Archived threads in /sci/ - Science & Math - 667. page
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So with all those sexy IXS photos floating around, I thought I’d condense all that wild data into one place of relevant links and information for discussion. Let’s see how that goes.
>Origins.
In 1994, Miguel Alcubierre of the National Autonomous University of Mexico proposed a metric that would reconcile faster than light travel with Einstein’s relativity equations. This “Alcubierre Drive” was based on the idea that a sphere of matter with a negative energy density would cause space-time to warp around a given craft and...
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>>6585660
Flash forward to 2011 with Mae Jennings and DARPA’s 100 Year Star Ship, and NASA Scientists Dr. Harold ‘Sonny” White. White formulates an alternate calculation of the Alcubierre Metric that would allow a craft to travel through space in excess to 100 times lightspeed, with a negative mass no more than that of a negative voyager probe (-700 kg or less). Released in the Advanced Propulsion Physics Laboratory: Eagleworks (APPL:E) paper entitled ‘Warp Field Mechanics 101” (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20110015936.pdf ) APPL:E (who also make the red velvet enigma that is the Quantum vacuum plasma thruster) noted that if the shell is shifted from as sphere to an American football shaped toroid; the required negative mass density is exponentially lowered. The APPL:E paper thus proposed the White–Juday warp-field interferometer; an apparatus that would use a He-Ne laser to detect warping as caused by this York Time.
By 2013, White had released an update at the The Icarus Interstellar Starship Congress. “Warp Field Mechanics 102” went into further conceptual detail and gave an update on the test. Noting it had given non-zero results, but that further test would be required due to possible interference. (http://www.youtube.com/watch?v=ucyBMB_PWr8) Since then APPL:E has moved to a larger and more seismegraphically stable location in an old Apollo facility.
>>6585663
We are already on Mars, the Outer Planets, etc... anything within 2 parsecs is feasible at this point in time.
>>6585663
Apollo facility.
“102” Also stated that White would be working with longtime Star Trek designers and NAS collaborators Mark Rademaker and Micheal Okuda on an update of the classic Star Trek concept art of Matthew Jeffries , that would premier in the 2013 Starship pinup calendar “Ships of the Line.” (http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20130011213.pdf )
Teal Deer:
FTL has gone from “batshit retarded;” to “mathematically plausible” and is inching towards “ experimentally...
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There has been quite alot of talk about settling Mars. In the future, we'll probably send researchers and maybe eventually settlers to Mars to carve out a living on the unforgiving world.
But has anyone considered settling Venus?
Venus's size is similar to earth's, and the result would be that the change in terrestrial gravity wouldn't have an adverse effect on human growth or development for future generations.
I know, the atmosphere and proximity to the sun make Venus inhospitable to human and other oxygen dependent life. But what if we changed that?
What if through chemical processes we were able to harvest the oxygen from the primarily carbon dioxide atmosphere? We could take quite a bit of the oxygen out and use it for humans to breathe.
There is still the matter of the extreme heat. To combat this, I presume we could build under the surface and create a sort of cooled bio dome. Covering Venus in solar panels or something that efficiently harvests the energy of the Sun would give us the energy to cool the underground units and the excess energy would be used in the oxygen harvesting plants.
Research would be done to find hydrogen to create water. Bringing water from the Earth would not only be economically unfeasible but would also be a disaster--since all the water we have on earth has been here since it formed, we'd eventually run out of water on earth and would disrupt the vital biological cycles important to life here.
Keep in mind that with current technology we are nowhere near this sort of plan. However, I think that with a concentrated effort, we could be on Venus within a thousand years.
What are your thoughts on something like this? What are some challenges we would face with this project?
>>6578610
>Keep in mind that with current technology we are nowhere near this sort of plan.
See, http://en.wikipedia.org/wiki/Colonization_of_Venus.
One of the more interesting ideas to combat pressure and heat issues is to create floating aeorstat cities. Which is completely feasible with current tech.
>>6578610
No, we will not be colonizing any planet.
Humans were designed specifically for Earth. Once our planet dies, so do we.
Hell, we may will perish before our planet dies.
Get used to the harsh reality.
>>6578950
>being this pessimistic
lighten up bro, it's not impossible
Do you scienticians and mathematists have stereotypes for other branches? Like, do physicists make fun of geologists and stuff? What are some of the stereotypes people in your field have of other fields?
>>6576377
>Physicists are arrogant pricks.
>Pure mathematicians are antisocial and insane.
>Engineers are homosexual.
>Geology is the worst science.
>Biology is almost as bad as geology.
>Chemistry is dumbed-down physics.
Not really, except all fields collectively agree that engineers are raging homosexuals.
>>6576386
/thread
Can anyone recommend a good introductory physics textbook that doesn't use calculus? I know how to do calculus, it's just that the physics course I'm taking doesn't use it because it's beginner's physics so I'm looking for a textbook along those lines.
>Physics without calculus
Are you in high-school?
What physics course is that (mechanics, electromagnetism, thermodynamics etc.)
>>6579914
It's an introductory physics course in college. I think it's the equivalent to physics 11.
>>6579845
>physics without calculus
This confuses me. For what kind of social science majors is this course supposed to be?
someone post the pictures of god tier/shit tier majors, or anything relevant to making fun of other majors. i have some computer science nerd's shit to push in
>>6580604
You're cool.
>>6580610
it's ok to be a computer science major, just as long as you know you're an autistic shutin
>>6580604
>rank ordering majors
go do your fucking homework
Hello. I have some questions about medicine, such as SSRIs including fluoxetine (Prozac).
How do they work?
Is it really effective? Does it REALLY work?
How exactly did they come across this medicine?
Why do conspiracy theorists flip so much shit about Prozac, and fluoride in general? I hear so much about it these days.
Are they right about how it's bad?
Should I have kept taking my medicine? [40mg fluoxetine, 250mg divalproex ec] Would it have fixed me? The only thing I regret is that I can't focus as well without it, and it takes me an hour to...
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>>6578014
been on a million different drugs for most of my adult and teen life.
Depending on your personal brain chemistry, the drug that works best for you isn't necessarily gonna be the first one you take. Second, they can have side effects. There's a lot trial and error there. The drugs can also take a long time to even feel an effect and it can take months for the drug to take full effect. Additionally, SSRIs are a very broad push instrument. Without making many different changes in your life, such as the...
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>>6578048
/pol/, you drunkard skinhead.
>>6578066
huh?
What is the likelihood that an advanced civilization existed long ago on Earth and was wiped out?
>>6576957
Modern humans evolved 1 million years ago
10,000 years ago we have cave art
Between then and about 3000 BC not much is recorded
I'd say possibly, we "know" of some through legends like Atlantis and Lemuria, and teh library of alexandria was burnt down so we technically have tons of lost knowledge and possibly history.
So again, maybe.
>>6576970
who said it had to be a human civilization?
We would have found evidence. It's not impossible, but at the very least they weren't as advanced as us. If humans died out right now, in 1 million years there would absolutely be traces of our civilization.
How can we escape gravity more efficiently?
>>6569688
More efficient fuels.
\thread
>>6569688
If you'd have enough energy to exploit Calabi–Yau manifold, you could use its relativistic effects to control quantum gravity through its extra dimentions.
>>6569688
not more efficient fuels, stronger materials. (space elevator)
What kind of research is /sci/ doing?
Tell us about the research you're working on. Ask for or offer second opinions. Suggest ideas for new experiments. Offer advice for posters looking to get into research work.
All scientific fields are welcome - from physics to psychology, life sciences to linguistics.
>>6568708
Haven't you figured it out? Everyone here is a high-schooler.
>>6568708
OP's pic
"Oh, it's a liquid."
"Yep my son, that is a liquid."
Extraction and purification of ergine from morning glory seeds using ion chromatography and isoelectric focusing.
No, it isn't original work, and no I'm not doing it to synthesize LSD or to consume/sell it.
Though this may seem a minor occurrence, the Orion Spacecraft has been mated with its heat shield.
Avcoat and Phenolic Impregnated Carbon Ablator – with a technical name of AVCO 5026-39 HCG (Filled Epoxy Novalac in Fiberglass-Phenolic Honeycomb) will be the ablating material of choice for this particular heat shield.
Right now, this heat shield will not likely be used on future Orion flights as it does not posses the needed ablative properties for a return from Mars flight. However, the heat and G loads on the structure itself will provide valuable, updated...
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>>6567899
Whats a good site for space exploration related news?
>>6567957
I'm a member of nasaspaceflight.
If you have cash to throw at it (Or work in the military or work in the space industry like I do) then you can join L2 for more exclusive information.
Other than that spaceflightnow is strongly recommended.
Otherwise, I will try to keep this forum updated. Back from 2007ish until 2011 I was a frequent poster on /g/ detailing space flight related news and real time launch coverage.
However, after the end of the space shuttle program I stopped posting on...
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Unrelated image, concept model of the Orion EFT launch system for December.
This launch is not man rated FYI
http://www.iflscience.com/space/could-supermassive-black-holes-center-galaxies-be-wormholes
>A duo of theoretical physicists from Fudan University, Shanghai, has proposed a very intriguing hypothesis; supermassive black holes at the center of normal galaxies, including our own Milky Way, may not actually be black holes at all. Instead, they could be wormholes.
>Furthermore, wormholes could help to explain the conundrum that even young galaxies are equipped with objects that are believed to be supermassive black...
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stop reading articles on websites with names like "i fucking love science" which grossly misinterpret experimental conclusions
>>6564877
POSTING IN A POPSCI THRAD!
>>6564890
>hur i cant follow links
http://arxiv.org/abs/1405.1883
Did you read the aftermath of this? Is it bunk, or is it still going? Was it finally peer-reviewed?
http://www.extremetech.com/extreme/156393-cold-fusion-reactor-independently-verified-has-10000-times-the-energy-density-of-gas
http://arxiv.org/abs/1305.3913
>Against all probability,a device that purports to use cold fusion to generate vast amounts of power has been verified by a panel of independent scientists. The research paper, which hasn’t yet undergone peer review, seems to confirm both the existence of cold fusion, and its...
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>>6564881
>he’s a very secretive man,it seems
Uh huh.
I'm gonna go ahead and call bullshit.
> The research paper, which hasn’t yet undergone peer review
It's pointless discussing this until it has. I'll believe it when I see it.
>>6564882
the thing is that this is a year old, so I was asking if anyone read the aftermath of this.
>>6564883
I'm guessing since we never heard anything about it then no.
Physicists designing an experiment to make matter directly from light, something widely considered so fiddly to be almost impossible to achieve in the lab 50 years ago, made headlines.
This would have made headlines if it wasn't bullshit.
Can someone please tell me why are men attracted by female butts?
I've heard people saying that it's an evolutionary instinct because a firm, round butt means health and fitness, but is there any science backing this up? I don't feel attracted by butt, and it seems to me to be a social construct rather than a natural instinct.
it's where you put your dick
>>6549801
If you're going to make the claim that giant ass = more fertile, you need to back it up with actual statistics.
We've made a God-Tier math books thread.
Make one for physics...
Feynman Lectures on Physics.
>>6563662
>Landau and Lifshitz.
>Greiner et al.
>>6563662
for theoretical physic, here is a website with free ressources ordered by subject.
www.staff.science.uu.nl/~Gadda001/goodtheorist/index.html
How do I get into robotics?
>>6560438
lrn mechanical, electrical, and computer engineering for starters.
>>6560438
buy yourself an Arduino kit with servos. Also.. learn C programming language. Easiest and fastest way to learn is by doing.. and making mistakes along the way. If you're looking to be more than a robotic tinkerer with pre-interfaced parts from kits, try a degree in electrical engineering. The Arduino kits are a good start though.. to get familiar with the stuff and start building right away
step 1 buy arduino
step 2 program arduino
step 3 attach servos motors, lights, sensors, ect.. to arduino
step 4 make arduino do stuff
step 5 repeat steps 1-4
step 6 ?????
step 7 Profit
