Search found 201 matches

by Cobramaster
Thu Jan 27, 2011 8:53 pm UTC
Forum: Fictional Science
Topic: "How Do ___ Work?" "Magic."
Replies: 36
Views: 11945

Re: "How Do ___ Work?" "Magic."

How do SPMEs work? Magic!

Which makes so much more sense than trying to say random vapor molecules bump into a chemically sticky thread, that you can barely see to begin with, and to collect a sample you cant see, period.
by Cobramaster
Thu Jan 27, 2011 8:50 pm UTC
Forum: Fictional Science
Topic: Parallel Universes
Replies: 29
Views: 11300

Re: Parallel Universes

See Slyreaper this is why you find a nice empty pocket of Space and hope nothing is different in the other universe, say somewhere outside of Pluto's orbit, which should not be a problem considering if we had the tech to bridge the gap of a few light hours to make it "home" Assuming of cou...
by Cobramaster
Mon Jan 10, 2011 11:24 pm UTC
Forum: Science
Topic: Insect/Arachnid Physiology
Replies: 11
Views: 3091

Re: Insect/Arachnid Physiology

Yay my insect physiology class has become relevant for a day. The basics of the muscular system in insects are identical to that of vertebrates, except for the attachments are made to the inside surfaces of the skeleton. To get a good macro model go buy some snow or king crab legs and carefully remo...
by Cobramaster
Sat Aug 21, 2010 7:25 am UTC
Forum: Science
Topic: rBGH in milk
Replies: 6
Views: 956

Re: rBGH in milk

Ok I am going to just clarify a few things from Velifer's post. The fat content in your milk is determined by the dairy not the cow but the ratio of saturated to unsaturated fat is fairly standard in all milkfat. As for cancer rates there are a handful other reasons for perceived increase. We have d...
by Cobramaster
Sat Aug 21, 2010 5:13 am UTC
Forum: Science
Topic: Is there a single celled (or very low cell count) creature..
Replies: 16
Views: 2547

Re: Is there a single celled (or very low cell count) creatu

Well to be fair until the male half of the various species went extinct they reproduced both ways. Now they actually have to have simulated sex in order for the reproduction to occur though no-one knows exactly why. So yes there are exclusively lesbian lizards out there, that reproduce only asexually.
by Cobramaster
Sun Aug 08, 2010 11:54 pm UTC
Forum: Individual XKCD Comic Threads
Topic: 0775: "Savannah Ancestry"
Replies: 461
Views: 83945

Re: "Savannah Ancestry" discussion (#775)

Time for today's free lesson in logical fallacies! Today: * A could potentially cause B, * B happened, * Therefore, A happened. So, you have a nice potential historical scenario that, if it was true, you reckon could explain some aspect of today's world. According to your theory, it "stands to...
by Cobramaster
Thu Aug 05, 2010 8:34 pm UTC
Forum: Science
Topic: Is it illegal to own a chemistry set in Texas?
Replies: 45
Views: 14888

Re: Is it illegal to own a chemistry set in Texas?

Wow I really violated the laws of science in Texas, not only did I own about half the list, but I also actively gathered paleontological and archaeological samples from areas before construction crews went in which is a federal and state crime.
by Cobramaster
Fri Jul 09, 2010 2:05 am UTC
Forum: Science
Topic: Origin of Life
Replies: 39
Views: 7514

Re: Origin of Life

It is possible to test aspects of the theory, such as RNA and Protein formation from a primordial soup of sorts, and even the membrane formation. But to test the entire theory start to finish it would take a very short few hundred years to the more reasonable, but long few hundred million years. Tha...
by Cobramaster
Fri Jun 18, 2010 2:13 am UTC
Forum: Science
Topic: Gas in a gas tank - constant pressure, why?
Replies: 16
Views: 3433

Re: Gas in a gas tank - constant pressure, why?

The equilibrium is formed due to the higher boiling point of propane under pressure which also is maintained by the partial pressure of the gaseous propane in the cylinder. Essentially the pressure in the container is the point at which propane becomes liquid at room temperature and this will remain...
by Cobramaster
Tue Jun 15, 2010 12:14 pm UTC
Forum: Science
Topic: Calculators
Replies: 15
Views: 1936

Re: Calculators

Graphing calculators are worthless if you are not using the graphing functions and many times they are actually harder to use than the Scientific calculators available, I use a Casio ES115 due to ease of use and the fact I do not have to buy batteries all the time since it has a built in recharging ...
by Cobramaster
Tue Jun 15, 2010 12:07 pm UTC
Forum: Science
Topic: Tunnel to earth's core with molten iron?
Replies: 65
Views: 7353

Re: Tunnel to earth's core with molten iron?

Well that and the majority of the iron on our surface used to be molten in the mantle and core. My biggest point of skepticism is the hole just seems a bit shallow to start I would think you would want a few miles less crust between you and the mantle to be successful, and before you start digging w...
by Cobramaster
Tue Jun 01, 2010 6:20 am UTC
Forum: Science
Topic: Science Conferences
Replies: 12
Views: 1725

Re: Science Conferences

Being a chemist I won't go to the majority of the conferences listed ever. But I have been to Pittcon, had an abstract accepted for an Oral presentation at the Southeast Meeting of the ACS but due to a last minute occurrence could not attend. I will give an Oral presentation at Pittcon next year and...
by Cobramaster
Mon May 24, 2010 10:43 am UTC
Forum: Science
Topic: Why Sex?
Replies: 13
Views: 2589

Re: Why Sex?

To be very blunt and to the point on answering the original question, the random recombination of genes in sexual reproduction both speeds evolution and increases the chance for the survival of a species in a relatively small number of generations. Asexual reproduction on the other hand can be faste...
by Cobramaster
Thu May 13, 2010 4:53 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

The point the study was trying to make was not based on heat islands it was based on NOAA's own criteria for establishing a viable temperature station and the error will not present itself as strongly at night if at all considering the majority of the interferences are heat reflectors and radiators ...
by Cobramaster
Tue May 11, 2010 8:20 pm UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

Yeah you do not see the difference between precision which the data has and accuracy which it does not. Accuracy trumps precision when you try to make a model and the number of readings cannot change that. Precision in a statistical sense is saying all of your measurements agree with each other, Acc...
by Cobramaster
Tue May 11, 2010 7:14 pm UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

Yet it forgets about the greatest greenhouse gas there is. H2O it has one of the highest radiative forcings and makes up the vast majority of the greenhouse gas in the atmosphere.
by Cobramaster
Tue May 11, 2010 5:23 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

My entire career choice is based on providing statistically sound information and I do not mix probability theory with statistics, and in the process of providing scientific evidence of something you give every source of error, and you include this in your data analysis, you also never ever make pre...
by Cobramaster
Tue May 11, 2010 4:54 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

just read this http://wattsupwiththat.files.wordpress. ... ring09.pdf

And the day I take scientific criticism from an English teacher is the day I die.
by Cobramaster
Tue May 11, 2010 3:38 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

I'm sorry but as an analytical scientist I just scream when I see this. Fixed that for you. Did you read the post you just replied to? Actually if you want to call in statistics you would have to throw the single degree out of the window when you follow your rules for significant figures so you wou...
by Cobramaster
Tue May 11, 2010 2:37 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

All of which have a 2 degree error and are trying to account for a .5 degree temperature change. Do you not see the problem of having more noise than the anomaly you are trying to measure. So that means the temperature could actually drop 1.5 degrees and you still think it increased. I'm sorry but a...
by Cobramaster
Tue May 11, 2010 2:02 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

Ok then what explains the 2 degree error in many of the stations, because honestly if the error in your readings is greater than the phenomena you wish to measure your data holds no water.
by Cobramaster
Tue May 11, 2010 12:39 am UTC
Forum: Science
Topic: Another global warming thread (split from recycling)
Replies: 86
Views: 9006

Re: Another global warming thread (split from recycling)

OK I stayed out of this discussion so far. But the very scientific studies that measure CO2 and temperature are so flawed in their design that none of the data can be truly taken seriously. When the primary CO2 readings are taken downwind of an active volcano your numbers will be high( Just look at ...
by Cobramaster
Sat May 08, 2010 7:37 pm UTC
Forum: Science
Topic: Electricity Question from Bear Grylls "Worst Case Scenario"
Replies: 10
Views: 2547

Re: Electricity Question from Bear Grylls "Worst Case Scenar

He simply mis-informed people in a way that would make them understand the level of danger. What really is going on is that the electricity going into the car can jump from the car into you up to 30 feet away due to the very large charge imbalance present in the area now.
by Cobramaster
Mon May 03, 2010 6:09 am UTC
Forum: Science
Topic: "Shape" of the universe (edge and center threads merged)
Replies: 73
Views: 8326

Re: "Edge" of the universe.

As best as we can tell the universe is in a big vast emptiness that if you were able to travel to the edge of the propagation of matter which is faster than the speed of light though it does not violate the laws of physics because space itself is expanding, but theoretically you will either hit a so...
by Cobramaster
Fri Apr 30, 2010 1:59 am UTC
Forum: Science
Topic: What determines the lifespan of an organism?
Replies: 32
Views: 3294

Re: What determines the lifespan of an organism?

My first post ITT. So why then does the cell have a finite life cycle after it can no longer divide? Or do you mean that once enough cells in a given tissue can no longer divide there's no longer a means of replacing cells that suffer damage, and therefore eventually the tissue degrades? The cell b...
by Cobramaster
Thu Apr 29, 2010 8:37 am UTC
Forum: Science
Topic: update me on evolution theory?
Replies: 23
Views: 2970

Re: update me on evolution theory?

All you need is a sufficiently quick-breeding organism. My wife, frex, did a Drosophila (fruit fly) class where she directed the evolution of a group of fruit flies by separating out ones with undesirable traits. The population at the end of the semester was qualitatively different than what she st...
by Cobramaster
Thu Apr 29, 2010 8:18 am UTC
Forum: Science
Topic: What determines the lifespan of an organism?
Replies: 32
Views: 3294

Re: What determines the lifespan of an organism?

Well you answered your question in your question IF: you remove external factors. Pending no disease, or injury kills you, your lifespan is determined by both the length of your telomeres and the number of times the cells of a vital organ divide, when the telomeres are gone the cell is left to finis...
by Cobramaster
Fri Apr 23, 2010 3:35 pm UTC
Forum: Science
Topic: Getting killed by a meteor
Replies: 19
Views: 2709

Re: Getting killed by an meteor

Ironicism wrote:So at the very least serious injury would most likely occur right?

Well if I remember correctly one woman that was hit only had a large bruise but the meteor hit her after going through the second story of her house.
by Cobramaster
Fri Apr 23, 2010 5:03 am UTC
Forum: Science
Topic: Getting killed by a meteor
Replies: 19
Views: 2709

Re: Getting killed by an meteor

Heat is not the major concern with a meteor Size, speed and where it hits you are the 3 that matter. A sufficiently large but slow meteor hitting you above the waist would pose serious threat to your life, any meteor larger than you will probably kill you far more often than not and cause a good bit...
by Cobramaster
Wed Apr 14, 2010 12:06 am UTC
Forum: Science
Topic: Chemistry|solution color trend
Replies: 13
Views: 2643

Re: Chemistry|solution color trend

No not really. without knowing the exact 50 solutions you are given.
by Cobramaster
Tue Apr 13, 2010 1:27 am UTC
Forum: Science
Topic: kinetics (or: ITT help joshz study for chem)
Replies: 16
Views: 1526

Re: kinetics (or: ITT help joshz study for chem)

The answer for this particular question is D and on the question about C being a 3 body collision that would be rare, it is merely a combustion reaction and you experience much more complex reactions every time you get in your car. And for B the atomic to molecular oxygen transition is spontaneous ...
by Cobramaster
Mon Apr 12, 2010 4:21 am UTC
Forum: Science
Topic: kinetics (or: ITT help joshz study for chem)
Replies: 16
Views: 1526

Re: kinetics (or: ITT help joshz study for chem)

The answer for this particular question is D and on the question about C being a 3 body collision that would be rare, it is merely a combustion reaction and you experience much more complex reactions every time you get in your car. And for B the atomic to molecular oxygen transition is spontaneous a...
by Cobramaster
Thu Apr 08, 2010 5:05 pm UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 153360

Re: public misconceptions

Ahh there are worse things to happen than creating a perfect temporary thread derailment, that was quite funny.

You may all resume normal discussion .... Now.
by Cobramaster
Tue Apr 06, 2010 12:58 pm UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 153360

Re: public misconceptions

I have to disagree with you, Excel is the only thing you can use once your data exceeds a few hundred individual points nothing can keep it properly organized. I have to disagree with you. Excel is nice and quick to get a view of some data, but it is a major drawback that it will only handle 32768 ...
by Cobramaster
Tue Apr 06, 2010 5:49 am UTC
Forum: Science
Topic: public misconceptions
Replies: 1073
Views: 153360

Re: public misconceptions

cheap and easy Except, it's not really easy - doing anything beyond plotting four datapoints without errors given, and excel gets horrible to work with. As soon as you're doing anything more complex than that there is most definitely tools better suited to the job - which are actually easier to use...
by Cobramaster
Tue Apr 06, 2010 5:35 am UTC
Forum: Science
Topic: Why is water used in nuclear reactors?
Replies: 29
Views: 3677

Re: Why is water used in nuclear reactors?

The full reason water is used is the ability to absorb stray neutrons becoming heavy water, and its specific heat which allows it to keep the rods at a manageable temperature, plus it is very cheap compared to the lead cooled systems without the risk of encasing the reactor.
by Cobramaster
Tue Apr 06, 2010 2:12 am UTC
Forum: Science
Topic: Favorite home experiments
Replies: 590
Views: 485593

Re: Favorite home experiments

I'm a high school teacher, so of course I have to try these out at home first. :D 1. Take a candle, light it and keep the match lit. Blow it out. Now quickly put the lit match into the smoke that comes off the wick. The flame from the match flows down the smoke (as long as it's not to far away) and...
by Cobramaster
Sun Apr 04, 2010 5:33 am UTC
Forum: Science
Topic: Liquids lighter than water and Water Rockets
Replies: 8
Views: 4275

Re: Liquids lighter than water and Water Rockets

Use very heavily salted water Fully Saturated would be a better term and it would be a tad more dense but still safe. Though the best soda bottle rocket is O2 gas and a few mLs of Methanol Oh and you need a lighter, and maybe ear protection.
by Cobramaster
Mon Mar 29, 2010 5:52 am UTC
Forum: Science
Topic: Sources of Inspiration
Replies: 23
Views: 2131

Re: Sources of Inspiration

No single source of inspiration that I can place a finger on but when my memory kicked in I was reading books about paleontology and ever since I have been pursuing the various sciences, to various degrees.
by Cobramaster
Sat Mar 27, 2010 2:49 am UTC
Forum: Science
Topic: Why can't RNA branch?
Replies: 5
Views: 1799

Re: Why can't RNA branch?

Also single stranded RNA is not found in that form by itself very long only when attached to an enzyme is it truly single stranded otherwise it quickly breaks down or bonds to itself and other strands that are available and complimentary. And the reason that RNA does not form the extra bonds that yo...

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