Search found 201 matches

by Cobramaster
Fri Mar 19, 2010 5:55 pm UTC
Forum: Science
Topic: You might be a chemistry major if...
Replies: 139
Views: 42142

Re: You might be a chemistry major if...

2.3% is just bad in my aspirin synthesis lab I got a 70% +-5% yield and we measured the yield using HPLC so I felt pretty damn good.
by Cobramaster
Thu Mar 11, 2010 5:46 am UTC
Forum: Your art and links
Topic: Not ripping off xckd; I just can't draw.
Replies: 9
Views: 2428

Re: Not ripping off xckd; I just can't draw.

Use a clock and a calendar in the background.
by Cobramaster
Tue Mar 09, 2010 3:04 am UTC
Forum: Science
Topic: PITTCON
Replies: 7
Views: 847

Re: PITTCON

Gas chromatography-mass spectrometry aka the easiest way to figure out what something is if you only have a small amount. Its expensive semi-complicated, highly versatile, and highly sensitive. It is also one of the favorite machines used on CSI, though if it was as fast as on CSI, everyone would ow...
by Cobramaster
Mon Mar 08, 2010 5:03 pm UTC
Forum: Science
Topic: PITTCON
Replies: 7
Views: 847

Re: PITTCON

We can keep it here it is Science after all, just not the commonly discussed type like Physics. And while I do not use Thermo for my GC/MS needs at the moment the decade old Shimadzus we have are still working for now though the buttons on the front are stubborn. We do use Thermo Fischer for a lot o...
by Cobramaster
Sat Mar 06, 2010 6:45 pm UTC
Forum: Science
Topic: zoological combat
Replies: 60
Views: 4500

Re: zoological combat

Well against a large cat or dog kicking is going to be the best bet for victory and against a cat probably your only chance, luckily for humans most other animals do not have such stout ribcages and a good swift kick can easily break a few ribs, if you are lucky they will puncture something importan...
by Cobramaster
Sat Mar 06, 2010 6:03 pm UTC
Forum: Science
Topic: Allopatric speciation
Replies: 18
Views: 1631

Re: Allopatric speciation

The problem is there is no guarantee that speciation will happen there has to be a driving force, be it natural selection, some change in the way mating occurs though with humans that will never, be a true boundary unless something replaces the penis/vagina concept, which seems to be a fairly standa...
by Cobramaster
Sat Mar 06, 2010 6:11 am UTC
Forum: Science
Topic: PITTCON
Replies: 7
Views: 847

Re: PITTCON

What company, I went to every GC/MS manufacturer since that is my particular specialty.
by Cobramaster
Fri Mar 05, 2010 12:50 am UTC
Forum: Science
Topic: Chemistry Standardized Test
Replies: 19
Views: 2797

Re: Chemistry Standardized Test

Yes but you do not study the photons, you study the electrons. When you devote yourself to studying the photons you are a physicist and not a chemist. And this is clearly a chemistry question. Plus the vast majority of chemical reactions are entirely light independent.
by Cobramaster
Thu Mar 04, 2010 10:51 pm UTC
Forum: Science
Topic: Chemistry Standardized Test
Replies: 19
Views: 2797

Re: Chemistry Standardized Test

yeah but most curricula do not even talk about the photon until you are in Instrumental Analysis, or Physical Chemistry late in your career and that question seems like it was meant for freshmen. Really the answer should be Protons and Electrons because you have to have the protons to make the eleme...
by Cobramaster
Thu Mar 04, 2010 10:44 pm UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 153214

Re: public misconceptions

Though using a hacker's own tools against themselves is very fun try dumping your virus vault on him while the connection is open causing his computer to freak, while you pull the plug. Very little furious typing involved. And on another topic Believing any "science" that is on the news as...
by Cobramaster
Wed Mar 03, 2010 4:44 am UTC
Forum: Science
Topic: PITTCON
Replies: 7
Views: 847

PITTCON

So did anyone else out in xkcd land make it to the mecca of analytical sciences, or was it just me? And if you did go or are there right now sadly I had to leave after our presentation this morning, whats did you like, and what is the best loot you scored.
by Cobramaster
Fri Feb 26, 2010 6:33 am UTC
Forum: Science
Topic: Astrobiology - what to look for?
Replies: 8
Views: 1282

Re: Astrobiology - what to look for?

My post from the life in our galaxy thread. Well earth-like really is meant to refer to somewhere cooler than Venus and warmer than Mars on average, and placement around a star is only part of that equation, Really large Blue-Giants could have favorable conditions and maybe Red-giants also could hav...
by Cobramaster
Fri Feb 26, 2010 3:27 am UTC
Forum: Science
Topic: Allopatric speciation
Replies: 18
Views: 1631

Re: Allopatric speciation

This is very much a yes and no situation. The chances of speciation occurring to a degree that mating is not possible will probably not happen as along as you can consider either group fully human as the species is today. for the most part until the mechanics of mating change or a major chromosomal ...
by Cobramaster
Thu Feb 25, 2010 4:51 am UTC
Forum: Science
Topic: Life in our Galaxy: Likely or Not?
Replies: 70
Views: 6525

Re: Life in our Galaxy: Likely or Not?

Well earth-like really is meant to refer to somewhere cooler than Venus and warmer than Mars on average, and placement around a star is only part of that equation, Really large Blue-Giants could have favorable conditions and maybe Red-giants also could have this but the solar output may not be quite...
by Cobramaster
Wed Feb 24, 2010 7:01 am UTC
Forum: Science
Topic: Chemistry Standardized Test
Replies: 19
Views: 2797

Re: Chemistry Standardized Test

The only thing I can say is it is definitely not C or D. I would never give that particular question to my students, though maybe just to see how many chose the clearly wrong answer of photon.
by Cobramaster
Wed Feb 24, 2010 2:13 am UTC
Forum: Science
Topic: Chemistry-thermodynamics of reactions
Replies: 12
Views: 1020

Re: Chemistry-thermodynamics of reactions

Ok let me clarify as a chemistry instructor who just covered this. The question is referring to the reactants side of the equation based on the single O2 Mole. And in the process 2H2O is considered a mole.
by Cobramaster
Mon Feb 22, 2010 5:18 pm UTC
Forum: Science
Topic: Life in our Galaxy: Likely or Not?
Replies: 70
Views: 6525

Re: Life in our Galaxy: Likely or Not?

What would really help is using gravitational lensing to our advantage. Say if you can get a telescope to the solar focus caused by the sun's gravity, and on a more practical scale Jupiter may be large enough to create enough of a lens to allow for smaller planet detection, of course reaching said p...
by Cobramaster
Sun Feb 21, 2010 5:51 pm UTC
Forum: Science
Topic: Modern einsteins
Replies: 92
Views: 10553

Re: Modern einsteins

Einstein considered experiment vital but he had other people do the experimenting for him. And most of his theories have been proven though there are a couple that we are years from being able to properly test.
by Cobramaster
Sun Feb 21, 2010 5:45 pm UTC
Forum: Science
Topic: Life in our Galaxy: Likely or Not?
Replies: 70
Views: 6525

Re: Life in our Galaxy: Likely or Not?

Well the issue is with size. The odds that there is not a single extraterrestrial life form in the universe is quite slim when you think of the sheer number of stars and planets, even if earth like planets make up less than 1% of all the planets that still leaves trillions upon trillions of possible...
by Cobramaster
Sun Feb 21, 2010 5:39 pm UTC
Forum: Science
Topic: Human adaptations to environment
Replies: 18
Views: 1779

Re: Human adaptations to environment

The elephants were a southern migration most likely considering the majority of their related species are from northern climes, and in moving south the african elephant developed oversized ears to act as radiators. The indian/asian elephant is in an environment where the extra cooling is not require...
by Cobramaster
Sun Feb 21, 2010 3:55 am UTC
Forum: Science
Topic: Carbonic acid, carbon dioxide and soda water
Replies: 21
Views: 3780

Re: Carbonic acid, carbon dioxide and soda water

I think you found a fertilizer that will really and truly piss off the environmentalists out there. but then they would realize that Sodas release a ton of CO2 into the air and they will have yet another target.
by Cobramaster
Sun Feb 21, 2010 12:14 am UTC
Forum: Science
Topic: Black hole questions
Replies: 35
Views: 3076

Re: Black hole questions

Actually the blackhole could only be wither anti-matter, or normal matter. the first rule of anti-matter is it nullifies its existence when Matter hits it, causing really good explosions of energy.
by Cobramaster
Sat Feb 20, 2010 5:18 am UTC
Forum: Science
Topic: Human adaptations to environment
Replies: 18
Views: 1779

Re: Human adaptations to environment

Yeah the only adaptation to environment that is really hard set in evidence is the closer you live to the equator the darker your skin, with variation in the final shade but the average Polynesian, south Asian and central American native is darker without tanning and of course Africa got the darkest...
by Cobramaster
Thu Feb 18, 2010 12:45 am UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 153214

Re: public misconceptions

Well then you pull a trick out of the Mass Effect bag and use extensive cooling systems to minimize the IR signature when you are not using heat based engines.
by Cobramaster
Thu Feb 18, 2010 12:39 am UTC
Forum: Science
Topic: Too many scientists?
Replies: 79
Views: 11836

Re: Too many scientists?

My university has a similar policy that undergrads who do most of the research work tend to be put as first author and going down in order to the professor. I even have my own research project separate from my advisor's body of work that I could publish without him as an author but he will be includ...
by Cobramaster
Wed Feb 17, 2010 3:45 pm UTC
Forum: Site/Forum issues
Topic: Close the <title> tag on the main site
Replies: 8
Views: 2547

Re: Close the <title> tag on the main site

I would like to thank the person who fixed the tag, whomever it was.
by Cobramaster
Wed Feb 17, 2010 5:52 am UTC
Forum: Site/Forum issues
Topic: Close the <title> tag on the main site
Replies: 8
Views: 2547

Re: Close the <title> tag on the main site

Yeah Opera crapped out on the main site all of a sudden Firefox can handle it though.
by Cobramaster
Wed Feb 17, 2010 4:51 am UTC
Forum: Science
Topic: Too many scientists?
Replies: 79
Views: 11836

Re: Too many scientists?

Part of the problem is right now with the economy on the downturn many of the positions have just disappeared. Here at GSU the Biology department was forced to undergo a hiring freeze even for positions that were filled and became open so we currently have a shortage of 10-15 teaching positions that...
by Cobramaster
Mon Feb 15, 2010 4:57 am UTC
Forum: Science
Topic: Batman Grappling Gun
Replies: 41
Views: 5169

Re: Batman Grappling Gun

You have to remember though Batman has a development budget that rivals the DoD and it gets spent on one guy.
by Cobramaster
Mon Feb 15, 2010 2:09 am UTC
Forum: Science
Topic: Batman Grappling Gun
Replies: 41
Views: 5169

Re: Batman Grappling Gun

You can still use a blank to fire the projectile and a 40mm is way more than you need to do so. Ideally you would use a .410 shotgun shell which has a manageable recoil and is much easier on the size issue.
by Cobramaster
Sun Feb 14, 2010 7:53 pm UTC
Forum: Science
Topic: Regression of Cooked State into an Uncooked State
Replies: 37
Views: 8832

Re: Regression of Cooked State into an Uncooked State

Actually Xanthir the cooked egg has a lower entropy the reason you have to add so much heat is because the partially cooked stages have much higher entropy because you are re-folding the proteins with brute force.
by Cobramaster
Sun Feb 14, 2010 7:54 am UTC
Forum: Science
Topic: Modern einsteins
Replies: 92
Views: 10553

Re: Modern einsteins

Cheer up this day and age gives the poor genius, and I use both terms literally the best chance in history at being noticed and able to accomplish something great.
by Cobramaster
Sat Feb 13, 2010 7:45 am UTC
Forum: Science
Topic: Batman Grappling Gun
Replies: 41
Views: 5169

Re: Batman Grappling Gun

Yeah as far as a delivery system is concerned using a "blank" bullet would be your best bet due to the reliability and energy density, plus almost all of the energy will be used to propel the hook. And as the Mythbusters proved a system capable of pulling you up is not that large at curren...
by Cobramaster
Sat Feb 13, 2010 7:34 am UTC
Forum: Science
Topic: You might be a chemistry major if...
Replies: 139
Views: 42142

Re: You might be a chemistry major if...

Oscillators are fun especially when you get a good Belousov–Zhabotinsky using Feroin as the indicator you can use it for a demo hours after starting the reaction.
by Cobramaster
Sat Feb 13, 2010 3:09 am UTC
Forum: Science
Topic: Regression of Cooked State into an Uncooked State
Replies: 37
Views: 8832

Re: Regression of Cooked State into an Uncooked State

That was the point he is trying to make reversing the cooking process is the same type of phenomena and just as unlikely to happen.
by Cobramaster
Thu Feb 11, 2010 4:52 am UTC
Forum: Gaming
Topic: Mass Effect 2.
Replies: 1033
Views: 101632

Re: Mass Effect 2 is too hard to type. ME2

Best strategy for dealing with Husks is using Area-Reave to take about half of the group's HP away while opening up with something automatic with inferno ammo say the Reavenant Machine Gun, and it helps to have Grunt with his Claymore shotgun and someone else good with guns when you know you have to...
by Cobramaster
Thu Feb 11, 2010 4:36 am UTC
Forum: Science
Topic: Space Elevators... How far off are they?
Replies: 39
Views: 4322

Re: Space Elevators... How far off are they?

Though a series of tunnels from China-South Korea, SK-Japan, Japan-Alaska, and then traditional rail from there and for the overland would be quite efficient if you go to a rail based system or you can do yet another Vac Rail from Alaska to Portland, Seattle, Somewhere in Canada to speed it up more.
by Cobramaster
Wed Feb 10, 2010 8:06 am UTC
Forum: Science
Topic: Regression of Cooked State into an Uncooked State
Replies: 37
Views: 8832

Re: Regression of Cooked State into an Uncooked State

Yeah until we have nano technology on the Hollywood level feeding 2 of them to a chicken is the only way to make a raw egg again.
by Cobramaster
Wed Feb 10, 2010 8:03 am UTC
Forum: Science
Topic: Life in our Galaxy: Likely or Not?
Replies: 70
Views: 6525

Re: Life in our Galaxy: Likely or Not?

What I was meaning to imply is that we have crossed the point where our intelligence as an organism is maxed we are at a purely technological level of progression now. And apart from varying degrees of omniscience without technology you cannot do more, unless you can perceive it. Perception is the l...
by Cobramaster
Wed Feb 10, 2010 6:17 am UTC
Forum: Science
Topic: Life in our Galaxy: Likely or Not?
Replies: 70
Views: 6525

Re: Life in our Galaxy: Likely or Not?

Well as far as intelligence goes we are near the max in the potential to understand, though that is limited by the ability to perceive. So if something could perceive the universe on a greater level it could develop to become a more intelligent lifeform. As far as technological and scientific develo...

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