/sci/ - Science & Math

bump

>>6321970
>>>/r/
>>>/wsg/

>>6322028
worst gif ever

>>6321970

thank me later, OP

>>6322054
what the shit is that?

>>6322059
It's an alien observer pretending to be an insect.

>>6322322

>>6322059
Moth Cock

Just ignore the name on this one

Or not, whatever

chemics

awful to study, cool to watch

I love the guy's face

>>6321970
here's one

Jupiter and Saturn in retrograde

Supernova in the Whirlpool galaxy. Notice that its apparent brightness is almost as bright as the foreground stars in our own galaxy.

>>6324219

Why do they move forwards then backwards?

Saturn's polar hexagon in rotation
>>6324223
because the Earth is passing them up in our orbit.

Crab Pulsar wind

Phobos passing Deimos, captured by the Curiosity rover

The MESSENGER spacecraft recorded this view of the Earth as it was leaving our planet for Mercury

>>6324225

Yeah, but wouldn't there be a noticeable size change? And wouldn't the stars' orientation change?

Rotation of Jupiter

>>6324232
Amazing! Never seen this before.

Monocerotis light echo
>>6324234
Yes to both, but not really noticeably. The change in the stars' orientation is called parallax and can be used to calculate the distance to that star.

Until New Horizons flies by Pluto next summer, this is still the best view of the icy dwarf planet we have.

The Cat's Eye planetary nebula expanding over just a 3 year period.

>>6324243
>Monocerotis light echo
Wait, what?
Echo of light from where, offa what?

A lunation is the period of time it takes the Moon to go from new to full and back to new, also called a lunar month.
>>6324249
The star is rapidly brightening. Some of the light gets reflected off interstellar clouds surrounding the object and sent our way. Despite what it looks like, most of the illuminated clouds we see there are actually behind the star, which causes the apparent rapid expansion.

Solar wind

>>6324257
damn, I thought that one was animated. But this one I know is.

Simulated galactic collision

>>6324232

I think thats fake.

Where are the damn city lights of, oh, 7 billion humans?

Not sure if this solar filament is animated, but for some reason i saved it with gif in the name twice, so it's worth a shot.
>>6324260
The camera wasn't sensitive enough and wasn't allowed a long enough exposure to resolve lights from the dark side of the Earth. Had they tried to take pictures of city lights, sunlight reflected off the day side of the earth would have destroyed the camera.

>>6324264
I know I have at least one animated solar gif. Here's a tsunami on the Sun, often called a Moreton wave.

Occultation of Jupiter

Chinese rover Yutu, the Jade Rabbit, rolls onto the Lunar surface. A problem recently occurred on the rover, and it's unclear whether or not it will survive this lunar night.

The artificial satellites of Earth

And I'm out. I'm pretty sure the rest of the gifs I have are still images.

I'm glad this thread survived.
Kept forgetting to dump

>>6324282
whatis

>>6324289
Popcorn, looks like.

>>6324289
pop corn kernel popping in slow motion?

>>6324296

>>6324294
Holy fuck. Is that molten steel?

>>6324299

>>6324294
at first I thought that was a Star Wars gif.

>>6324306
not molten.
red hot though

>>6324311

>>6324308
I'm trying to find the original source and it seems like you aren't the only one who thought that.

I believe it's hot drawing steel missing where it's suppose to be caught and coiled.
It goes in at a reasonable speed but the continuum equation tells us that that a reduction in area is proportional to an increase in speed.

>>6324323
How did they even film that?

>>6324331

>>6324335

>>6324337

>>6324342

>>6324342
it's so beautiful

>>6324356

>>6324365

>>6324369

>>6324232
That is very obviously CGI.

>>6324378
That heat. That blastwave.

>>6324395
it's as real as you or I.
http://messenger.jhuapl.edu/the_mission/flyby_movie.html

>ants.gif: File too large (file: 4.76 MB, max: 3 MB).

well fuck. I guess I can't upload it here :(

>>6324421
thanks for sharing

I guess I could solve a few captchas for /sci/

>>6324430

>>6324433

>>6324436

>>6324438

>>6324438
what is?
>>6324436
could i graph it and look for an Eulerian path?

>>6324439

>>6324299

more of this please

>>6324440
it's a drop of water

>>6324446

>>6324451
last one. It's more technology but still interesting.
Friction drilling.

<--- explain

>>6324468
Bot fly?

>>6324468
It can see!

>>6324356
>wearing_boxers_for_the_first_time.gif

>>6324260
>I think the Moon landings were faked. Where are the damn stars in all those photos?

>>6324323
>>6324294

There you go.

Re-upload on youtube.

http://www.youtube.com/watch?v=uxbsgWOjX5o

>>6321970

>>6324525

>>6324527

>>6324527
Where the fuck are our laser guns, science??

>>6324812
Why haven't you built your own yo?

Several Poincaré sections throughout time of a chaotic system (Duffing oscillator). Made it myself.

>>6324492
>>6324835

Fuck, that's the small version. Here's the larger correct one.

>>6324812
http://en.wikipedia.org/wiki/Boeing_YAL-1

>>6324837
>chaotic system
>looping .gif
hm

>>6322443
Ignoring incorrect spelling goes with the territory.
Stayed based edged.

>>6321970

>>6325431

>>6324468
I seem to recall looking this up and finding it was fake. Bot flies aren't that fast and don't crawl in and out like that.

>>6325434

>>6324436
A Knight's tour. I remember being proud of myself back in high school for programming a search for these. With some of them, you can make a final jump to the spot you started at to get a closed loop.

>>6325416
I don't see the problem. Try to follow one point. After one rotation, it's in a completely different position (in phase space).

>>6322054
Is that porn? I don't think it's allowed in this board.

>>6324342
>>6324356
Are there formulas for these or are they done numerically? Must be hard to maintain accuracy. Look very good.

>>6322325
awesome!

>>6325438

>>6325454
I've derived the double pendulum myself.
There isn't an analytic solution.
I'm gonna do the atwood's machine sometime soon.

>>6324438
>>6324440
>>6324446
To be more precise, what it forms is an "antibubble" or "boule". They form more readily with liquids containing detergent or sugar than with pure water.
The air "skin" around an antibubble is maintained by surface tension, like the liquid "skin" around a regular bubble.

>>6325471
Well, good job! What general technique did you use?

>>6323053
I once created a fake volcano for the Carnival Party in my parish. It had on top of it a balloon with the catalyst inside (potassium iodide iirc) and the goal of the game was to it the balloon with a paper ball and make it explode by pushing it against a needle. When it finally exploded, that same reaction occurred, but much bigger.
The children were pleased.

>>6325477
Not the one you responded to, but in simulating (chaotic) systems the Verlet algorithm is pretty useful. I used it for >>6324837

>>6325477
Lagrangian mechanics, reference frames fixed on each pendulum to simplify some kinematics.
Used the angle of each pendulum as the two degrees of freedom.
Got it in form:
<span class="math"> \mathbf{M} \mathbf{ \ddot{x}}+ \mathbf{f}= \mathbf{0} [/spoiler]
(see pic)
transformed that into
<span class="math"> \mathbf{ \dot{x}}= A\mathbf{x} [/spoiler]
and solved with ode45 in MATLAB (runge-kutta 4/5 or something)

>>6325496
And I made this.

>>6325481
>>6325496
Thanks to both of you. I am familiar with Runge-Kutta of course, but the Verlet algorithm is new to me. I wonder how performance would compare. When using Runge-Kutta, have you tried to see if energy is conserved? Just wondering.

>>6325527

>>6325960

>>6325970
It. Is. ALIVE!

>>6325549
?

>>6325970

>>6326017

>>6326021

>>6326056

>>6322028
is this the solution to the einstein problem thingy?

>>6322325
now all I need is a 3d printer and I can make myself a human.

That or I can just fuck a chick.

>>6322069
HHHHNNNNNNNNGGGG!

>>6326123

>>6326126

>>6326126
This pleases my inner autist

>>6326183

>>6326197

>>6322327
fun fact; schizophrenics don't usually fall for this illusion.

Have fun if you saw it was inverted right off the bat.

>>6326201

>>6326203
as hard as I try, I can't even force myself to see it as a concave object before the turn.

>>6326224
that's good. seriously, think about how fucked up your perception of reality and thus your mind to see that it's an illusion. They use inversions as tests to diagnose schizophrenia.

>>6326203

what could be the reason for that?

>>6323049

what

>>6326233
Explosive Polymerization of p Nitro Aniline
http://www.youtube.com/watch?v=h4pNXAtPJp8

>>6324279

thank you

>>6321970

>>6326246

classic

>>6326017
literally came.

>>6326065
PITA GORA SUICHI!

>>6325970
What is it doing? Is it pissed off?

>>6326334
It looks very pissed

>>6324442
Doesn't prove anything since variations in container depth could account for any apparent ratio.

>>6326388
It's more of a visualization than a proof.

>>6326400
>It's more of a visualization than a proof.
Things that show you why something can be true but aren't actual proofs are typically called insights. In some less formal writing you'll have mathematicians talking about turning an insight into a proof or drawing an an insight from a proof.

>>6326400
notta gif but I couldn't resist

I have nearly 1000 .gifs of Taylor Swift just doing stuff. They're pretty interesting to me, but probably not what you're after.

>>6326400

>>6326682

this takes about thirty seconds to cycle

four-speed automotive transmission

>>6325408
cat dynamics

eagle hunting behaviour

internal combustion

forest flight behaviour

human heartbeat

high-voltage discharge exhibit

tesseract

Comet ISON

>>6325438

rectangular outline of Martian ruins

four-dimensional analogue to the tetrahedron

theorem of Pythagoras

another illustration of Pythagoras

Sierpinski tetrahedron

Stirling heat engine

>>6325434
Isn't oxygen required for gunpowder's combustion?
(I don't know shit about guns actually)

>>6326963

No, the oxidant is included in the cartridge.

>>6322324
How does this shit work?

>>6324232
Google earth

>>6326203
I am schizophrenic

I did not recognise it, and I have seen it before on reflection

Please tell me why this occurs this is highly relevant to my interests

>>6324274
I guess you could say it's a beautiful day

>>6326894
Just a coincidence

>>6326852
This still amazes me. There are a number of interesting analyses of it out on the net. Though I haven't seen anyone identify who made it.

>>6326334
It looks like it is missing something .. important.

>>6327045
I wonder if autists have this problem too.

>>6327045
Better perception that is less tainted by pre-conceived ideas.

>>6327434
Does the right sided view take a little longer to readjust to than the left for anyone else? If I switch back and forth by covering either side, switching to the left view is instantaneous but switching to the right view takes a few seconds, during which the center continues to spin in the opposite direction.

>>6325481
Do you have a code segment?
The basic Störmer–Verlet, the matrix is only a function of the coordinates and not the velocity.
And the velocity Verlet looks like just Newton's method....

>>6327478
Last time I watched it the same happened to me, I tried again now and there is no difference between the two.

>>6327052
There is no straight lines in nature

>>6327434
Oh god I covered both sides and now her leg will only rotate towards me.

>>6327611

>>6327614

>>6327617

>>6327619

>>6327587

>>6327627

>>6326201
>dat engine wear

>>6326228
http://www.wired.com/wiredscience/2009/04/schizoillusion/

>>6326388
>being this fucking autistic

>>6326894
>>6327052
>>6327611
Is there proof that the rectangle is from mars ?

>>6324299
>>6324445
This gif is incorrect. No more of it.

>>6327666
you are false, it is not incorrect :)

>>6327671
Fuck off back to s4s

>>6327686
No really, it's called frame of reference. When you draw the trajectory of the solar system in it's place in our galaxy, you get a helix, not a circle.
Simple math my friend :)

>>6327587
There is actually a way to incorporate velocity dependency into your Verlet Algorithm, I did that for my simulation actually.

>>6327617
>>6327619
Please fuck off with this bullshit. Your mind sees what it expects to see, nothing more. This is what the "face" of mars really looks like.

>>6327716
answer this pls >>6327662

>>6327690
if that is supposed to be our solar system it is wrong. The ringed object would be Saturn? for one of it's revolutions the 3 rock out should make 29, and that's just the 1st point I saw that was inaccurate

>>6327723
it is coincidence. Those cliffs are several hundred meters high and the way the ground slopes the lines aren't even straight, they just look that way from the image's perspective. It's just another case of people seeing what they want/expect to see.

>>6327723
http://en.wikipedia.org/wiki/Pareidolia

>>6327690
>>6327671
>"Look mom, I'm trolling 4chins!"

>>6327434
got both going to different directions when looking at middle one

>>6324232
what are the flashes I see on the dark areas of this photo? towards the end of the GIF. starts at the dark side of the earth goes almost straight down.

>>6327746
>>6327750
I didn't ask if its a coincidence or if its a face. I asked if it was a legitimate photo of mars or is it just some irrelevant photoshopped landscape.
I'm asking because I wanna search for a bigger resolution pic of it.

>>6327871
Yes both are real pictures of Mars taken by the Mars Orbital Camera (MOC). Whether or not that individual picture above has been altered with photoshop, idk, but it is at least based on a real picture.
http://ida.wr.usgs.gov/html/e10004/e1000462.html

>>6326388
it's a visualization for 6th graders you autistic dolt

>>6327894
thanks for this. Really interesting photo. I see lots of straight lines here. Not sure why but judging by the environmental behaviour of earths deserts, I'd say they are caused by the stable wind slowly scraping off the dust on the ground in shape of lines depending on the wind direction.
It's not surprising to see two parallel dunes, coincidentally creating a rectangular form.

>>6327964
forgot image

>>6322396
am i gay if i want to put my dick in that hole?

>>6327948
Bases universal fluid mechanics.

>>6327964
>>6327967
I don't see any actually straight lines in that photo, let alone perfect rectangles.

>>6328090
The image on the website is inconspicuously divided. That anon snagged the lower portion of the photo, here's the upper part that shows the square-that's-not-really-a-square.

>>6328101
It's not even a rectangle

>>6328057

>>6328189

>>6328200
animal abuse :0

>>6327045
schizophrenics have a problem with top-down processing (seeing something and immediately recognizing it based on similar things). they're focus tends more towards bottom up processing (looking at something and identifying what it is by its immediate characteristics).

work for you?

>>6328230
>implying you can abuse something without a brain
P-plants can feel too! Plant abuse!

>>6327752
i want one

>>6328267
yeah. because it's magic that moves the jellyfish right ?

>>6328315
reflexes dont require a brain.
when you touch a hot stove on accident, the impulse doesnt even reach your brain before you instinctively move away from it

>protip; the only species of jellyfish with brains is the box jellyfish

>>6328315
>magic

>>6328322
bullshit. Source or STFU.

>>6328315
>>6328322
How do those fuckers mate anyway ? They don't have brains, they don't even have dicks.
Is it actually magic ?

>>6328337
>Source or STFU.
ok
>jellyfish dont have brains
http://science.howstuffworks.com/zoology/marine-life/jellyfish.htm

>reflexes dont require a brain
http://faculty.stcc.edu/AandP/AP/AP1pages/nervssys/unit12/reflexes.htm

>>6328341
spores

>>6328336
why do touch-me-nots do these things?
why does jewel weed need an animal to brush up against it to pop instead of just launching when it has enough spring force loaded?

>>6328343
I still don't understand how local neurons can 'act' upon something like this. You need experience to know that you have to move away from the stove. And since experience is stored in memory, the signals need to travel to the brain so it can know to evade it. Otherwise it implies that local neurons are complex enough to process, analyze and react to the input. Which would blow my mind if its true.

>>6328343
neat

>>6328356
>Otherwise it implies that local neurons are complex enough to process, analyze and react to the input
What exactly is your problem with this?

>>6328356
>I still don't understand how local neurons can 'act' upon something like this
its not local ones, your spinal cord regulates reflexes

>>6326275
i got that reference anon

>>6328322
>when you touch a hot stove on accident, the impulse doesnt even reach your brain before you instinctively move away from it

then why does a spinal injury prevent a para from moving his foot when it's burnt?

>>6328398
Because it's processed in the ... wait for it ... spine. As has been said a few times already.

>>6328356
You don't need experience to know that you have to move your hand, if it hurts the spinal cords is gonna react, that's all.

>>6328398
Because the spinal cord is no longer connected to the bottom of the body?

wish it were more feasible to make higher res gifs.
maybe I'll try making a few wiggle stereograms after I dump these couple.

>>6328425

>>6328429

>>6328430

can someone make a .gif of this video?
the part where they actually do it?

http://www.youtube.com/watch?v=R_w4HYXuo9M

>>6326227
The schyzos confirmed to be the true sane, they don't fall for conforting illusions

>>6324290
this one is pretty amazing
>>6324299
I remember the first time seeing this, sadly it is not true
>>6324305
whats in the glass?
>>6324433
I like
>>6325456
>>6325471
Russians
>>6326126
what the purpose of this? control speed?
>>6326156
I like this
>>6326871
Is I weren't doing CS, I'd go for mechanical engineering
>>6327752
lol

>>6328446

>6324299
>I remember the first time seeing this, sadly it is not true
how so?

>>6326871
>Four stroke
>No mention of glorious two stroke
Fag who can't even change his own oil detected.

>>6326334
Snake heads can still move and bite after removal from the main body for some time. If you ever get the chance to kill a snake with a shovel or something, BURY THE HEAD. Do not pick it up.

>>6324228
this is fucking cool

>>6324311
sandblasting?

>>6326156
SO-45 doesn't give a fuck.

>tfw we know when the doomsday is

>>6326259
I'm going to use this to give weak minded people nightmares. Thank you.

>>6326849
guiz I know how jebus did fish and bread miracle!

>>6324468
>
You can tell it's CGI from the start. How do people fall for thinking this is real? I don't get it.

>>6328446
if you liked that>>6324290
you should check out >>6323412
and for your pool side action >>6325434

>>6328446
> whats in the glass?
hot water
>what the purpose of this? control speed?
continuous to discrete motion.
something like putting slides in play for a set amount of time

>>6328484
4 stroke is better

>>6328525
laser cleaning

>>6328341
They have another life-stage where they are completely sessile (attached to rock/ground). The "jellyfish" you see is actually just the hydra, or reproductive structure which buds off of the mother organism. In some species it can then mate and/or release larvae which can become new mother organism, and which are often free-swimming. The larvae implants itself in a surface and begins to grow by filter feeding on microorganisms that flow by.

You could argue in some species that the primary life form of a jellyfish is the anemone-like organism that just sits on the rocks, constantly releasing fresh free-swimming reproductive creatures.

>>6327034
Wood making up the ramp gets wider. The center of mass does move downwards. Nothing more than an illusion.

>>6328569
>4 stroke is better
>based inner city textbook ignorance

>>6327905
>why would you teach children with such lack of rigor

>>6328439

Stare at the center of this for 5 to 15 mins, shit bricks afterwards.

>>6328612
That, and there are talk saying that one species is able to have psudo immortality

>>6328725
2 stroke is better
that's why everyone has a 2 stroke has a 2 stroke engine

>>6329140
Try as I may, I have never been able to understand this concept.

>>6321970

>>6329253

>>6324234
>And wouldn't the stars' orientation change?

Not when the photo is taken at the same time every night.

>>6326259
The NOKIA is unkillable

>>6329261
uhm, no. The stars do move across the sky from night to night. If you take the photo at the same time every night, you will see them slowly drifting to the east. The reason the stars don't move in that gif is that they have been fixed as the background. If instead you fixed the planets in one place in that same gif, you would see the stars doing a retrograde motion.

>>6328540
You maybe know when the dooms-billion-year-period may occur. Unless we destroy ourselves.

>>6329161
Isn't that the one which permanently fucks your eyes?

>>6329448
It goes away after a while.

>>6328057
someone explain this please

>>6326900
this hurts my brain

>>6329555
Magnetic Smelting through induction

>>6326867
brutal

>>6326259
ITS ESCAPING

>>6325960
where can I get some of this?

>>6322324
Can anyone clarify what science this is, because I don't get that experiment?

>>6329563
>smelting

its fucking melting, retard. smelting is purifying the metal from an oxide ore.

>>6329161
Ok, what should happen? I tried looking at it for a while but nothing exceptional happened, if I have to waste 5 minutes looking at it I want at least to know it's worth my time.

>>6329659
It's pretty cool
http://en.wikipedia.org/wiki/McCollough_effect

>>6326849
trick gif

>>6329667
>>6329667
I guess one needs that test image or something for it to work.


Suppoes the colors stick to the orientation of lines somehow, cool indeed.

>>6329765
If you are gonna try it can you check if lines of text like in the wikipedia page change colors?

>>6326010
If you're simulating a chaotic system, you need *much* better precision than that. Reduce your step size dawg.

>>6328322
I'm pretty sure mos reflexes are in fact handled by the brain. A notable exception to that is the knee reflex.

>>6328189
What's that moving thing to the upper right?

>>6329257
What's that?

>>6327716
>Please fuck off with your denialist bullshit. Your mind refuses to see what it does not expect to see, nothing less.

>>6327716
>This is what the "face" of mars really looks like.
So... pretty much the same as it did in the other picture, but with the light coming from a poorer angle so the interesting features aren't as clear?

>>6330912
a weather balloon

>>6327752
http://www.youtube.com/watch?v=bOD2-mRphTI

>>6324455
Robot sex.

>>6324488
Sides. Mine.

>>6326876
>My penis when