean several shopping questions..?

Today, I accidentally went through the questions under telescopes tag and all questions confused me totally. Looks like, there are many questions that seem to me like off-topic. I've listed several ...
Waffle's Crazy Peanut's user avatar
5 votes
0 answers
82 views

Problem in viewing MathJax formatted writing in smartphone

I access this site using Chrome from myou smartphone. Recently, the MathJax formatted writings appear overlapped, for example in the following answer: What could be the reason for this? Update: ...
Wrichik Basu's user avatar
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4 votes
0 answers
365 views

Why does the font size appear different for this question?

I saw a question on the Newest Questions page (the 3rd question in the image below) whose title and body were rendered in a smaller font compared to other questions. Here : https://i.stack.imgur.com/...
user avatar
4 votes
0 answers
68 views

Opera browser blocks log in Physics Stack Exchange - HSTS issue

I have difficulties to log in the Physics Stack Exchange site via the Opera browser. It says: Your connection is not private This server could not prove that it is physics.stackexchange.com; its ...
ann marie cœur's user avatar
4 votes
0 answers
100 views

What should I flag as duplicate? New question or old question?

Someone asked this question: Why linear displacement is length of the arc? which is similar to this question: Confused about linear displacement in circular motion. The second question has been ...
ACB's user avatar
  • 2,578
4 votes
0 answers
65 views

Why are my upvotes displaced?

I wanted to upvote this answer and so I did. However, half an hour later the upvote was registered to this answer. I upvoted the intended answer again. Then this appeared, suggesting I upvoted yet ...
Řídící's user avatar
  • 6,705
3 votes
0 answers
78 views

How do you trace posts from inactive members?

I read an interesting post by post by user # xyxy. I tried to reach other posts by the same author, searching by user:xyxy, but I didn't get any returns, since the account has been deleted. Is it ...
user157860's user avatar
3 votes
0 answers
130 views

User name disappeared

Consider: Until yesterday, my username was visible in this circle. But now it does not seem to be there. So I have to search my name under the 'users' section to go to my profile. Am I the only one ...
ACB's user avatar
  • 2,578
3 votes
0 answers
81 views

Please reopen my question about a physical limit

I asked this question about what it is (if anything) that provides and upper limit to the speed of a turbine in a fluid stream: Maximum rotation rate of a turbine in a fluid with a given speed It was ...
Inductiveload's user avatar
3 votes
0 answers
99 views

Can't logout from Stack Exchange

I am unable to log out from Stack Exchange in my browser, in both PC and mobile. After logging out, when I open the site again it appears as I am already logged in. I have not enabled the remembering ...
fahd's user avatar
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3 votes
0 answers
98 views

How does a simple question get put hold for being unclear?

https://physics.stackexchange.com/questions/277688/space-elevator-solved I don't understand what is unclear about this question?
Muze's user avatar
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3 votes
0 answers
59 views

Views for a question

If a person opens a particular question more than once, are the views incremented just once or multiple times?
hybrid1999's user avatar
3 votes
0 answers
58 views

What does the question count include?

At the time of writing this there where 64,202 questions according to the figure given on the questions-newest tab. What does this number represent, is it the total number of questions on the website, ...
Quantum spaghettification's user avatar
3 votes
0 answers
111 views

What happens after death?

What will happen with my SE account after my death? Is there something that eg. warn foture users not to try contact with me, because I'm dead? Would my account be deleted for preserving servers ...
user46147's user avatar
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3 votes
0 answers
40 views

Can not find edit request that I had skipped

I "skipped" a proposed edit in the review on https://physics.stackexchange.com/a/107909/42975 because I was editing myself quite a lot. Now, I want to manually apply the useful fixes from it, but can ...
Volker Siegel's user avatar
3 votes
0 answers
32 views

Does anybody experience freezing and chrashing of browser while on SE?

I'm using Chrome (Version 29.0.1547.76 m), and lately whether I'm on physics.stackexchange, or on mathematica.stackexchange, when I'm writing a long question, usually with a lot of equations in latex, ...
dingo_d's user avatar
  • 1,833
3 votes
0 answers
59 views

Editing tags not allowed because not 6 characters?

I was trying to edit the post "Big Bang Anybody?" by adding a popular-science tag to it.. While until now, even if I didn't edit the body of the post, I could still edit the tags. However, it seems ...
Abhimanyu Pallavi Sudhir's user avatar
3 votes
0 answers
64 views

Edit Suggestion disappeared

An hour or so ago I suggested an edit for this question about heat-conductance in diamonds. When I now browse to said question, I don’t see the block ‘your edit is being reviewed’ anymore, nor does it ...
Claudius's user avatar
  • 2,307
2 votes
0 answers
46 views

Is there a way to search for downvoted or negative questions to answer?

Questions with negative votes are generally not displayed at the top and are sometimes hidden. Is there a way to specifically look up for negative voted or inactive questions on the site? The ...
Aurelius's user avatar
  • 119
2 votes
0 answers
58 views

Are questions front-paged for unspecified reasons perhaps related to popularization of a site?

Can a question be "front paged" by staffers for reasons that are not closely related either to significant developments in physics or to edits (either to the question itself or to the ...
Edouard's user avatar
  • 830
2 votes
0 answers
99 views

How can I start a conversation with a specific user (in chat or otherwise)?

Say I provided an answer to a question, and then another user commented on my answer pointing out some mistakes. I realise my answer has serious flaws and decided to delete it. Now, I want to talk to ...
SuperCiocia's user avatar
  • 24.3k
2 votes
0 answers
62 views

Automatic rejection of edit where I only added tags

To my surprise, I tried to add a couple of tags to this question but the edit was automatically rejected with an error message about how the changes must be at least 6 characters long, pointing to the ...
Helen's user avatar
  • 858
2 votes
0 answers
74 views

How to find a missing post?

Earlier this month I gave a very good answer to a question about the twin paradox. Yet now I can't find the question or answer, either in my page, which supposedly lists all my answers, or by ...
murray denofsky's user avatar
2 votes
0 answers
86 views

Questions held for being opinion based

I just posed a question in causal set notation (in general relativity), referencing papers 50 years old and 5 years old, seeking to know whether notation has changed or usage is a matter of personal ...
Julian Moore's user avatar
2 votes
0 answers
59 views

Why do I keep getting logged out all the time these days?

In the old days, I used to stay logged in to Physics.SE (and other Stack Exchange sites) for many weeks at a time. Only very occasionally would I find myself mysteriously logged out, and have to log ...
N. Virgo's user avatar
  • 33.6k
2 votes
0 answers
58 views

More rep has changed than I can account for

Yesterday I had 1693 rep, but when I logged on today I had only 1689 left. I went in to see if I'd gotten any downvotes. There weren't any, but I did have a "post was removed" notice - I ticked the "...
Wouter's user avatar
  • 5,189
1 vote
0 answers
27 views

Help finding a question about charged metal block expanding in volume

Either myself or someone else had asked a question here about how the volume of a metal block changes as it becomes positively charged (extracting electrons). Going through my question history I ...
Sidharth Ghoshal's user avatar
1 vote
0 answers
120 views

Why does my question need 'details or clarity?'

I asked this question, which is simply about how an outside observer would observe an in falling object into a black hole. The question is simple and clear: Due to the slowing of time as the event ...
user16217248's user avatar
1 vote
0 answers
89 views

Why downvotes on three separate answers in a short amount of time, two times?

It seems that someone doesn't like me, for whatever reason, because three answers of mine have been downvoted in less than one minute the Mar 19 at 8:45 (votes corrected now): Can black holes ...
Jeanbaptiste Roux's user avatar
1 vote
0 answers
184 views

My posts downvoted

I am autistic. It's easy for the physics Stack Exchange team to say I need to amend, so I'm learning as I go. One criticism was that a poster couldn't understand a question. I showed them the ...
MaskedMagician's user avatar
1 vote
0 answers
133 views

Where should I ask a question about Anatoli Bugorski?

I want to ask about Anatoli Bugorski, the scientist who accidentally put his head in an active particle accelerator. My question is about the shape of his wound, and I don't understand why it was ...
Ryan_L's user avatar
  • 750
1 vote
0 answers
98 views

How Can I Ask for an Expert Opinion Without Getting My Question Put On Hold for Soliciting Opinions?

Recently this question about the von Neumann Interpretation of QM (a.k.a. the Consciousness Causes Collapse Hypothesis, CCCH) was put on hold within days of being asked. The reason given was that it ...
NanoBotic's user avatar
1 vote
0 answers
77 views

Answer incorrectly deleted

My answer to the question, "effect of fiber optic on NA" was deleted with the reason given being, "Please don't post complete answers to the underlying problem in homework-like questions." I believe ...
The Photon's user avatar
  • 26.5k
1 vote
0 answers
38 views

Is there a badge for giving a highly up-voted recent answer to a very old question?

I have this theory that an answer today given to an old question is unlikely to be up-voted highly, if at all. I believe this is because people tend to lose interest in old questions, and can't be ...
Physiks lover's user avatar
1 vote
0 answers
93 views

MathJax not working in some cases

I'm not sure if this is the right place to ask this question, but I'm experiencing rather strange behavior of MathJax in Google Chrome. On some stackexchange sites the LateX equations don't render. On ...
mpv's user avatar
  • 5,190
1 vote
0 answers
88 views

User feed and Question feed

Do we have User feed and Question feed by emails notification? If we do not, can we promote to have these features? PS. It is NOT asking about off-site service. What I wonder is whether there is an ...
wonderich's user avatar
  • 7,710
1 vote
0 answers
29 views

Tag for 'general-relativity' does not load in rss feeder

I'm using the latest version of RSSOwl and the tag [general-relativity] does not load any questions. The feed sits next to the other feeds I have and actually looks for questions every time I try to ...
user avatar
0 votes
0 answers
76 views

I want to ask a question that is similar, but not identical, to an existing one

I would like to know why hot air holds more water vapor. There is this question: Why does hot air contain more water? But I would like a more quantitative explanation. Ideally, an explanation based on,...
DeltaIV's user avatar
  • 347
0 votes
0 answers
85 views

Where are the community guidelines in dealing with plagiarism?

Plagiarism online is something of a plague. What guidelines does this site set itself in detecting and dealing with such cases? Are there any? And if so, can someone point me towards it?
Mozibur Ullah's user avatar
0 votes
0 answers
36 views

What is , "You haven't cast a vote to undo"

I want to upvote an answer, I previously down voted. It shows "You haven't cast a vote to undo". . How do I cast one?
Anubhav Goel's user avatar
  • 2,089
0 votes
0 answers
60 views

Starting a chat, including existing comments

There are a few features in Stack Exchange that I can never remember how to do. How do I move a discussion that has started in an exchange of comments to a chat, while copying the existing discussion ...
garyp's user avatar
  • 22.1k
0 votes
0 answers
60 views

Persistent error logging into physics.stackexchange.com with OpenID (Unable to log in with your OpenID provider)

OS - Windows 7 Browser - Firefox v26.0 For the past few days I have been unable to log into physics.stackexchange.com using OpenID. The error I get is below. Strangely, I can log in by browsing to ...
Isopycnal Oscillation's user avatar
0 votes
0 answers
36 views

Stackexchange General login problem (meta)

I can not login through mobile view of stackexchange website. when i click over login, why there is no login option through some mobile browsers?
user avatar