The h Bar - 2016-10-10 (page 5 of 5)

« first day (2167 days earlier) ← previous day next day → last day (2757 days later) »

user116211

8:00 PM

Is this even an answer:

user116211

0

A: Is the Speed of Light an universal spacetime constant, the velocity of electromagnetic waves, or of photons?

all three move at the same constant speed that is c. the reason to prove it is that gravity waves travel at the same speed. And even the effects of gravity travel at speed c. That is the reason why I say that spacetime's structure can only change at this speed. Am I right to say that the speed of...

user116211

?

@Slereah just summon ACM

He will complain if I mock people

@ACuriousMind why are you absent nowadays

I've retracted my vote for you.

user218912

8:02 PM

@Obliv that's wrong.

@mafia that guy can write a lot. look at his most recent question

user218912

@Obliv are you using quotient rule properly?

user116211

Yeh; noticed some of his posts; they are insanely long and too dull in appearance to be readable.

@bl00 oh man..

I totally forgot to use quotient rule.

LOL..

user218912

what else would you use? lol

user218912

8:04 PM

seems to be the simplest thing to do.

I just differentiated the top and bottom separately 8D...

user218912

nice

user218912

you're like me

user218912

right @0celo7?

it's been a few months since i've computed a derivative okay..

user116211

8:05 PM

@Obliv Don't say this to others; it's embarrassing ;D

@MAFIA36790 tl;dr BUT it is probably mainly wrong on a physical level. It is no spam and attempts to answer the question (though it probably does not) - so free for downvotes, but under our current "no censorship" rules, I think it's reasonable to let this stay

user218912

@Obliv don't worry I make the same dumb mistakes too, except for me it looks like it's really advanced but it always ends up being a basic calculus issue.

0

Q: how is speed of light finite? I am not asking why. I am asking how it works

Am I right to say that the speed of light is finite because spacetime's structure itself needs to somehow accommodate EM waves passing through it? Photons are massless, so they could just pass through space instantaneously, but they don't. This change in spacetime's structure seemingly needs time...

quantum-gravity

gawd ...

talk about making a post accessible

user218912

at least he's wearing a blue shirt.

user218912

+1

8:07 PM

I guess ...

user116211

@Sanya yes; it's an attempt to answer; so it's very reasonable to have a chance to stay; but is it an answer? I doubt.

user116211

@bl00 WTH!

user218912

@MAFIA36790 kidding...

@MAFIA36790 I won't read my way through to judge to be honest

user116211

@Sanya It's REALLY long ;/

8:09 PM

but I think, most people looking for an intellegible answer won't either

so where's the harm

@bl00 what?

@0celo7 When's your class over?

user218912

@0celo7 nvm.

@BernardMeurer 25 mins

Honestly anyone who uses a mouse with a laptop is a horrible person

user218912

@0celo7 for gaming?

8:11 PM

@bl00 I don't usually make mistakes like that lol. I thought "oh.. this function would be a pain in the ass if it were a normal derivative but since it's a partial I can treat x as a constant and just do it normally" but I guess I didn't realize partials weren't that easy.

user218912

@Obliv okay so I guess it's just me then.

user116211

@0celo7 The touch pad seems to be stingy for their delicate fingers.

user218912

@0celo7 weren't you using a gaming mouse with your macbook a year ago?

No not for gaming

For everyday use

@Obliv sure you don't

But the more mistakes you make the smarter you are

user218912

@0celo7 does that apply to me?

8:16 PM

@bl00 okay I got the right answer now. dang lol so my counterexample was wrong because I did the same thing in differentiating that..

user218912

lol

@0celo7 gaming mouses for everyday use rock :)

yeah there is no way i'm going to test functions for non-symmetry of second derivatives. there'd be too much work in differentiation. o well

@Sanya no

You psychopath

:<

psychopath since 2002 ;_;'

8:32 PM

@Sanya what's special about that?

@0celo7 you're probably right ... not too much :D

I mean the year

I just arbitrarily claim that before that I was too young and innocent for being psychopathic

and it is the production year of the mouse that has caused you to call me psychopath :D

@sanya which mouse

wmo?

@Obliv what's wmo?

8:37 PM

microsoft wheel mouse optical. an old school gaming mouse.

what do you have?

@Obliv it's a good old Logitech MX500 :D

isnt that like the old g400

wow ur ancient @sanya

no wait that was mx518 i think

mx518 was later

jeeeez... the oldest mouse i've had was the g400 for a couple years until its cord broke :( now I'm using the zowie za12

the oldest mouse that I had had no optical sensor

8:41 PM

LOL @sanya does your mx500 still work o.O?

@Obliv yeah, some parts have become a bit scarred or lost their paint on the surface, but the mouse works well

you'd be surprised at how long these things work

do/did you play any games competitively or was it a novelty?

never played competitively, but it was one of the first mouses advertised as "gaming" here

you need to consider ... I didn't have any internet fast enough to play anything competitive at those times XD

true.

idk where my mouse is

I've given up gaming

8:50 PM

yeah, now with a laptop, one doesn't really need them that much anymore

@0celo7 have you taken up any other hobbies? I am guessing no

maybe a sport.. or some kind of art..

I don't have time for hobbies

currently doing homework

i guess that counts as a hobby as opposed to reading textbooks

0

Q: Different wavelengths of light need to travel at different rates?

Quick question that started bothering me today. Wouldn't different wavelengths of light need to travel at different speeds in a vac to obtain c due to a longer travel path? Im obviously not smart so an explanation sin math would be appreciated.

visible-light waves

I really can't stand those people

"this just popped through my head today so I thought I'd just post it somewhere"

@Obliv I like reading textbooks

8:57 PM

@sanya that doesn't make any sense. wouldn't the first thing one would do is to search it up o.e

@Obliv I actually have the feeling people don't see things that way

9:28 PM

I don't get people who use the default profile pics.

Like @Jiminion or @Jim

No idea why you would keep those

10:00 PM

@0celo7 should i skip my calc lecture and just learn stuff on my own. what would you do

tempted to just go through mit ocw

screw it i'm going.

Hi, everybody.

10:24 PM

@DanielSank Fish kebab

11:11 PM

Hello

what's going on here

@0celo7, not sure

absence of people?

I'm finishing up my math homework

I'm stuck on math homework :/

I'm sorry

Question about quantum computing: if the input qubits for a cNOT gate can be inputted as a 4 dimensional vector, how would you represent them individually? (Does that make sense?)

@bl00 If you get me Choquet Bruhat (the big one, on the EFE) I'll come back to physics land for a while.

@heather 4 dimensional? Probably can't.

Unless it's over some finite field.

I could just buy it...but I want to read Wolf first

11:20 PM

@0celo7, sorry, I don't follow - do you mean it can't be represented as two separate vectors?

(for each qubit)

@heather I'm a mathematician. I don't know about quantum computing

but if you're asking if one can draw a single 4D vector

no, one cannot

@0celo7, oh, that's not what i was asking

but thanks

user218912

11:40 PM

@0celo7 $137?

@bl00 Yeah it's a bit excessive.

Lee is great :)

I won't have time to read CB until Christmas anyway

I want to review covering spaces, then learn about constant curvature spaces

user218912

ok.

user image

@DanielSank, do you know what the above quantum gate would be? (The one that says $C_{\pi / 2}$ below it.)

@heather I figured it out!!!

@0celo7, what?

Something awesome, I can tell =)

user218912

11:54 PM

what is this book

@heather No

I am just done with topology homework for this week now :)

So I can move on to my lab report

user218912

amazon.com/Student-Friendly-Quantum-Field-Theory/dp/0984513957/…

A lie probably

user218912

it has 5 stars

@0celo7, congrats!

user218912

11:56 PM

it's basically all 5 star reviews.

user218912

I will see a pdf of it to make sure.

Math pun of the day: $\sqrt{-1} \, \, 2^3 \, \sum \, \pi$ and it was delicious

no puns

I will not like you if you make puns

Hey, it's like the only one I'll ever do here

I just saw it on a friend's t-shirt and had to share the awesome

user218912

I also saw that on a t.

11:59 PM

or the t-rex t-shirts...those are pretty funny

"if you're happy and you know it clap your...oh" =)

« first day (2167 days earlier) ← previous day next day → last day (2757 days later) »

Transcript for

Oct '1610

The h Bar

General chat for Physics SE (physics.stackexchange.com). For M...

join this room
about this room

00:00

06:00

12:00

18:00

all times are UTC

site design / logo © 2024 Stack Exchange Inc; legal

mobile