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/sci/ Science & Math

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Most viewed threads in this category

14 more posts in this thread. [Missing image file: 1362844602871.jpg]
Theres been this weird twitching going on with the middle of my forehead. Like involuntary muscle contractations. They just started today but have been becoming increasingly frequent to the point where if I think to much about it itll happen. Sometimes the base of my head right above the forehead will twitch too. I dont know if its observable but jesus i can feel it. It doesnt hurt, just slightly annoying. Anyone know what this could be? no /x/ shit please pic not related
66 more posts in this thread. [Missing image file: bio_home_page[1].jpg]
Biology is the most bullshit science, this includes medical science. They tend to make up more data than any other group of scientists because they are the least empirical. Read this: http://www.theatlantic.com/magazine/archive/2010/11/lies-damned-lies-and-medical-science/308269/ Engineers, chemist, and physicist can't get away with this kind of shit because all of their work is backed by empirical evidence. There are a lot less redaction and falsely published studies in other fields of science when compared to biology. That is because they do real science, and not just look at shit under a microscope, or count water buffalo. Biology should be considered a soft science. Furthermore shit is always changing in biology which is just proof that biologist don't know what the fuck they are doing. There are also very few laws in biology that weren't taken from physics, chemistry, or engineering. At best biology is somewhere in between a hard/physical science and a social/soft/bullshit science.
8 more posts in this thread. [Missing image file: fa5.jpg]
chemfags, I'm working on a titration problem using a strong base and a weak acid A 40.0 mL sample of 0.100 M HNO2 is titrated with 0.200 M KOH. Determine the pH at the equivalence point for the titration. So I figured the amount of moles of base needed to reach equivalence is 0.004 moles, I added that to the initial moles bringing the number of moles of the conjugate base NO2- to 0.004 moles. Put that into molarity that's 0.004 moles/(0.0200 L + 0.0400L) = 0.06 M; then the pOH = 1.18 and the pH = 12.82. However the answer in the book lists the pH as 18.08. Can someone help me understand this better?
4 more posts in this thread. [Missing image file: chemistry-glassware.jpg]
Calculate the enthalpy change, in kJ, for the reaction: C2H4 +H2 -> C2H6, from the following data. C2H4 + 3 O2 -> 2 CO2 + 2 H2O H = -1411 kJ C2H6 + 7/2 O2 -> 2 CO2 + 3 H2O H= -1560. kJ H2 +1/2 O2 -> -> H2O H= -285.8 kJ Calculate the enthalpy change, in kJ, for the reaction: Ca + C + 3/2 O2 -> CaCO3, from the following data. Ca + 2 C -> CaC2 H= -62.8kJ CO2 -> C + O2 H= 394 kJ CaCO3 + CO2 -> CaC2 + 5/2 O2 H= 1538 kJ Calculate the enthalpy change, in kJ, for the reaction: 2 H2 + 2 C + O2 -> C2H5OH, from the following data. C2H5OH + 2 O2 -> 2 CO2 + 2 H2O H= -875 kJ C + O2 -> CO2 H= -394.51 kJ H2 + 1/2 O2 -> H2O H= -285 kJ Calculate the enthalpy change, in kJ, for the reaction: CS2(l) + 2 H2O(l) -> 2 H2S(g) + CO2(g), from the following data. H2S(g) + 3/2 O2(g) -> H2O(l) + SO2(g) H = -563kJ CS2(l) + 3 O2(g) -> CO2(g) + 2 SO2(g) H = -1075kJ
9 more posts in this thread. [Missing image file: theabaddon.png]
How do i make a dichotomous key in microsoft word? I went to ehow and it's telling me to go to format, i don't even know where format is.
4 more posts in this thread. [Missing image file: 393130_10200428461659099_1381153874_n.jpg]
Please help me out, I got two of these problems on my calculus midterm, but I can't figure out how to solve for y here: x^3 - x = -1 I'd really appreciate some help. pic not related
17 more posts in this thread. [Missing image file: rtrbltlbleftdownrightupleftdownrightup.png]
Halp pls. Or at least tell me what the line in the middle is called. Oh and I need to show work, but it's cool if you just tell me what it's called.
30 more posts in this thread. [Missing image file: ADLHDKOPF RMB.gif]
IF ELECTRONS PRODUCE ELECTRICITY, WHAT DO PROTONS PRODUCE?
14 more posts in this thread. [Missing image file: UCLA.jpg]
At UCLA I am interested in working with Houk a well established chemist At TAMU in Wheeler's group, a young chemist who post doc'd with Houk Sci I will be graduating in May with a chem degree. I have until April 15th to decide between UCLA and TAMU. They both gave me excellent stipends of 28k and 24.8K respectively. Help me choose
14 more posts in this thread. [Missing image file: sidereal.gif]
Astronomy guys, I need your help. I need some code for Matlab that converts local time to local apparent sidereal time, and an explanation as to how it works. I've tried composing my own, but unfortunately it won't work, and I'm completely stumped. Thanks.
36 more posts in this thread. [Missing image file: plants.gif]
FOR THE LOVE OF GOD, SOMEONE TELL ME THAT THIS IS BULLSHIT. WHAT THE FUCK?!? IF THIS IS TRUE, THEN WHY IS THERE ONLY ONE DOCUMENTARY ABOUT IT? http://www.youtube.com/watch?v=7_X2Z9v8-6Q Fast forward to 0:23:00 watch until 0:29:00. > Protip, go to http://YouTube.com/html5 beforehand and select join trial; then you can select 1.5x or 2.0x speed to watch the experiment faster. TL:DR; Plants can sense through walls.
12 more posts in this thread. [Missing image file: 417486_10151493335140155_178112760_n.jpg]
Science: sometimes it fails..
4 more posts in this thread. [Missing image file: Time.png]
How in the fuck this shit become 1? http://www.wolframalpha.com/input/?i=e^%28-%28integral+x%29%29+*+%28integral+%28x+*+%28e^%28integral+x%29%29%29%29 Any help? Step by step solution?

Phage therapy

6 more posts in this thread. [Missing image file: Gandalf displeased by faggotry.jpg]
Ok /sci/ I've got an idea I want to run by you guys, just for general discussion and whatnot. Basically the idea is to use viruses to splice out the mutated gene of a cancer cell and insert the "healthy" gene that should be there. This therapy could be tailored for every type of mutation....which means that this method could be a possible "cure" for cancer...all cancers. Obviously this means that the cancerous cells would need to be biopsied, their genomes sequenced (along with a healthy cell from the patient as a reference) , the genetic mutation causing the problem (uncontrolled growth) to be identified, engineering a virus that can splice that gene out and putting the correct gene back in...thereby stopping the growth, and finally a method for introducing the virus to the patient. Thoughts?
7 more posts in this thread. [Missing image file: 1353248530090.gif]
going back to college after a few years, and i fucking suck at math. This is really easy shit, im just stupid as fuck. Need to find the LCM of these three numbers: 4 14 35 Someone tell me how? Again, i know its easy.
41 more posts in this thread. [Missing image file: Magnus Carlsen breaks Kasparov'(...).jpg]
The theory of big bang is wrong not because it is illogical, but because it was conceived artificially by its inhabitants and not by its creator, whoever or whatever it may be. This is not a religious argument, this is an appeal to unknown. The question of how it all began is unanswerable. It is the equivalent of fish in the aquarium realizing that the universe inside the aquarium began as pieces of glass moulded together in a factory. There is no way to know. Your turn.
3 more posts in this thread. [Missing image file: photo.jpg]
How do you make this thing go from point 1 to point 2?
4 more posts in this thread. [Missing image file: wei-contortionist.jpg]
/sci/, please explain.
25 more posts in this thread. [Missing image file: 1360960868770.png]
Why do people act like immortality in humans is unattainable, when we have animals on earth who are already immortal?
9 more posts in this thread. [Missing image file: 1362697542923.jpg]
A girl nds $1.05 in dimes, nickels and pennies. If there are 17 coins in all, how many coins of each type can she have? You should be able to solve this.






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