[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vp / vr / w / wg / wsg / wsr / x / y ] [Home]
4chanarchives logo
Archived threads in /sci/ - Science & Math - 60. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.

File: lg1dib3x0wdjm7qspura.jpg (55 KB, 800x450) Image search: [Google]
lg1dib3x0wdjm7qspura.jpg
55 KB,
"Infant With Brain Growing Outside His Skull Saved By Pioneering Surgery"
http://gizmodo.com/infant-with-brain-growing-outside-his-skull-saved-by-pi-1782348507

Anyone else getting really pissed when they see something like this? Does ANYONE think about how life for this kid will be like when he grows up? It neither will be normal or good and I'm really tired of society pretending there is nothing worse than death, when it is obvious that euthanizing cases like this would be merciful and generous.
Just when will we overcome this shallow standard of...
Comment too long. Click here to view the full text.
32 replies and 5 images submitted. Click here to view.
>>
CHECK. YOUR. PRIVILEGE
>>
>>8156122
What? imagine how much more computational power it will have at it's disposal you small-minded fuck.
>>
>>8156135
Either way we simply need experiments like this.
And down's syndrome people? Maybe they'll be useful for fucking asteroid mining because of X. You seem to not know that mutation is fucking indispensable part of evolution. GFTO of my /sci/.

File: 1464482040900.gif (2 MB, 326x256) Image search: [Google]
1464482040900.gif
2 MB,
What's the latest scientific or philisophical accomplishment /sci/?
Has a new branch been formed or has something revolutionary been created yet?
23 replies and 8 images submitted. Click here to view.
>>
As a Biofag, I'd say CRISPR/Cas. That shit has amazing potential. There is an absolute glut of papers getting published that use it.
>>
I proved Riemann hypothesis last Thursday.
>>
>>8155962
A bit late there.

riemann-hypothesis-unsolved/index.html

File: animal.jpg (10 KB, 300x225) Image search: [Google]
animal.jpg
10 KB,
Is this possible or is it a myth?
13 replies and 3 images submitted. Click here to view.
>>
>>8155890
Cows have 60 chromosomes, which is 4 short of a horse, so this mix will never be viable.

You would have better luck trying to cross a horse with a skunk, or a cow with a goat. The former is unlikely due to the genetic distance between the species, you might get lucky with certain cow/goat hybrids, but they are almost certain to be sterile if they do survive.
>>
>>8155897
Yeah, but
How come this animal has this weird face?

http://g1.globo.com/bahia/noticia/2016/06/animal-com-corpo-de-bovino-e-cabeca-de-equino-chama-atencao-na-bahia.html?utm_source=facebook&utm_medium=social&utm_campaign=g1
>>
>>8155900
doesnt look that wierd to me, are you aware of how many bovid subspecies exist on the planet?

Let's have a nice nuclear engineering thread.

Where's the nuclear industry going? Is studying nuclear engineering viable today? How does it compare with other types of engineering, such as electrical and mechanical, in terms of job prospects and reputation?
15 replies and 1 images submitted. Click here to view.
>>
oh I thought we were actually talking about engineering nuclear plants
>>
So do you want to talk about engineering? Or do you want to talk about college?
>>
>>8155375
>>8155381
Oh my bad, I didn't know I had to pick one and only one

File: timothyno.jpg (27 KB, 539x537) Image search: [Google]
timothyno.jpg
27 KB,
TLDR: retard needs help reading mathematically rigorous literature.

Explanation below.

I'm a math major and as awkward as it's going to sound I have difficulty understanding Mathematically rigorous texts/literature. This problem usually arises when reading older texts, as most new texts are a bit watered down and don't propose as many theorems or proofs as older texts do. Or if they do they're written in a clearer manner.

I have a few books on Modern Algebra and I can get through the first few chapters of the books that I own (it's...
Comment too long. Click here to view the full text.
13 replies and 1 images submitted. Click here to view.
>>
It's always hard when you're starting out, and it gets better over time
>>
Keep practicing. Or just give up and kill yourself. Who cares
>>
>>8155321
I know the feeling, i had that exact problem as a first year.
ultimately i ended up using wikipedia or just google and basically rewriting all the theorems and proofs in more familiar terms.

File: Fenix-E50-Flashlight-Hand-Held.jpg (95 KB, 850x667) Image search: [Google]
Fenix-E50-Flashlight-Hand-Held.jpg
95 KB,
What is electrons? How do you convert them to light? Doesn't this make the flashlight lighter?
32 replies and 3 images submitted. Click here to view.
>>
File: image.png (132 KB, 396x385) Image search: [Google]
image.png
132 KB, 396x385
>>8155239
Yeah, pretty much.
>>
>>8155239
No, they don't weigh less. The electrons flow through the battery, none are "eaten up" by the lightbulb. Energized electrons move into higher energy states. This is called an excited state. It is not stable, and the electrons will eventually move back down to their lowest energy states (except in some cases, such as phosphorescence). This move creates an electromagnetic disturbance we call "light". This light has energy equal to the energy released by the electron moving, which is equal to the energy it took to move the electron to an excited state. This energy comes from the potential difference on either side of the batteries, which causes electrons to move. When they move through a resistant filament in the bulb, they heat up the filament, causing the atoms to become excited. The voltage of the battery is created because of chemicals of opposite charge in each side of the battery. One of these chemicals has free electrons, the other can receive them. In rechargeable batteries, the chemical reaction between the battery fluid and the terminals attached to the wire can be reversed by adding energy to the system.

That's how flashlights work.

tl;dr no mass is displaced because there are the same amount of electrons in the flashlight at any given time, and light has no mass. The energy required to make light was already present in the battery.
>>
>>8155245
Hey man, he could be serious, give him a break.

File: volos_proroka.jpg (33 KB, 500x281) Image search: [Google]
volos_proroka.jpg
33 KB,
Theoretically speaking could we salvage any cells from Prophet Muhammad's hair and clone him?
33 replies and 2 images submitted. Click here to view.
>>
>>8154963
What a waste of time. Do we have any of Jesus' hair? Creating a modern baby Jesus would be enough of a sin to start a full-blown religious war. That would be amazing.
>>
>>8154963
good luck trying to rob his grave
>>
>>8154976
...
Clone both.
Raise them together.
Ensueing bants would be top tier m8.
Bonus points if you can find buddhas bones too.

File: tnt pic.png (3 KB, 246x205) Image search: [Google]
tnt pic.png
3 KB,
How difficult was ochem /sci/? I got to say after a whole year of organic it didn't really live up to it's reputation. After doing the readings plus lecture it seemed pretty straight forward to me.
25 replies and 2 images submitted. Click here to view.
>>
shameless bump
>>
>>8154910

It wasn't hard. Only premed biofags complained about it.
>>
>>8154910
Pretty sure it depends a lot on your school. Some places have super hard gen chem and easy ochem. Other schools it's the other way around.

Only going off of what friends said in undergrad and kids I tutor said later at different schools. I only took gen chem.

File: images.jpg (25 KB, 512x288) Image search: [Google]
images.jpg
25 KB,
"A car travels the first half of its journey at 60km/h. The driver wants the average speed over the whole trip to be 70km/h. What speed must he travel the second half of the journey at?" Is this solvable. I was given this question but I have no clue how to approach it or if I'm just getting trolled. Its not 80km/h btw..
16 replies and 1 images submitted. Click here to view.
>>
>>8154872
Trick question.

Before the car can reach the end of the journey it has to travel half the distance, before it reaches half the distance it has to travel half of half the distance and before it reaches that it has to travel half that distance again and so on an infinite number of times.

Hope this helps :^)
>>
>>8154872
back to high school kiddo. And yes it is solveable
>>
>>8154872
x/70 = x/120 + x/2y
or
1/70 = 1/120 + 1/2y
-1/2y = 1/120 - 1/70
y= 168 km/h

File: 1364120165235 (1).jpg (483 KB, 2250x2250) Image search: [Google]
1364120165235 (1).jpg
483 KB,
I want to learn basic string theory. I don't even know what that means and have no understanding of the topic whatsoever, but I want to learn it because it just seems like the epitome of difficulty. I want a hard goal.

Background: I've always found math and science easy. I've mainly been held back by laziness not a lack of intellectual capacity all my life. Recently got a degree in Computer Science and will be working for a "Big 4" (think Google, Microsoft, Facebook, Amazon) making 6 figures but I feel intellectually unsatisfied because I found...
Comment too long. Click here to view the full text.
34 replies and 6 images submitted. Click here to view.
>>
File: not_even_trying.jpg (48 KB, 627x626) Image search: [Google]
not_even_trying.jpg
48 KB, 627x626
I don't even know what bait pic to choose but I guess I'll just have to pick one
>>
Algebra, Geometry, Trig, Calculus (single variable), Calculus (Multivariable), Analytic geometry, Linear Algebra, Ordinary differential equations, Partial differential equations, Real analysis, Complex Analysis, Manifold Analysis, Abstract algebra, Multilinear Algebra, Differential Geometry, Lie groups, Differential forms, Topology, Algebraic topology, Noncommutative geometry and probably more, but that's just to get started.

Good luck, see you in 10 years OP
>>
>>8154938
As a mathematical physics grad student, I missed the chance to do alg topology and don't have pre req's for algebraic geometry what good intro books exist for these? I have studied all the other things in your list and also have a grounding in qft, qm, electrodynamics, SR basically all main physics groups apart from GR.

File: stUb4qr.gif (2 MB, 625x350) Image search: [Google]
stUb4qr.gif
2 MB,
>photons have mass
yes or no?
12 replies and 2 images submitted. Click here to view.
>>
>>8154727
The whole situation with Hodor is a time travel paradox. It can't happen.
>>
>>8154727
Rest mass, no.
Relativistic mass, yes.
This is almost definition.
>>
>>8154727
>photons have mass
>yes or no?
no.

>>8154739
It follows the self-consistency principle, so it's not a paradox.

File: Joj.jpg (183 KB, 544x680) Image search: [Google]
Joj.jpg
183 KB,
Did have any sort of preference, or was he rather indifferent to the whole concept?
21 replies and 9 images submitted. Click here to view.
>>
>>8154692
He died before all that bullshit came about.
>>
>>8154695
The Descent of Man though.
>>
>>8154692
Darwin's ideas are pretty much irrelevant nowadays.

File: wojakface.gif (17 KB, 418x500) Image search: [Google]
wojakface.gif
17 KB,
Of all the planets in the entire universe with life (and we will assume there definitely are other planets with life), then one of them has to be home to the most intelligent life forms in the universe.

There is no reason that plant shouldn't be Earth.
16 replies and 1 images submitted. Click here to view.
>>
>>8154481
what's wrong with religion? what's wrong with porn?
you should be more concerned about women being allowed to work.
>>
>>8154481
>implies that LGBT is not a sign of evolution
>>
>>8154473
I suggest you watch a movie called Solaris.
Takes on a nice view that life forms can take any form and we are far from understanding what we are let alone someone/something else.

File: coding.jpg (326 KB, 1438x809) Image search: [Google]
coding.jpg
326 KB,
Guys I have an interesting coding problem for you that I'm really stuck with.

Say I have 2 lists of names. Both in random orders but with a few of them in both. I need to find out which names are in group B but not group A. How would I do this in excel or matlab?

To complicate matters further some entries aren't 100% similar but are very similar for example in list A a name might be Andrew B. Cosby and in group be just Andrew Cosby but obviously this is a match and should not be in my answer list.

Thanks guys!
31 replies and 1 images submitted. Click here to view.
>>
>>8154446
Do you know any other coding languages? I don't think excel (and I dont know about matlab) is the best way to handle lists of stings.
>>
>>8154446
>To complicate matters further some entries aren't 100% similar

I don't know what you mean with that but you can use the levenshtein difference with a tolerance level to find similar but not identical strings.

about the other thing,

repmat(A, N_b,1) - repmat(B,N_a,1)'

the zeros are your doubles.
>>
>>8154446
Nigger if you have data like that you need to standarize it first

File: 1353644246173.jpg (57 KB, 500x334) Image search: [Google]
1353644246173.jpg
57 KB,
Can anyone show me a physical evidence of 2nd or 4th and upper dimensions? any?

This lie is worse than holocaust.

It's even worse than religions, at least they have a moral and philosophy for believing invisible creators.
37 replies and 6 images submitted. Click here to view.
>>
I FUCKING THOUGHT SO.
>>
> this low energy bait
go away reddit
>>
>>8154345
it isn't bait and I'm not from that monghole. You can't just dodge away like that. Answer or get out.

banner
banner
Pages: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] [65] [66] [67] [68] [69] [70] [71] [72] [73] [74] [75] [76] [77] [78] [79] [80] [81] [82] [83] [84] [85] [86] [87] [88] [89] [90] [91] [92] [93] [94] [95] [96] [97] [98] [99] [100] [101] [102] [103] [104] [105] [106] [107] [108] [109] [110] [111] [112] [113] [114] [115] [116] [117] [118] [119] [120] [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131] [132] [133] [134] [135] [136] [137] [138] [139] [140] [141] [142] [143] [144] [145] [146] [147] [148] [149] [150] [151] [152] [153] [154] [155] [156] [157] [158] [159] [160] [161] [162] [163] [164] [165] [166] [167] [168] [169] [170] [171] [172] [173] [174] [175] [176] [177] [178] [179] [180] [181] [182] [183] [184] [185] [186] [187] [188] [189] [190] [191] [192] [193] [194] [195] [196] [197] [198] [199] [200] [201] [202] [203] [204] [205] [206] [207] [208] [209] [210] [211] [212] [213] [214] [215] [216] [217] [218] [219] [220] [221] [222] [223] [224] [225] [226] [227] [228] [229] [230] [231] [232] [233] [234] [235] [236] [237] [238] [239] [240] [241] [242] [243] [244] [245] [246] [247] [248] [249] [250] [251] [252] [253] [254] [255] [256] [257] [258] [259] [260] [261] [262] [263] [264] [265] [266] [267] [268] [269] [270] [271] [272] [273] [274] [275] [276] [277] [278] [279] [280] [281] [282] [283] [284] [285] [286] [287] [288] [289] [290] [291] [292] [293] [294] [295] [296] [297] [298] [299] [300] [301] [302] [303] [304] [305] [306] [307] [308] [309] [310] [311] [312] [313] [314] [315] [316] [317] [318] [319] [320] [321] [322] [323] [324] [325] [326] [327] [328] [329] [330] [331] [332] [333] [334] [335] [336] [337] [338] [339] [340] [341] [342] [343] [344] [345] [346] [347] [348] [349] [350] [351] [352] [353] [354] [355] [356] [357] [358] [359] [360] [361] [362] [363] [364] [365] [366] [367] [368] [369] [370] [371] [372] [373] [374] [375] [376] [377] [378] [379] [380] [381] [382] [383] [384] [385] [386] [387] [388] [389] [390] [391] [392] [393] [394] [395] [396] [397] [398] [399] [400] [401] [402] [403] [404] [405] [406] [407] [408] [409] [410] [411] [412] [413] [414] [415] [416] [417] [418] [419] [420] [421] [422] [423] [424] [425] [426] [427] [428] [429] [430] [431] [432] [433] [434] [435] [436] [437] [438] [439] [440] [441] [442] [443] [444] [445] [446] [447] [448] [449] [450] [451] [452] [453] [454] [455] [456] [457] [458] [459] [460] [461] [462] [463] [464] [465] [466] [467] [468] [469] [470] [471] [472] [473] [474] [475] [476] [477] [478] [479] [480] [481] [482] [483] [484] [485] [486] [487] [488] [489] [490] [491] [492] [493] [494] [495] [496] [497] [498] [499] [500] [501] [502] [503] [504] [505] [506] [507] [508] [509] [510] [511] [512] [513] [514] [515] [516] [517] [518] [519] [520] [521] [522] [523] [524] [525] [526] [527] [528] [529] [530] [531] [532] [533] [534] [535] [536] [537] [538] [539] [540] [541] [542] [543] [544] [545] [546] [547] [548] [549] [550] [551] [552] [553] [554] [555] [556] [557] [558] [559] [560] [561] [562] [563] [564] [565] [566] [567] [568] [569] [570] [571] [572] [573] [574] [575] [576] [577] [578] [579] [580] [581] [582] [583] [584] [585] [586] [587] [588] [589] [590] [591] [592] [593] [594] [595] [596] [597] [598] [599] [600] [601] [602] [603] [604] [605] [606] [607] [608] [609] [610] [611] [612] [613] [614] [615] [616] [617] [618] [619] [620] [621] [622] [623] [624] [625] [626] [627] [628] [629] [630] [631] [632] [633] [634] [635] [636] [637] [638] [639] [640] [641] [642] [643] [644] [645] [646] [647] [648] [649] [650] [651] [652] [653] [654] [655] [656] [657] [658] [659] [660] [661] [662] [663] [664] [665] [666] [667]
Pages: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62] [63] [64] [65] [66] [67] [68] [69] [70] [71] [72] [73] [74] [75] [76] [77] [78] [79] [80] [81] [82] [83] [84] [85] [86] [87] [88] [89] [90] [91] [92] [93] [94] [95] [96] [97] [98] [99] [100] [101] [102] [103] [104] [105] [106] [107] [108] [109] [110] [111] [112] [113] [114] [115] [116] [117] [118] [119] [120] [121] [122] [123] [124] [125] [126] [127] [128] [129] [130] [131] [132] [133] [134] [135] [136] [137] [138] [139] [140] [141] [142] [143] [144] [145] [146] [147] [148] [149] [150] [151] [152] [153] [154] [155] [156] [157] [158] [159] [160] [161] [162] [163] [164] [165] [166] [167] [168] [169] [170] [171] [172] [173] [174] [175] [176] [177] [178] [179] [180] [181] [182] [183] [184] [185] [186] [187] [188] [189] [190] [191] [192] [193] [194] [195] [196] [197] [198] [199] [200] [201] [202] [203] [204] [205] [206] [207] [208] [209] [210] [211] [212] [213] [214] [215] [216] [217] [218] [219] [220] [221] [222] [223] [224] [225] [226] [227] [228] [229] [230] [231] [232] [233] [234] [235] [236] [237] [238] [239] [240] [241] [242] [243] [244] [245] [246] [247] [248] [249] [250] [251] [252] [253] [254] [255] [256] [257] [258] [259] [260] [261] [262] [263] [264] [265] [266] [267] [268] [269] [270] [271] [272] [273] [274] [275] [276] [277] [278] [279] [280] [281] [282] [283] [284] [285] [286] [287] [288] [289] [290] [291] [292] [293] [294] [295] [296] [297] [298] [299] [300] [301] [302] [303] [304] [305] [306] [307] [308] [309] [310] [311] [312] [313] [314] [315] [316] [317] [318] [319] [320] [321] [322] [323] [324] [325] [326] [327] [328] [329] [330] [331] [332] [333] [334] [335] [336] [337] [338] [339] [340] [341] [342] [343] [344] [345] [346] [347] [348] [349] [350] [351] [352] [353] [354] [355] [356] [357] [358] [359] [360] [361] [362] [363] [364] [365] [366] [367] [368] [369] [370] [371] [372] [373] [374] [375] [376] [377] [378] [379] [380] [381] [382] [383] [384] [385] [386] [387] [388] [389] [390] [391] [392] [393] [394] [395] [396] [397] [398] [399] [400] [401] [402] [403] [404] [405] [406] [407] [408] [409] [410] [411] [412] [413] [414] [415] [416] [417] [418] [419] [420] [421] [422] [423] [424] [425] [426] [427] [428] [429] [430] [431] [432] [433] [434] [435] [436] [437] [438] [439] [440] [441] [442] [443] [444] [445] [446] [447] [448] [449] [450] [451] [452] [453] [454] [455] [456] [457] [458] [459] [460] [461] [462] [463] [464] [465] [466] [467] [468] [469] [470] [471] [472] [473] [474] [475] [476] [477] [478] [479] [480] [481] [482] [483] [484] [485] [486] [487] [488] [489] [490] [491] [492] [493] [494] [495] [496] [497] [498] [499] [500] [501] [502] [503] [504] [505] [506] [507] [508] [509] [510] [511] [512] [513] [514] [515] [516] [517] [518] [519] [520] [521] [522] [523] [524] [525] [526] [527] [528] [529] [530] [531] [532] [533] [534] [535] [536] [537] [538] [539] [540] [541] [542] [543] [544] [545] [546] [547] [548] [549] [550] [551] [552] [553] [554] [555] [556] [557] [558] [559] [560] [561] [562] [563] [564] [565] [566] [567] [568] [569] [570] [571] [572] [573] [574] [575] [576] [577] [578] [579] [580] [581] [582] [583] [584] [585] [586] [587] [588] [589] [590] [591] [592] [593] [594] [595] [596] [597] [598] [599] [600] [601] [602] [603] [604] [605] [606] [607] [608] [609] [610] [611] [612] [613] [614] [615] [616] [617] [618] [619] [620] [621] [622] [623] [624] [625] [626] [627] [628] [629] [630] [631] [632] [633] [634] [635] [636] [637] [638] [639] [640] [641] [642] [643] [644] [645] [646] [647] [648] [649] [650] [651] [652] [653] [654] [655] [656] [657] [658] [659] [660] [661] [662] [663] [664] [665] [666] [667]
[Boards: 3 / a / aco / adv / an / asp / b / biz / c / cgl / ck / cm / co / d / diy / e / fa / fit / g / gd / gif / h / hc / his / hm / hr / i / ic / int / jp / k / lgbt / lit / m / mlp / mu / n / news / o / out / p / po / pol / qa / r / r9k / s / s4s / sci / soc / sp / t / tg / toy / trash / trv / tv / u / v / vg / vp / vr / w / wg / wsg / wsr / x / y] [Home]

All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.
If a post contains personal/copyrighted/illegal content you can contact me at [email protected] with that post and thread number and it will be removed as soon as possible.
DMCA Content Takedown via dmca.com
All images are hosted on imgur.com, send takedown notices to them.
This is a 4chan archive - all of the content originated from them. If you need IP information for a Poster - you need to contact them. This website shows only archived content.