Search found 65 matches

by DarkLordofSquirrels
Sun Jul 24, 2011 6:39 am UTC
Forum: Science
Topic: Enzymes
Replies: 2
Views: 896

Enzymes

My nerd homies and myself are drinking, and we've got a puzzle we can't figure out. Do proteases in the digestive tract digest themselves? If so, by what mechanism is the protease self-digestion slowed compared to digestion of other proteins? The best we've got is that the enzymes have some kind of ...
by DarkLordofSquirrels
Tue Jul 19, 2011 7:12 am UTC
Forum: School
Topic: Contacting potential PIs
Replies: 7
Views: 2629

Re: Contacting potential PIs

This looks great man, thanks for the input. What if I'm totally changing fields and haven't really done anything in terms of related, accredited study? My undergrad was in physics, and I'm applying for bioengineering programs. I'm signed up to take a bunch of bio courses in the fall, but probably th...
by DarkLordofSquirrels
Sun Jul 17, 2011 9:35 pm UTC
Forum: School
Topic: Contacting potential PIs
Replies: 7
Views: 2629

Contacting potential PIs

DId a search on this but I couldn't find anything. I'm applying to grad school this Fall, and everyone's saying the best way to start is establish correspondence with the guy I'm interested in working with. I've got a few helpful recommendations on what needs to go into the initial contact: general ...
by DarkLordofSquirrels
Sun Sep 26, 2010 7:34 am UTC
Forum: Science
Topic: Robotics/Electronics projects for myself and my 7yr old son
Replies: 14
Views: 1909

Re: Robotics/Electronics projects for myself and my 7yr old

-Make an electromagnet with copper wire, battery and a bit of iron -Make a plate capacitor and fry fire ants with it. That's assuming you live near some; but if you do they frickin' love electricity. Grab a couple of square foot metal plates, hold 'em close and run some charge through them and they'...
by DarkLordofSquirrels
Mon Aug 09, 2010 3:42 pm UTC
Forum: School
Topic: Engineering school vs general science/liberal artsy?
Replies: 10
Views: 2304

Re: Engineering school vs general science/liberal artsy?

I've just graduated from a liberal arts school with a physics degree, and while it's definitely got ups and downs, I wouldn't trade it for anything. More than just receiving technical career training, I can really say the University was my alma mater. But it's definitely rougher for the sciences. I'...
by DarkLordofSquirrels
Thu Apr 01, 2010 7:24 pm UTC
Forum: School
Topic: Foreign Degrees
Replies: 1
Views: 792

Foreign Degrees

For all of you out there who have been on faculty selection committees... I've heard that lots of American schools don't really like to hire professors with foreign degrees. I'd like eventually to get a job as a professor in the US, but I got into the University of Heidelberg for grad school and I'd...
by DarkLordofSquirrels
Thu Apr 30, 2009 6:32 am UTC
Forum: The Help Desk
Topic: Recovery off a flash drive
Replies: 1
Views: 408

Recovery off a flash drive

I was working on a paper (that happens to be due in 12 hours), and the Word file closed itself. I looked on my flash drive where the file was saved to reopen it, and it was gone. I haven't saved anything onto the drive or anything since it happened. I know there's a way to recover the data, but I ha...
by DarkLordofSquirrels
Tue Apr 07, 2009 4:40 am UTC
Forum: Science
Topic: Academic Careers in Cosmology
Replies: 5
Views: 1541

Academic Careers in Cosmology

Hi there xkcd. So I'm a junior physics major, and I've been working for the past year thinking I'd go on to get a PhD in cosmology. Then today, my main professor let slip that not only is there no research money for PhD students, there's also no grant money for academic cosmology professors. I had a...
by DarkLordofSquirrels
Fri Aug 08, 2008 9:41 am UTC
Forum: Science
Topic: Black Hole Sun
Replies: 36
Views: 4688

Re: Black Hole Sun

Correct. There's a fun little thought experiment where you place a big circular tunnel around a black hole, and hold a lantern while you walk through it. Because gravity will curve the light in a circle, you'll be able to see your own back in front of you.
by DarkLordofSquirrels
Thu Aug 07, 2008 12:15 pm UTC
Forum: Science
Topic: Big Bang theory says universe was dense. Where black hole?
Replies: 13
Views: 1877

Re: Big Bang theory says universe was dense. Where black hole?

A possible reason is that it did, and we just haven't observed it. But remember, not only was the matter expanding within space, the space was/is also expanding. So, summing the speeds, it was possible for things to move away from each other at speeds greater than c, so faster than the gravitational...
by DarkLordofSquirrels
Thu Aug 07, 2008 9:07 am UTC
Forum: Science
Topic: What do you think we will see at the LHC?
Replies: 160
Views: 20762

Re: Question about the Large Hadron Collider

But when you're getting in the way of the beam in the first place, you'll move across the beam. And unless it's an arm or a leg, I can't think of a convenient place to punch a hole right through a human without dire consequences. :-P. All the nerves in the left side of that Russian dude's face got c...
by DarkLordofSquirrels
Tue Aug 05, 2008 5:30 pm UTC
Forum: Science
Topic: Thomas Campbell's TOE
Replies: 103
Views: 47069

Re: Thomas Campbell's TOE

He's scientifically and logically AND mathematically deduced not only a physical theory of everything, but also the meaning of life, and written it up in terms a layman can understand for only $29.95! Dude's full of shit. I normally enjoy reading books of that type, but it's an affront to modern sci...
by DarkLordofSquirrels
Fri Aug 01, 2008 12:53 pm UTC
Forum: Science
Topic: Photons and gravity...
Replies: 6
Views: 1442

Re: Photons and gravity...

But photons also lose energy when exiting a gravity well, meaning they feel a force, meaning gravity is acting on them. I don't know enough GR to be certain, but I believe it's because E=mc2 - because energy and matter are "the same," the field acts on the photon's ENERGY.
by DarkLordofSquirrels
Fri Aug 01, 2008 11:52 am UTC
Forum: Science
Topic: [Physics] Collision point of two moving objects
Replies: 7
Views: 1398

Re: [Physics] Collision point of two moving objects

You've got it right (except since you want x final to be the same in both cases, you don't need to do all that dividing and subtracting one business). It is, in fact, very useful - that equation right there will tell you when and where your bullet (fired in the x direction) will hit the enemy (runni...
by DarkLordofSquirrels
Fri Aug 01, 2008 9:27 am UTC
Forum: Science
Topic: [Physics] Collision point of two moving objects
Replies: 7
Views: 1398

Re: [Physics] Collision point of two moving objects

Kinematics will help you out: x final = x initial +v initial *t + at 2 I'm assuming the acceleration is zero, so the last term will drop, giving you a pretty easy equation. You'll have two equations, one for the enemy and one for the bullet, so you equate them to solve for t and then solve for x fin...
by DarkLordofSquirrels
Thu Jul 31, 2008 7:25 pm UTC
Forum: Serious Business
Topic: Self medication
Replies: 24
Views: 3484

Re: Self medication

Using it as a social lubricant is an escape - it is an escape from your inhibitions and shyness. It makes you act (in your mind at least) more like those beautiful people I mentioned and thus provides an escape from the more complex, but less confident, person you are. It is corrective of your inhi...
by DarkLordofSquirrels
Thu Jul 31, 2008 3:21 pm UTC
Forum: Serious Business
Topic: Self medication
Replies: 24
Views: 3484

Re: Self medication

Come on, he raised a valid question with valid motives. Doesn't mean they're the only ones. That said, nobody says we're the apex of humanity, for the same reason they take drugs (of the mindstate-altering variety, anyway): the present is boring and not good enough. *shrug* I have some caffeine when...
by DarkLordofSquirrels
Thu Jul 31, 2008 2:29 pm UTC
Forum: Science
Topic: How easy does gasoline burn?
Replies: 21
Views: 4951

Re: How easy does gasoline burn?

Maybe you can tell what this guy is saying about it: http://www.youtube.com/watch?v=dOdQm0APQWk . If he's saying you put that foil thing in the tank and close the lid, it'll stop burning, he's right, but it's definitely not with any help from the foil. Xplo Protect looks like a total ripoff to me. I...
by DarkLordofSquirrels
Thu Jul 31, 2008 1:26 pm UTC
Forum: Science
Topic: How easy does gasoline burn?
Replies: 21
Views: 4951

Re: How easy does gasoline burn?

Can you give us the name (and possibly a website) for this "anti-explosive"?

Gasoline burns very easily of course, and putting a match in the tank WOULD set it on fire... if the tank was fairly empty, and if the cap were left off. And if there were no air valve in the gas intake.
by DarkLordofSquirrels
Wed Jul 30, 2008 12:27 pm UTC
Forum: Science
Topic: Graduate Program help!
Replies: 39
Views: 4296

Re: Graduate Program help!

My subject is physics, and my record is pretty good. It is my judgment I worry about :-P. And so I want to apply to more "reach" schools. I feel like I have a good chance of getting in, but that the chance is magnified if I apply to more... but I don't want to throw caution to the winds an...
by DarkLordofSquirrels
Wed Jul 30, 2008 11:00 am UTC
Forum: Science
Topic: Graduate Program help!
Replies: 39
Views: 4296

Re: Graduate Program help!

While we're on the subject, about how many schools is it advisable to apply to? Is it like colleges, where you do 3-4 "reach" schools, 3-4 mid-schools, and 2-3 shoo-ins? Or might this affect your chances, due to departments talking about their applicants or something? I'd kinda like to app...
by DarkLordofSquirrels
Tue Jul 29, 2008 12:49 pm UTC
Forum: Science
Topic: Magic as a form of energy (fantasy project)
Replies: 37
Views: 4174

Re: An interesting challenge, perhaps.

If you don't understand something weird, it's Magic. The moment you understand it, it morphs into Science. It's not even a technology thing. I can make things levitate, disappear, and burst into flames with a tap using science. It's a bit more mundane these days than magic, but it's really the same ...
by DarkLordofSquirrels
Fri Jul 25, 2008 10:11 pm UTC
Forum: Serious Business
Topic: Vegetarianism
Replies: 1
Views: 1185

Vegetarianism

Wasn't sure where to put this - it's mostly a health topic, but there's not really a health forum :-P. So I've been thinking of going veggie for a while now. The reasons are many and include: -Supposedly healthier (if you balance your proteins from other sources) -The way slaughter animals are broug...
by DarkLordofSquirrels
Thu Jul 24, 2008 1:15 pm UTC
Forum: Science
Topic: focused temperature / maxwell's demon
Replies: 9
Views: 1746

Re: focused temperature / maxwell's demon

Haha, and I was going to say that it wouldn't hold for any measurable time, because they transfer energy to each other. I think you've pretty well answered your own question.
by DarkLordofSquirrels
Wed Jul 23, 2008 10:33 pm UTC
Forum: Science
Topic: Suggestions for a *simple* electronics project
Replies: 13
Views: 1606

Re: Suggestions for a *simple* electronics project

Would you provide a diagram? :-P I'd say a simple little radio receiver, but if it took that long to explain a light switch... I can't really think of anything remotely interesting with less than ten or so components.
by DarkLordofSquirrels
Wed Jul 23, 2008 4:42 pm UTC
Forum: Science
Topic: Terra-forming Technologies
Replies: 19
Views: 2129

Re: Terra-forming Technologies

I'd just like to point out that without humans there actively "gardening" the new ecosystem, there's absolutely no way to make sure that life doesn't develop in the "wrong" way. Magnetosphere. That's what I forgot. Anyways, on reflection, maybe we could start with just terraformi...
by DarkLordofSquirrels
Wed Jul 23, 2008 4:13 pm UTC
Forum: Science
Topic: Terra-forming Technologies
Replies: 19
Views: 2129

Re: Terra-forming Technologies

Yes, but how long will it take to get to it? And odds are, it will need some terraforming, too. In fact, as I mentioned earlier, we need soil for our brave new world, which won't be there unless there's also already life there. If there's already life there, then we'll almost certainly face an exo-e...
by DarkLordofSquirrels
Wed Jul 23, 2008 3:01 pm UTC
Forum: Science
Topic: How to ship energy from Alpha Centauri
Replies: 39
Views: 3713

Re: How to ship energy from Alpha Centauri

So how do they solve the problem up to satellites? It's refocused with a parabolic reflector!

I say, therefore, a laser and one REALLY BIG lens with a 4.37 ly focal length.
by DarkLordofSquirrels
Wed Jul 23, 2008 2:44 pm UTC
Forum: Science
Topic: Terra-forming Technologies
Replies: 19
Views: 2129

Re: Terra-forming Technologies

I can't imagine a fluorine atmosphere appearing anywhere. *Maybe* if local life produced it as waste in respiration. But F 2 is so unstable, it's probably go to work on the rocks if it couldn't do anything else first. *shurg* So maybe chlorine, or H 2 S. I guess this just shows that terraforming met...
by DarkLordofSquirrels
Tue Jul 15, 2008 3:07 pm UTC
Forum: School
Topic: After majoring in science..?
Replies: 7
Views: 1473

Re: After majoring in science..?

I plan on academia or medschool. Do you count NASA as academia, by the way? That's definitely real math and science, but consisting of well-defined tasks instead of hazy research goals. And also with the aim of wider applications than the academic. Most of the other guys in my physics department are...
by DarkLordofSquirrels
Tue Jul 15, 2008 2:56 pm UTC
Forum: Science
Topic: Variance in Human Senses
Replies: 18
Views: 4264

Re: Variance in Human Senses

Nah, I always come out of the optometrist seeing better, but not to face recognition at 30 meters. My eyes are just below average :(. But I can see well enough up close to do math and make out, so I can't complain too much ;)
by DarkLordofSquirrels
Tue Jul 15, 2008 2:14 pm UTC
Forum: Science
Topic: Variance in Human Senses
Replies: 18
Views: 4264

Re: Variance in Human Senses

Humans vary greatly in just about every aspect, including sense. There's some sexual dimorphism: men can (on average) see slightly finer details than women; women can (on average) hear and distinguish smells better than men. Touch, by the way, is now divided into I think four different areas: pressu...
by DarkLordofSquirrels
Thu Jul 03, 2008 8:02 am UTC
Forum: Science
Topic: The missing mass of nucleii
Replies: 12
Views: 2033

Re: The missing mass of nucleii

No- but mass-energy is conserved.The internal energy of an object is given by E=mc^2, which for a macroscopic object, includes all the internal kinetic energy of its constituent molecules/particles. If you cool down an object, its internal energy goes down and its mass drops. I'm not sure what you m...
by DarkLordofSquirrels
Wed Jul 02, 2008 9:00 am UTC
Forum: Science
Topic: Physics Tattoo Ideas
Replies: 63
Views: 17833

Re: Physics Tattoo Ideas

Hehe, that's why tattoo parlors hire so many kids with math degrees.
by DarkLordofSquirrels
Wed Jul 02, 2008 8:54 am UTC
Forum: Science
Topic: Physics Tattoo Ideas
Replies: 63
Views: 17833

Re: Physics Tattoo Ideas

Gelsamel wrote:
Mr. Beck wrote:e+1=0


Fixed.

Fixed again.
by DarkLordofSquirrels
Wed Jul 02, 2008 12:45 am UTC
Forum: Science
Topic: Eating Chalk?
Replies: 38
Views: 14341

Re: Eating Chalk?

It LOOKS like calcium carbonate, but if you examine the crystal structure better, you'll find that it's actually made of ALIENS. ALIENS are organic, and insoluble in polar solution such as water. The chalk will form an organic phase in your stomach, which will give you cancer, and then you will die....
by DarkLordofSquirrels
Tue Jul 01, 2008 6:43 pm UTC
Forum: Science
Topic: Physics Tattoo Ideas
Replies: 63
Views: 17833

Re: Physics Tattoo Ideas

I saw this dude who had the greek letter pi at the base of his neck, then three dots under it, one under that, four under that, and so on all the way down his spine. It was pretty neat. The other one I really liked was a golden rectangle tattoo. How about Maxwell's equations? That'd be a spiffy thin...
by DarkLordofSquirrels
Tue Jul 01, 2008 11:40 am UTC
Forum: Science
Topic: Beginner particle question about leptons
Replies: 16
Views: 2351

Re: Beginner particle question about leptons

That still doesn't make sense to me yet. For an example, let's say tau lepton -> electron + electron anti-neutrino + tau neutrino The word "transformed" still doesn't make sense because the lepton, a fundamental particle, is still becoming 3 different, smaller masses. This means the tau l...
by DarkLordofSquirrels
Wed Jun 25, 2008 12:23 pm UTC
Forum: Science
Topic: The Ten Commandments
Replies: 15
Views: 2994

Re: The Ten Commandments

"Thou shalt not travel faster than c" should be generalized to "Thou shalt not say ye frame of reference is any better or worse than ye neighbors frame, if they both be inertial." It's clunkier, but it says everything.

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