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User avatar #4540 - nimba (05/11/2015) [-]
what even is space
User avatar #4543 to #4541 - nimba (05/12/2015) [-]
and it's different to the universe how?
#4534 - joethebeast has deleted their comment [-]
User avatar #4524 - ilovehue (05/07/2015) [-]
texture/viscosity/hardness wise, to what substance could we compare the earth's mantle?
User avatar #4535 to #4524 - alltimetens (05/11/2015) [-]
The mantle isn't just one substance. The mantle is composed of magma, sure, but there is also hard rock, and stuff that, in terms of texture/viscosity/hardness/etc, is somewhere in between magma and hard rock.

So it really all depends. We don't even know what the mantle looks like.
User avatar #4531 to #4524 - nimba (05/07/2015) [-]
User avatar #4526 to #4524 - skoldpaddacommala (05/07/2015) [-]
I think it would be difficult if not a bit naive to compare 87% of the Earth's total volume to a single substance, but I guess you can say peridotite. You will however need to take into the varying high temperatures and pressures along the 2900km deep of mantle we have.

User avatar #4532 to #4526 - ilovehue (05/08/2015) [-]
okay that's it's composition... it compares to what... marshmellow? rubber? dough? peridotite seems hard. To what depth is it lava/acting like a fluid?
User avatar #4522 - goobyman (05/06/2015) [-]
do fog machines just create aerosols of glycerin AKA heat it, vaproize it, let it cool down in the air= turns into fog?
User avatar #4512 - goobyman (05/06/2015) [-]
If we humans can't "see" air, but we can see water because of the different indices of refraction (air being 1.000277 and water being 1.333), can fish see air and can they not "see" water?

I did some quick google searching, and the IOR of the human lens is 1.406 openlibrary.org/works/OL29783W/Optics
and the IOR of a (gold)fish about 1.55 deepblue.lib.umich.edu/bitstream/handle/2027.42/27459/0000499.pdf?sequence=1
What does this mean? can one explain if i am correct and if these two data points make sense?
User avatar #4536 to #4512 - alltimetens (05/11/2015) [-]
You can see the air for yourself if you've ever cooked something and observed the heated gas molecules refract the light. This is also the same effect that creates a mirage in a desert-like climate.

It's hard to guess what air in a room-temperature environment looks like, but it's probably something along those lines.
User avatar #4538 to #4536 - goobyman (05/11/2015) [-]
What I asked if fish see the world like we see it, and if they are in the air, if they see the air like we see water
User avatar #4527 to #4512 - machiavellianhumor (05/07/2015) [-]
i feel like you never experienced a hangover cause you never stopped being drunk
User avatar #4529 to #4527 - goobyman (05/07/2015) [-]
#4511 - liamjamse (05/06/2015) [-]
anyone here do maths could use some advice or something
User avatar #4523 to #4511 - advice (05/06/2015) [-]
I've been known to dabble in maths
#4525 to #4523 - liamjamse (05/07/2015) [-]
well i was studying for a test but i think i got over 50% hopefully so yeah idk
User avatar #4513 to #4506 - goobyman (05/06/2015) [-]
how do i read comments?
it says in the comments ;)
User avatar #4503 - cpawsome (05/04/2015) [-]
Has anyone ever heard of a universal Antenna?
One that could pick up all wave lengths and frequencies?
#4530 to #4503 - Absolute Madman (05/07/2015) [-]
most antenna's are universal. The wavelengths you don't need are being filtered out. Btw wavelength and frequency are corelated
#4501 - feveryoucantsweat (05/04/2015) [-]
I need somones help and advice on this o chem problem. What im thinking is the I leaves teh I bond, causing one to be more elec negative, and attacks the double bond. This leaves the other carbon more positive. Then the Nitrogen attaches and cuases the two five memeber rings to form. I cant explain the Hydrogen though. Am i right or on the right track or am i lost? scienceexplain?
#4502 to #4501 - feveryoucantsweat (05/04/2015) [-]
sorry the picture came out so awful
User avatar #4533 to #4502 - trisomytwentyone (05/08/2015) [-]
Do you still need help with this? I can try to help, but I'm not the best at ochem.
What is your reactant? It shouldn't be pyridine... Then you're adding I2 which I would assume would form a halonium bridge but you don't really have a starting material...
Then you're products don't make sense. Is that cyclopropane with an H over it? Or is that your stereochemistry for... nothing?
#4500 - oxidoferroso (05/03/2015) [-]
Please don't be the next 'neutrinos are faster than light'… I WANT TO BELIEVE, GOD DAMNIT.
Also does anyone knows if there's been some progress? Last thing I read, NASA successfully tested it in a vacumm.
tl;dr → www.ibtimes.co.uk/nasa-says-emdrive-does-work-it-may-have-also-created-star-trek-warp-drive-1499098
more detailed info (I don't know if it's outdated) → www.nasaspaceflight.com/2015/04/evaluating-nasas-futuristic-em-drive/
User avatar #4499 - rainbowrush (05/03/2015) [-]
i have a tendency to read a page 5+ times before realizing I didn't register any of that, given that the subject is boring. How do I not do that?
User avatar #4528 to #4499 - machiavellianhumor (05/07/2015) [-]
take that minute to stand up and walk around then come back to it
User avatar #4504 to #4499 - skoldpaddacommala (05/04/2015) [-]
Read something less boring
User avatar #4505 to #4504 - rainbowrush (05/04/2015) [-]
If I didn't have exams, I would
#4498 - zanntaggerung (05/01/2015) [-]
I'm having trouble figuring out what kind of function creates the graph for a diffraction grating pattern like this if I know the wavelength and the angle/intensity for the first-order maximum (I'm supposed to create a model to match some data I plotted for electron diffraction by adjusting the grating width). I know there are the equations relating the wavelength, angle, width, and order but I don't see how they help. Anyone skilled at this?
#4497 - anonoon (05/01/2015) [-]
Help! 2nd level Computer program C++ final is in 15 days. Any advice on how to study?
#4482 - altosax ONLINE (04/29/2015) [-]
Comment Picture
User avatar #4507 to #4482 - eatcawk (05/05/2015) [-]
what was this? im not really a sciency nerd i just decided to check this board out.
#4508 to #4507 - altosax ONLINE (05/05/2015) [-]
This is the movement of a watch I opened up. This group of parts is called the escapement. This is the hear of all mechanical watches.

It is the ultimately influential part in the regulation and accuracy of keeping time. This watch is 60+ years old and still ticking.
#4510 to #4508 - eatcawk (05/05/2015) [-]
intersting stuff man
User avatar #4509 to #4508 - altosax ONLINE (05/05/2015) [-]
*heart of all watches*
User avatar #4477 - cognosceteipsum (04/27/2015) [-]

Damn. He died when I was just 3 months. I would've liked to see him live some time. He was only 60 too he could have been alive. Stupid cancer
User avatar #4487 to #4477 - nimba (04/30/2015) [-]
I always kinda thought you were 12 like shibe
User avatar #4492 to #4487 - shibe (04/30/2015) [-]
please no
User avatar #4494 to #4492 - cognosceteipsum (04/30/2015) [-]
Aren't you? Or are you like 15?
User avatar #4495 to #4494 - shibe (04/30/2015) [-]
User avatar #4488 to #4487 - cognosceteipsum (04/30/2015) [-]
I had a manic break dude, don't judge me by my problems
User avatar #4489 to #4488 - nimba (04/30/2015) [-]
I didn't notice
User avatar #4490 to #4489 - cognosceteipsum (04/30/2015) [-]
Yeah yeah, sarcasm all you want
User avatar #4491 to #4490 - nimba (04/30/2015) [-]
no seriously, I did not realise you were some kind of crazy
User avatar #4493 to #4491 - cognosceteipsum (04/30/2015) [-]
I'm not. I'm just bipolar. Nothing strange. Had the bad luck of being on the internet about it too.
#4472 - syrianassassinsoul (04/26/2015) [-]
3. A movie requires 220 GB to be displayed in a computer. The size of each frame is 1.25 MB and the frames moves in a rate of 16 frames per second.
a. What is the number of frames in the movie?

b. Find the duration of the movie in seconds then in hours.
User avatar #4473 to #4472 - dcmp (04/26/2015) [-]
first you have to convert gigs into megs
there are 1000 megabytes in a gigabyte
so 220 gigs is 220,000 megabytes
now divide that number by 1.25 to find the number of frames, which is 176,000
divide that number by 16 to find how many seconds, which is 11,000
11,000 seconds is 3.06 hours
User avatar #4515 to #4473 - goobyman (05/06/2015) [-]
aren't there 1024 megs in a gig?
your calculation is wrong.
1024*220 = 225,280 megabytes
225,280/1.25 = 180,224 frames
180,224/16 = 11,264 seconds
3,128 Hours.
User avatar #4517 to #4516 - goobyman (05/06/2015) [-]
what do you mean????????????????
dcmp converted 1 gig into 1000 megs, but 1 gig is actually 1024 megs. so his calculation was wrong.
User avatar #4518 to #4517 - syrianassassinsoul (05/06/2015) [-]
nigga 2late
User avatar #4519 to #4518 - goobyman (05/06/2015) [-]
sorry that this board is so fucking slow, not my fault
User avatar #4520 to #4519 - syrianassassinsoul (05/06/2015) [-]
faith decided it.

now i hope i dont really fuck up
#4544 to #4520 - noburt ONLINE (05/13/2015) [-]

You were wrong, sorry fellow
User avatar #4474 to #4473 - syrianassassinsoul (04/26/2015) [-]
i solved after hours
User avatar #4475 to #4474 - dcmp (04/26/2015) [-]
k den
User avatar #4476 to #4475 - syrianassassinsoul (04/26/2015) [-]
but thanks for the answer.

kinda happy to know i solved it right
User avatar #4470 - connorjay (04/25/2015) [-]
I was struggling with the statistics for my EEG thesis for the past two days, then had a very sleepless night and had some inspiration!

Isn't it great when everything starts to make sense?!
User avatar #4467 - lulzforalpsplane (04/25/2015) [-]
Dr Quantum - Double Slit Experiment Very weird shit I'll tell you... Almost like a creator or something.
User avatar #4469 to #4467 - lulzforalpsplane (04/25/2015) [-]
or Uncertainty Principle, because almost everything in the universe seems to behave like both a particle and a wave at the same time.
User avatar #4483 to #4469 - nimba (04/29/2015) [-]
that's not what Heisenberg's uncertainty principle means, that's just wave particle duality. And that's a supposed property of photons, it doesn't really apply to traditional matter.
User avatar #4484 to #4483 - lulzforalpsplane (04/29/2015) [-]
They were shooting electrons in the video which clearly are part of the atomic structure.

Also the uncertainty principle directly relates to wave and particle property, I didn't at any point define the principle for you to try and correct me.
User avatar #4485 to #4484 - nimba (04/29/2015) [-]
Electrons aren't traditional matter. The uncertainty principle applies to electrons, wave particle duality applies to photons.
User avatar #4486 to #4485 - lulzforalpsplane (04/29/2015) [-]
User avatar #4465 - shadowhorn (04/24/2015) [-]
Isn't circumcision culture in the U.S. incredibly strange? I find it so weird that almost no one ever mentions it or is open about their beliefs. Let's discuss circumcision in general. I'm curious about peoples' opinions.
User avatar #4478 to #4465 - yankeerose (04/27/2015) [-]
It is very strange. I personally am against it. Unfortunately, it has become so ingrained in American culture that an uncircumcised penis is considered quite ugly in comparison. I doubt this sentiment is shared in the rest of the world.
User avatar #4462 - acemcgunner (04/22/2015) [-]
science sucks and it's made up of lies
User avatar #4464 to #4462 - kanadetenshi ONLINE (04/23/2015) [-]
Then stop using your computer.
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