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12:22 AM
that p=np stuff is hysterical
 
12:32 AM
@Skyler Right?
 
 
2 hours later…
2:11 AM
Is there a way to upload images from mobile?
 
@DanielSank Just paste the raw link for the image
It'll show up in the chat
@BernardoMeurer Would you mind testing something for me?
 
@SirCumference What's up?
 
Would ya mind trying out a userscript I wrote, which adds a design to astronomy SE?
 
Let me see the code
 
gist: 55160dcfbdbfc4ce7feb3fa0f8a523e7, 2017-01-07 00:20:36Z
// ==UserScript==
// @name         Astronomy SE design
// @version      1
// @author       Sir Cumference
// @namespace    https://github.com/IStoleThePies/Test
// @match        https://astronomy.stackexchange.com/*
// @grant        none
// @downloadURL  https://rawgit.com/IStoleThePies/Test/test/main.user.js
// @updateURL    https://rawgit.com/IStoleThePies/Test/test/main.user.js
// ==/UserScript==

(function() {
    $('body').css({"background": "url(https://i.imgur.com/teddPuM.png)"});
    $('.container').css("box-shadow", "#EBF2F5 0 0px 0 inset");
    $('.envelope-on, .envelope-off, .vote-up-off, .vote-up-on, .vote-down-off, .vote-down-on, .star-on, .star-off, .comment-up-off, .comment-up-on, .comment-flag, .comment-flag-off, .comment-flag-on, .edited-yes, .feed-icon, .vote-accepted-off, .vote-accepted-on, .vote-accepted-bounty, .badge-earned-check, .delete-tag, .grippie, .expander-arrow-hide, .expander-arrow-show, .expander-arrow-small-hide, .expander-arrow-small-show, .anonymous-gravatar, .badge1, .badge2, .badge3').css("background-image", "url('https://cdn.rawgit.com/IStoleThePies/0c56554efd73dab75025e2019b330c57/raw/676bf382757e8f7e038f7e048e92d58a91c2616e/Astronomy.svg'),none");
    $('#hlogo a').css({"background": "transparent url('https://cdn.rawgit.com/IStoleThePies/0c56554efd73dab75025e2019b330c57/raw/676bf382757e8f7e038f7e048e92d58a91c2616e/Astronomy.svg') no-repeat left top", "text-indent": "10em", "color": "transparent", "margin-top": "-10px"});
    $('.nav a').not('.nav li.youarehere a').css("color", "white");
    $('#footer').css({"color": "transparent", "background": "url(https://b.thumbs.redditmedia.com/OHfYgROyNMImNFXNFM2JVuj5k--vXKhUHDya3GAZbHM.png) no-repeat bottom center"});
    $('#hlogo a .beta-title').css('color', 'transparent');

    var link = document.querySelector("link[rel*='icon']") || document.createElement('link');
    link.type = 'image/x-icon';
    link.rel = 'shortcut icon';
    link.href = 'https://i.imgur.com/yohbpH4.png';
    document.getElementsByTagName('head')[0].appendChild(link);
})();
@BernardoMeurer So?
 
2:27 AM
Sure, I'll run it
tell me how
 
K, you have tampermonkey (or greasmonkey if you're on Firefox)?
 
Let me get firefox, I don't want that on my main browser
 
@BernardoMeurer It just lets you add userscripts
Pretty useful
 
I know
I hate it
 
2:33 AM
@BernardoMeurer you have weird preferences
 
Okay, I got greasemonkey
@DavidZ I don't like things that make it easy for the user to do stupid things
I'm a systems developer
 
@BernardoMeurer OK, so click here and install it
Done?
 
@BernardoMeurer it's one thing to not want to use it yourself (which is smart, that I get), but to hate it on principle is a whole different matter
 
@BernardoMeurer So now go to astronomy.stackexchange.com
Do you see the design?
 
2:37 AM
@DavidZ I hate it in principle. The user is cattle and it should be herded like such
 
Hence I say you have weird preferences
 
@BernardoMeurer It's not a problem if you know what you're doing
@BernardoMeurer Huh...
You sure it's loaded?
 
@DavidZ Agreed :P
 
Check the console
 
2:39 AM
@SirCumference FYI the favicon is uncomfortably close to that of Worldbuilding
 
@DavidZ Woah...
Never even realized it...
 
@SirCumference It's not loading here. I have it installed but greasemonkey won't load it
 
@BernardoMeurer Console errors?
@DavidZ Hmm...have any ideas on what I should make instead?
 
Aha!
You have to be logged in for it to work
 
@BernardoMeurer Wait really?
 
2:40 AM
Woah it stopped working
 
That's...not good
 
I saw it for a second
 
@BernardoMeurer What
Please check the console
 
It worked, it was like black and had a telescope and stuf
 
It's a good thing I'm testing it btw, thanks
 
2:41 AM
then I alt tabbed to tell you you had to be logged
and it's back to normal
"No installed scripts run on this page"
 
@BernardoMeurer Wtf
@BernardoMeurer OK, does the console say anything?
Do Ctrl + Shift + K (or Cmd + Option + K if you're on Mac)
 
What...
OK, does it work on any other browsers?
 
Greasemonkey isn't loading the script on that URL
I can test on Opera if you want
 
@BernardoMeurer That'd be good
@BernardoMeurer Wait, does the code you see in Greasemonkey match up with the code from the chat message I posted earlier?
 
2:45 AM
@SirCumference Just use the telescope you incorporated into the main site logo
 
BTW @BernardoMeurer could it be an HTTPS thing? I noticed the script only works on HTTPS URLs
 
Yep
@DavidZ You're right
it's https
I had it just http
Now it works
 
@BernardoMeurer What on earth...?
Oh...
I'm an idiot
Thanks
 
Working fine on Opera with TamperMonkey
@SirCumference No problems
I'll go back to playing Civ 5
 
2:49 AM
@BernardoMeurer Thanks a ton man
That fixes an important problem
 
3:14 AM
@SirCumference can't. It's on my phone.
 
3:46 AM
@DanielSank Your phone can't copy/paste?
@BernardoMeurer BTW, what did you think of the design? Any suggestions?
 
4:03 AM
@SirCumference I quite liked it, I much prefer dark to white websites
easy on the eyes
 
Good to hear :)
 
@SirCumference interesting idea...
 
@BernardoMeurer Wait
The header is not supposed to look like that...
It should look like this
Can you try re-clicking that link I first sent you?
Wait
Yeah, try re-clicking it
 
@BernardoMeurer You may be in a minority there. Physics started out with a dark design. Almost everybody hated it.
 
@DavidZ Uh oh
Based on that screenshot, do you think Astro looks good?
 
4:19 AM
How are chat themes in SE chat rooms designed?
 
@SirCumference Well, in my usage, your design does not qualify as dark. I mean white text on a black background.
 
Oh
So...what would you rate it?
 
I think it looks nice
For reference:
26
Q: Design for Physics-SE

JinHi all. I'm Jin, and I'll be working on the designs for the Stack Exchange sites as they graduate from the beta phase. Each site will have its own unique theme that will reflect its topic. However, all sites will share quite a bit of common elements so they feel like they're part of the Stack Exc...

^^ don't do that
 
can chat owners or above set the chat theme?
 
Nope, chat themes are set by SE, along with the site design
 
4:27 AM
I see
 
You can change the theme for yourself, of course, by installing a custom script or stylesheet, but that only works for you
 
@DavidZ I don't see that scaling well onto a 32x32 favicon
Any other ideas?
 
5:18 AM
I think it looks fine
I suppose other than that you could do a nebula, or a set of stars (maybe with lens flare), but nothing is going to be nearly as distinctive as a telescope
A galaxy might work too
 
5:40 AM
Obviously you'd want a better galaxy than that, if you were going to use a galaxy, but I suppose the idea has some potential
But I still think the telescope is most distinctive
 
 
1 hour later…
7:05 AM
12 days left
 
user228700
7:17 AM
Hi, everyone.
 
Morning.
How are you this morning? Better I hope.
 
user228700
Only slightly. I'm still sort of down in the dumps. Thanks for asking :-)
 
:-(
 
user228700
How are u?
 
I guess you just have to battle on and hope things improve soon.
 
user228700
7:20 AM
Yep!
 
Me? I have a cold, but that's fairly standard for January in the UK and most of the population seem to have colds at the moment.
 
user228700
Oh :-( Do colds affect u very badly?
 
However, that didn't stop me from eating this yesterday:
Pies!
 
user228700
Wow, that looks delicious! :-)
 
Ooooh are we playing food show-and-tell?
 
7:23 AM
The pies were really nice. I bought five different kinds so I had a variety of flavours.
 
user228700
@JohnRennie Oh, I see. Which flavors?
 
Though all but one had meat in them, so not of interest to you.
 
^ Grape leaf pie.
Filled with yogurt/onion/dill/parsley, etc.
 
user228700
@DanielS:
 
user228700
Crap, why is it not expanding?
 
7:25 AM
@Kaumudi.H Steak and cheese, steak (no cheese), minced beef and onion, pork and cheese and onion. So at least one was vegetarian :-)
 
user228700
 
user228700
^ @DanielS: In answer to your "Are we playing show and tell?"
 
@Kaumudi.H Yes I understood that.
:)
 
user228700
@JohnRennie Oh, nice :-)
 
@DanielSank where I grew up in Khartoum there was a large middle east community and I grew up eating things wrapped in vine leaves. Though they tended to be smaller than your pie. Sort of finger food size.
Like dolmades I guess, though with a wide variety of fillings.
 
7:28 AM
ahem
Yes indeed.
 
In fact we used to grow our own vine leaves. We had a grape vine in the garden, though I don't recall it producing much in the way of grapes.
 
@JohnRennie Ooooooh, nice!
And of course:
^ Best cookies on the planet.
Filled with a paste of dates and orange blossom water and rose water.
 
Mmmm :-)
 
Yeah, I'm sad that they're all gone.
Only one course of action, I suppose...
 
user228700
Half the time I haven't even tasted the ingredients so I have no clue what your food tastes like.
 
7:31 AM
@Kaumudi.H Are you unfamiliar with dates?
 
user228700
No, but I don't like 'em. And I'm googling "Orange blossom water" right now...
 
You... don't like dates...?
wtf
Dates are Nature's candy!
 
user228700
Nah.
 
user228700
They're too sweet and...chewy.
 
:-|
You might wish to consider them as cookie filling.
Oh, incidentally, I almost cut off my left small finger making those cookies.
PSA: If you choose to chop up dates with a large knife, be really careful.
 
user228700
7:40 AM
Ack! :-/
 
@Kaumudi.H I'm with you on raw dates. They grow wild in the Sudan and my parents used to pick wild dates. I always hated them. However they are nice in sticky toffee pudding :-)
 
You're both nuts.
In moderation, raw dates are delicious. Of course you don't sit and eat a bowl of them. They're too sweet for that.
 
user228700
@JohnRennie Stop talking about food I've never tasted >.<
 
Eaten in small bits with some cheese or used as fillings in pastry they are divine.
 
user228700
Cheese?!
 
7:48 AM
Of course. Sweet fruits with cheese is standard operating procedure.
What planet are you from?
@JohnRennie back me up, here.
 
user228700
Wow, wtf.
 
@DanielSank yes.
 
Well there we have it.
Two against one ;-)
 
user228700
:-) I've never tried it so...
 
user228700
Sweet fruits like what tho? (Anything other than dates, pls)
 
7:50 AM
Apples.
Figs.
 
@Kaumudi.H the sort of cheese we eat in the west tends to be far stronger than cheese in India, and eating it with something sweet goes very well with the strong flavour of the cheese.
 
user228700
How do u eat apples with cheese?
 
For example we eat cheese with chutney
 
Slice the apples. Slice the cheese. Lay a slice of cheese on the apple and stuff it into your mouth.
Then run away as everyone else asks for a piece...
For example.
Wait a second, @Kaumudi.H have you not had strong cheeses?
Gruyere? Manchego? Cheddar?
 
user228700
Cheddar, maybe...
 
user228700
7:52 AM
The other stuff I haven't even heard of.
 
maybe?
;oq4 3uq34 p98yq34 t9oyhq3 w4;oihj weap98yu auj [wujiw f'
[asike fp98ywe r;soa f
We need to buy this young lass a ticket to somewhere with half-decent cheese!
 
user228700
:-(
 
Don't frown, eat cheese!
 
user228700
If I could get up, I'd go to the kitchen and take a picture of the kind of cheese I have but I can't.
 
I suspect that unless you've grown up eating strong cheese you'd find it absolutely disgusting :-)
I love stilton ...
 
user228700
7:55 AM
Wtf...
 
@JohnRennie I thought I disliked cheese until I was a teenager.
I had never had self-respecting cheese before so I thought "cheese is gross".
Then, on a flight back from Barcelona with my parents, they served some cheese. I was really hungry so I ate some, and bam my life changed.
 
user228700
The kind of cheese that I have every week is cottage; a.k.a paneer.
 
I have a healthy sized block of manchego in the fridge...
@Kaumudi.H Also very good.
 
@DanielSank Ooh I love manchego, but it's very expensive in the UK.
@Kaumudi.H that's a very mild tasting cheese. A good stilton tastes so strong it will dissolve your tongue :-)
 
@JohnRennie It's not exactly cheap here, but I'm surprised you say it's very expensive in the UK.
Y'all are rather neighborly with the source...
(at least, from where I sit)
 
8:10 AM
Why have we stopped guest sessions lately?
 
@Oswald Guest sessions?
You mean the AMA?
 
@DanielSank yes :)
 
Oh, well, because @vzn and I have been slacking.
Actually, I did find another guest, but simply did not schedule the session.
 
@DanielSank I think it's just that it isn't very popular in the UK so you have to buy it at speciality shops, and they tend to be expensive.
 
I see.
Well, here, it's not exactly sold in all the shops, but it turns out that the neighborhood wholeseller carries it in large blocks!
To my amazement, they also carried chanterelles for a time.
 
8:13 AM
Ahh okay.. @DanielSank
 
8:51 AM
0
Q: time dilation in a gear chain system

Irsan IrsanThought experiment... suppose we have a mechanism connecting two chain gears as follows: gear A rotates at 2 rpm. gear B is near a massive star. because of time dilation, time is slower at B, lets say half the time at A. therefore, as seen from observer at A, the gear at B will rotate only 1 r...

It will just break...?
 
user228700
9:15 AM
@JohnRennie Eek.
 
user228700
[Sorry for the timeout. I'm sick :'-(]
 
9:34 AM
Does anybody know why user Mafia36790 left the community?
 
 
1 hour later…
10:42 AM
@Oswald we set him free because he was working very hard
 
10:55 AM
From the rallies at the weekend I think. I just thought the sentiment was amusing :-)
 
11:09 AM
0
Q: Time Wormholes Detection

user1186621Was reading the possibility of time travel. Now Hawkings states that they haven't invented time travel, because we haven't had a visit from a time machine yet. But he also states that there exists infinitesimal small time portals in real space, but due to their size we are unable to detect them. ...

Too much scifi?
 
@JohnRennie can you explain Snell's law?
 
@DHMO that depends what you mean by explain. Do you mean how is it derived?
 
@JohnRennie well, why does light choose that particular angle?
is this probabilistic?
and what is the internal reflection then?
 
@DHMO no. There are two derivations, one simple and one not so simple.
 
if it is not probabilistic, how come some light goes through and some light is reflected?
 
11:20 AM
The simple one is to draw the lines of constant phase in the light approaching the interface and the light on the other side. These lines have to match at the interface, and it's a simple geometrical argument to show that this can only happen if Snell's law applies.
 
could you explain?
 
The complicated argument is to use the principle of least time aka Fermat's principle. This can be used to derive Snell's law but requires considerably more head scratching.
For the construction using lines of constant phase see this Wikipedia article.
Or Google for many, many more such articles.
 
then why is some light reflected?
can I say that the light knows beforehand what medium it is going to be in?
 
To calculate the reflection you need to match the electric and magnetic fields associated with the light ray at the interface. This is only possible if some of the light is transmitted and some is reflected. You end up with (I think) the Fresnel equations. Let me Google to check.
The Fresnel equations (or Fresnel conditions), deduced by Augustin-Jean Fresnel (/freɪˈnɛl/), describe the behaviour of light when moving between media of differing refractive indices. The reflection of light that the equations predict is known as Fresnel reflection. == Overview == When light moves from a medium of a given refractive index, n1, into a second medium with refractive index, n2, both reflection and refraction of the light may occur. The Fresnel equations describe what fraction of the light is reflected and what fraction is refracted (i.e., transmitted). They also describe the phase...
 
but my problem is why the light can have two paths
what decides which path they follow?
 
11:26 AM
Yes it is the Fresnel equations. Note that this is a purely classical calculation - no quantum mechanics required.
 
user223506
ALL RISE
 
@DHMO I suspect you're getting mixed up with the idea that a light wave is like a hail of little balls i.e. photons. You'd then have to ask how a individual photon decides whether to be transmitted or reflected.
However a light wave isn't made up of photons.
31
Q: What is the relation between electromagnetic wave and photon?

XtroAt the end of this nice video (https://youtu.be/XiHVe8U5PhU?t=10m27s), she says that electromagnetic wave is a chain reaction of electric and magnetic fields creating each other so the chain of wave moves forward. I wonder where the photon is in this explanation. What is the relation between ele...

 
user223506
Hey @JohnRennie I now have reached double figures of answers!
 
user223506
I am catching up to you ;)
 
@JohnRennie so, some energy is reflected and some refracted?
essentially wave-splitting?
 
11:51 AM
Yes, some energy is transmitted and some reflected, though I don't think wave-splitting is a commonly used term.
 
user228700
12:15 PM
@JohnR: What's Scotland like?
 
It's a big country. That's like asking what India is like :-)
It has stunningly beautiful scenery - very wild.
 
user228700
^ That's what I was going for:
 
user228700
 
user223506
my area of Australia is epic
 
user228700
Oh, really?
 
user223506
12:18 PM
yup, I live just 50 metres from the Southern Ocean in my little corner of Western Australia
 
user228700
::Googles:: Nice! :-)
 
user228700
@JohnR: Have u been to Scotland a lot?
 
user223506
I can hear the waves from here on my front porch
 
user228700
@Doc That sounds very nice...but what about in the case of a tsunami?! :-o
 
@Kaumudi.H I went on a walking holiday once, but apart from that I've only been on business trips to Glasgow and Edinburgh. And that's like going to any big city.
 
12:20 PM
Last night dream part 1:
 
user228700
@JohnRennie A walking holiday? Do say more!
 
user223506
@Kaumudi.H i'd be doomed
 
Scotland is a long way from me - well a long way by British standards though not by Indian standards :-)
But North Wales is right next door and that's very beautiful as well.
 
user228700
@Doc Haha :-) Chennai has actually suffered from a tsunami once before, which is why it came to mind.
 
user228700
12:21 PM
@JohnRennie ::Googles::
 
user223506
but I have a 2nd storey
 
Brief summary: There's a terrorist drill car smashed into a tall concrete wall and exploded. This mineral was ejected from it. The green substance certis then give out a blinding mint light. Anything else after that pretty much mirrors the nuclear bomb scene in Terminator 2
 
user228700
@JohnRennie Walking trip?
 
user228700
Gosh, it sounds superb! Was this in your youth?
 
12:23 PM
@Kaumudi.H Yes. For years I was part of a group of old college friends who would meet up once a year for a week long holiday.
We'd go to some mountainous area and spend the week walking in the mountains, or canoing or some activity like thet.
 
user228700
Wow, very nice! Say, what has your experience been with high school? Are u still in touch with those you said you would never let go of?
 
user228700
@Doc Ah, OK :-)
 
@Kaumudi.H to be honest we only ever chat on Facebook these days.
 
hello everyone =)
 
user228700
@JohnRennie Ah, so having an account on Facebook helps? Hmm...
 
user228700
12:26 PM
@heather: Hi :-)
 
People got married, moved to different parts of the country - or other countries. And we've drifted apart.
@Kaumudi.H yes, it is one of the good reasons to have a Facebook account.
Hi @heather
 
@Kaumudi.H sadly, the people you say you will stay close to forever often drift away if you do not see them in person as regularly as possible.
 
user228700
@JohnRennie Hmm. But these days we have WhatsApp and Google Hangouts and all so....
 
You young people use WhatsApp and Hangouts. We old timers use Facebook ;-)
@heather I think it's a natural process. People change over time and you're just not as close to them.
 
user228700
@heather I am well aware of this, having been out of school for only a year now and having lost friends like that, what with the preparing for exams situation and all.
 
user228700
12:29 PM
@JohnRennie :-)
 
I've had meet-ups with old friends that I haven't seen for years. And at first it's great as you chat about old times and exchange news. Then ... well ... you run out things to talk about.
 
user228700
@JohnRennie ...yeah .__.
 
So you part promising to meet up again, but you never do.
 
@Kaumudi.H i moved last year, so my old best friend and i have been trying to stay in touch.
=/
 
user228700
@heather :-| If this is of any comfort to you, my best friend moved to a different school after having been best friends for only 2 years from 9th to 10th grade. He's in college now and I hardly even speak with my other friends because I don't have time, what with the preparing for exams thing but we're still best friends :-) We still find time to talk, even though he's about 5000 miles away, in college and I'm just at home.
 
12:33 PM
Anyhow, I have to go. I'm going in to the office to get a box to post @BernardoMeurer an amplifier.
 
user228700
@JohnRennie Have a nice day, bye :-)
 
@Kaumudi.H 5000 miles? Did he go to the US?
 
Some of my friendships, even those in the casual friends level, behave somewhat like entanglement. As long we remember who each other were and some of the memories, at least after no communication of 3 years, after meeting again and chat, we can pretty much chat like 3 years ago.

Of course, being like entanglement means the connection is very fragile, and I do have many cases the connection get broken for one reason or another.

Most people tend to have a very strong memory of me related to my impression of science passion. In uni I have 1/2 of my friends met simply because they recognise
 
user228700
@JohnRennie I exaggerated, he moved to Punjab. That's about 3000 Kms.
 
@JohnRennie have a good day =)
 
12:35 PM
@Kaumudi.H Gosh, that is about as far from Tamil Nadu as it's possible to get while still remaining in India
 
oh, i found out about this really cool app called Libib
 
user228700
@JohnRennie Ikr? Sigh.
 
it allows you to scan all of your books, like through the barcode, or type in the ISBN, and then sort them by tags and stuff.
it's like a home library app.
 
@JohnRennie The way I handle that is we simply enjoy the silence as we walk around and let the surrounding to generate topics for us. My best friend do felt puzzled on why the silence though as I am not known to be silent most of the time
@Kaumudi.H Contrary to most people, my best friends are NOT in high school, but in primary school
 
user228700
Wow, that's crazy.
 
12:38 PM
and we still maintain contact up to this day
 
user228700
Maintaining contact is one thing. Best best friends is a whole other thing :-P
 
Yo @DavidZ, look at this amazingly useful thread that Community just brought back up to the meta front page
29
Q: Winter bash 2016 - hats are live!

heatherHooray, hats! (Shameless plug towards a hat.) http://winterbash2016.stackexchange.com/ Hat options: I am your father - post/vote on meta Running ragged - earn 150 rep on three non-SO sites in 15 days 011 - collect 11 hats Snapchat - answer in 30 minutes, +3, and accepted Other hats I haven't ...

obviously needs more discussion, since it does not have an upvoted answer.
(i.e.: yet another example of why the feature is completely useless on meta.)
 
The sense of belonging to my primary friends is so strong that I suspect the strong emotion of meeting up with them seemed to coalesce into a single person in at least 12 of my dreams
Like most things about me, where usually the middle is missing, my friendship closiness is something like this:
The honours group was quite stable owing to the career traits of a scientist, who tend to be passionate, curious and honest
(Well at least for most people I have met in these 4 years so far)
However, in terms of belonging, nothing can beat the primary friends
 
@EmilioPisanty eesh, i didn't realize community did that.
 
My sense of belonging to a group depends on a lot of things. However trust and honesty is the most important. I do not like to be with people that is going to pose a potential threat to me or my friends
-3
Q: CHASING ELECTRON GHOSTS

fay's unKleHOW SCIENTISTS JUSTIFIED THE FACT THAT THERE IS NO REASON TO LOOK AT ELECTRON DISTRIBUTIONS OF SUBSTANCES AS THEY APPEAR ON ELECTRON DENSITY PLOTS/MAPS GENERATED, FOR EXAMPLE BY CRYSTALLOGRAPHY TO DRAW AN INSIGHTFUL CONCLUSION ON THE SCIENCE OLD HOT SUBJECT OF ELEMENT REACTIVITIES. SODIUM AND CH...

incoherent and no actual question=downvote
(Note that I actually ignored all the shouting)
 
12:56 PM
i edited to get rid of the all-caps
 
@heather I hope you used some sort of lowercase function and didn't waste your time retyping all of that :P
 
@ACuriousMind yeah, i used an online site
that's why the sentences no longer have the first letter capitalized
 
The edited questions seemed to suggest the OP need to learn better how quantum mechanics work. Meanwhile, I forgot whether x ray crysstallography actually have single element resolution
 
i still have edits to make but i have to go, adios everyone
 
1:37 PM
7
Q: When colours start to exist?

Syed IlyasAtoms individually have no colors, but when there is a large collection of atoms we see objects colorful, which leads to a question: at least how many atoms are required for us to see the color?

Unclear what's been asked? Biology or physics?
 
@Qmechanic Nah, I think it is clear what's being asked (although it's not a particularly good question, imo): OP wants to know how many atoms an "object" must at least consist of to be visually perceptible. Alas, the answerers seem rather confused about what the question asks...
 
2:01 PM
> “I’m being damned by reviewers who write that I don’t use the scientific method – that is, going in with some nice, carefully outlined hypothesis in which you pretty much know in advance what you’re going to find out and what you’re going to do with the information after you find it.
> Well, the scientific method is what you learned in My Weekly Reader when you were in grammar school, but no first-rate scientist uses it. I say, if I knew what I was going to find out, I wouldn’t do that study: I would do something else.”
-- Harmon Craig, 1998 winner of Balzan prize (equivalent of Nobel in natural science)
is there any truth to this?
 
-1
Q: Is there a book about how to do research in Physics?

Rocky TsengIs there a book about how to do research in Physics? especially in Astrophysics, if not, general physics is also very good. thanks.

Yes. There is one book, and after you've read it, you know how to do research. Oh, if only...
 
2:47 PM
@JohnRennie You're a living god
2
 
3:20 PM
This might be the funniest video on the internet
 
Gnnh. Paper I'm reading does Clifford algebra in a setting where 11-dimensional Gamma matrices need to be expressed in terms of 4+7 dimensions, references a paper that does a 3+8 split "for details".
Sometimes I wonder what percentage of the references has actually been read by the authors :P
 
@ACuriousMind Sounds complicated, I suggest you divide and account to it
 
what?
 
vzn
4:04 PM
@Oswald / @DanielSank thx for your interest, we have invited many speakers however no takers lately. always on the lookout for candidates/ volunteers, plz feel free to let us know any suggestions/ recommendations. (DS if you could update the meta post with Secrets session thatd be great, let me know if you want me to look up the link)
 
4:48 PM
@BernardoMeurer I've got a box!! Mail me your current address, or whatever you want as the delivery address on Facebook.
 
5:02 PM
@BernardoMeurer Did you pick up the package I sent you?
 
@vzn You can't edit?
 
vzn
5:26 PM
@DanielSank takes higher rep to edit the question in meta, answers req lower rep to edit :|
 
1
Q: Hypothetical special relativity with mass conservation

Wade HodsonI thought of this question while studying inelastic collisions in special relativity, where kinetic energy is converted into mass-energy. I was wondering if it's possible to formalize a version of special relativity where mass conservation still holds. Basically I'm imagining that, in this hypot...

Well... does it respect lorentz symmetry?, if not it is going to be off from the experiment data very quickly...
 
 
1 hour later…
6:47 PM
Can somebody help me in this
 
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