Search found 71 matches

by Cup of Dirt
Sat Oct 17, 2009 6:54 am UTC
Forum: Serious Business
Topic: Your moral eccentricities
Replies: 2
Views: 1861

Your moral eccentricities

Almost everyone agrees, at least in principle, on a few basic ethical principles. Don't harm others, don't steal, keep promises, stuff like that. But a lot of people also have "private" rules that they apply only to themselves. This could be a very strong injunction against something most ...
by Cup of Dirt
Wed Oct 14, 2009 2:36 am UTC
Forum: Serious Business
Topic: On gay pride parades
Replies: 40
Views: 5518

Re: On gay pride parades

Yeah, the statement, "Gay rights, gay marriage, and so on, won't affect straight marriages" is pretty vague. But that is the talking point -- "How can the fact that gay people are accepted conceivably affect your relationship?" "Why would you want to deny someone rights when...
by Cup of Dirt
Wed Oct 14, 2009 2:08 am UTC
Forum: Serious Business
Topic: On gay pride parades
Replies: 40
Views: 5518

Re: On gay pride parades

Michael Warner values the increased possibilities of the queer community. It's not the mean or the "norms" that are important, but instead of the range and the variation of behavior. Because behavior, including sexual behavior, is culturally constructed, having more options and possibilit...
by Cup of Dirt
Sun Oct 11, 2009 3:45 am UTC
Forum: Serious Business
Topic: Utopia.
Replies: 79
Views: 9422

Re: Utopia.

I think a little bit of struggle is important in a society. All my sentiments over notion of 'utopia' are largely ones of revulsion; the concept of universal equality is too much a Vonnegut short, the elimination of competition is too much a cop out, and the elimination of unemployment is simply fo...
by Cup of Dirt
Sat Oct 10, 2009 8:55 pm UTC
Forum: Mathematics
Topic: Euler's formula with Pauli matrices
Replies: 2
Views: 1647

Re: Euler's formula with Pauli matrices

Ah okay, thanks. That makes sense.

(At least I got some LaTeX practice)
by Cup of Dirt
Sat Oct 10, 2009 8:29 pm UTC
Forum: Mathematics
Topic: Random Question.
Replies: 7
Views: 1122

Re: Random Question.

If you identify probabilities with measures (as is generally done), and require your probability measure to be "uniform" - i.e. the probability of ending up in an interval should depend only on the size of the interval, and not it's location - then you will find there is no way to choose ...
by Cup of Dirt
Sat Oct 10, 2009 8:14 pm UTC
Forum: Mathematics
Topic: Euler's formula with Pauli matrices
Replies: 2
Views: 1647

Euler's formula with Pauli matrices

This is actually a homework problem for my QM class, but it's pretty much pure math, so I figured I'd put it here. I have to prove the identity: \exp{(i \vec{\sigma} \cdot \hat{n} \theta)} = I \cos \theta + i \vec{\sigma} \cdot \hat{n} \sin \theta where \vec{\sigma} is the Pauli vector, with...
by Cup of Dirt
Thu Oct 08, 2009 4:30 am UTC
Forum: Serious Business
Topic: Religion: The Deuce
Replies: 5301
Views: 601514

Re: A Question of Evidence: Aliens vs. God

One of the big things is that there's very little to no contemporary non-Christian evidence that Jesus existed. No one that said, "Oh dude check it out, there's this guy who's turning water to wine, holy shit that's fucking crazy". You'd think that would happen, if we're to believe the mi...
by Cup of Dirt
Fri Oct 02, 2009 5:45 am UTC
Forum: General
Topic: How to respond to people who use "gay" pejoratively
Replies: 122
Views: 14987

Re: How to respond to people who use "gay" pejoratively

Okay, so I lied about the finally, I have two small endnotes: First, words can mean more than on thing(cleave is a particularly weird example). When I use gay as a pejorative, it has nothing at all to do with homosexuality. There's where your argument falls apart. Some words do have two different, ...
by Cup of Dirt
Fri Sep 25, 2009 6:08 am UTC
Forum: Serious Business
Topic: Crime and Punishment: What Criminals Deserve
Replies: 171
Views: 24653

Re: Crime and Punishment: What Criminals Deserve

Here's an angle no one has mentioned. Let's say we adopt a philosophy that subjecting someone to punishment by the criminal justice system should only be done for pragmatic reasons, not because the person deserves it. Doesn't that allow us to punish people who have committed no crime as long as the...
by Cup of Dirt
Fri Sep 25, 2009 1:31 am UTC
Forum: Serious Business
Topic: Crime and Punishment: What Criminals Deserve
Replies: 171
Views: 24653

Re: Crime and Punishment: What Criminals Deserve

Here's an angle no one has mentioned. Let's say we adopt a philosophy that subjecting someone to punishment by the criminal justice system should only be done for pragmatic reasons, not because the person deserves it. Doesn't that allow us to punish people who have committed no crime as long as ther...
by Cup of Dirt
Thu Sep 24, 2009 5:08 am UTC
Forum: Movies and TV Shows
Topic: Defying Gravity (TV series)
Replies: 48
Views: 6501

Re: Defying Gravity (TV series)

What do you mean by like this? Scifi, doing things in flash backs, having to wait until the end of the season to get any sort of answers? Lmao! No I sorta meant like scifi but since I'm new to this genre I don't want anything too deep. :D Well, they did have a show a couple of years ago about a gro...
by Cup of Dirt
Sun Sep 13, 2009 4:34 am UTC
Forum: Science
Topic: Units
Replies: 24
Views: 3556

Re: Units

I think those numbers should be the same. But, to answer your question, it's pretty much the same thing with more complicated units. For example, a Newton-meter (also known as a Joule) is a unit of energy, or work. So you have done one Joule of work if you exert a constant force of one Newton on an ...
by Cup of Dirt
Thu Sep 10, 2009 7:27 am UTC
Forum: News & Articles
Topic: Obama's 9/9 Healthcare speech to US Congress
Replies: 111
Views: 7105

Re: Obama's 9/9 Healthcare speech to US Congress

My favorite moment: 4th link, around 6:00. Obama mentions medical malpractice reform, at which he gets a rare standing ovation from the Republican side. The applause goes on for an uncomfortable length of time, and the president's just looking over, going, yeah, I get it, you're applauding so loud a...
by Cup of Dirt
Wed Sep 09, 2009 6:23 am UTC
Forum: Science
Topic: Carnot limit of a solar cell
Replies: 30
Views: 6160

Re: Carnot limit of a solar cell

But, for solar cells on earth, what matters isn't the difference between earth and sun, but between earth and the average temperature of the sky (Averaged by surface area). This brings down the temperature of the hot end and drops the max efficiency to somewhere around 70%, or so my previous link a...
by Cup of Dirt
Sun Sep 06, 2009 7:00 pm UTC
Forum: Science
Topic: Carnot limit of a solar cell
Replies: 30
Views: 6160

Re: Carnot limit of a solar cell

The 33% limit only applies to single-junction, bulk semiconductor solar cells. The efficiency is limited because incoming photons below the bandgap energy aren't absorbed at all, and photons above the bandgap energy produce high-energy electron-hole pairs, which radiate phonons (heat) until they fal...
by Cup of Dirt
Sun Sep 06, 2009 6:09 am UTC
Forum: Science
Topic: Carnot limit of a solar cell
Replies: 30
Views: 6160

Carnot limit of a solar cell

Couldn't find anything about this on Wikipedia, so I figured I'd ask here. First off I'm wondering if a solar cell is subject to the Carnot limit of the efficiency of a heat engine, \eta =1 - \frac{T_L}{T_H} where \eta is the maximum efficiency of a heat engine, and T_{L(H)} is the temperatu...
by Cup of Dirt
Sat Aug 29, 2009 6:59 am UTC
Forum: Movies and TV Shows
Topic: Lie to Me
Replies: 20
Views: 2765

Re: Lie to Me

I like the show, but I can see what you're saying. The writing and acting are average at best. For me, it doesn't matter, because the premise is so awesome. This is a group of people who have hacked human behavior. And it's real; like others have mentioned, Lightman is based on a real guy. I'm sure ...
by Cup of Dirt
Mon Aug 24, 2009 6:49 am UTC
Forum: Science
Topic: teaching myself calculus (for application in Physics)
Replies: 5
Views: 1469

Re: teaching myself calculus (for application in Physics)

You probably just need to read the Wikipedia articles on limits, derivatives and integrals , in that order. Make sure you get the concepts, which very easy to understand, but don't worry about the formal mathematical details. I would say it would be a good start to understand the concepts, and then ...
by Cup of Dirt
Sat Aug 22, 2009 8:41 pm UTC
Forum: Serious Business
Topic: Looking for evidence - Male/female differences
Replies: 266
Views: 34050

Re: Looking for evidence - Male/female differences

The only times I've ever seen women surreptitiously attached into a combat role is when a female interpreter is needed, or when a female soldier is needed to search local national women. And even then, the 'combat role' is oppressively over-hyped. I've seen one female MP conduct a 'raid' on a few h...
by Cup of Dirt
Sat Aug 22, 2009 4:29 pm UTC
Forum: Serious Business
Topic: The Problem with lack of Inflation
Replies: 12
Views: 2186

Re: The Problem with lack of Inflation

So Inflation is evil. It means that money that isn't being invested (such as that belonging to someone who lives hand-to-mouth) is reduced in value, while money that is being invested doesn't lose value, and thus it acts as a regressive pressure on the economic system. I don't know if this is true....
by Cup of Dirt
Wed Aug 19, 2009 4:14 am UTC
Forum: Serious Business
Topic: Looking for evidence - Male/female differences
Replies: 266
Views: 34050

Re: Looking for evidence - Male/female differences

Speaking of women in the military, the NY Times had an article a few days ago: link. From the article: Their success, widely known in the military, remains largely hidden from public view. In part, this is because their most challenging work is often the result of a quiet circumvention of military p...
by Cup of Dirt
Tue Aug 11, 2009 4:43 am UTC
Forum: Science
Topic: The moon
Replies: 14
Views: 2529

Re: The moon

Wow. So the moon is being sped up by the earth/tide? Really? It's stealing energy from the system? Could we use this for launching things into orbit? (very slowly ;) ) Yup. Angular momentum is slowly being bled from the Earth's rotation into the moon's orbital motion. Very slowly is right, though; ...
by Cup of Dirt
Mon Aug 10, 2009 6:24 am UTC
Forum: Music
Topic: Worst song lyrics
Replies: 332
Views: 60807

Re: Worst song lyrics

cause song lyrics have to be in sentences to be good i bet you're the type of person who doesn't get poetry either Okay, I phrased it wrong. Sentences aren't necessary. But "We Didn't Start the Fire" is just... a list. Of semirandomly chosen topics from recent history, with no apparent co...
by Cup of Dirt
Mon Aug 10, 2009 6:10 am UTC
Forum: School
Topic: How difficult is it to get into MIT?
Replies: 32
Views: 5422

Re: How difficult is it to get into MIT?

nbonaparte1 wrote:This is only vaguely related, but University of Waterloo is a pretty decent school in Canada for anyone aspiring to go somewhere like MIT.


Ha! He recommends Waterloo...
by Cup of Dirt
Mon Aug 10, 2009 4:42 am UTC
Forum: Science
Topic: The moon
Replies: 14
Views: 2529

Re: The moon

Have you heard about the effect of tides on the orbit of the moon? The tidal bulge on Earth points toward the moon, but the Earth is rotating faster than the moon is orbiting (1 day > 28 days), so the bulge is always "in front" of the moon. This has two effects -- one is that the rotation ...
by Cup of Dirt
Sun Aug 09, 2009 10:05 pm UTC
Forum: Music
Topic: Worst song lyrics
Replies: 332
Views: 60807

Re: Worst song lyrics

True. Okay, I'll concede that Billy Joel has some skill, but I still assert that he is a jerk.

And "We Didn't Start the Fire" is still a strong candidate for Worst Lyrics in the sense that the OP meant.
by Cup of Dirt
Sun Aug 09, 2009 6:18 pm UTC
Forum: General
Topic: I Shouldn't Have To Say This
Replies: 2609
Views: 397015

Re: I Shouldn't Have To Say This

"Welcome to Facebook, Grandma."

No one should ever have to say that.
by Cup of Dirt
Sun Aug 09, 2009 5:05 pm UTC
Forum: Music
Topic: Worst song lyrics
Replies: 332
Views: 60807

Re: Worst song lyrics

We Didn't Start The Fire rocks, I second aaron. Well, the melody's annoying, but probably not the worst of all time. But we're talking about the worst song lyrics, and, WDSTF has no actual sentences except in the refrain. It's just a list of random events from recent history. It gives you the illus...
by Cup of Dirt
Sun Aug 09, 2009 12:22 am UTC
Forum: School
Topic: Undergrad: Does location matter?
Replies: 7
Views: 1547

Re: Undergrad: Does location matter?

It seems to me that the whole university thing is a lot of who you know, and what you did outside of school rather than how you did in school. Yeah, it is kind of like that. Mostly because everyone applying to a half-decent grad school for a PhD in physics has identically near-perfect grades, so th...
by Cup of Dirt
Sat Aug 08, 2009 7:25 pm UTC
Forum: Science
Topic: A small inferior Q
Replies: 4
Views: 914

Re: A small inferior Q

Yeah, the moon orbits very slowly, but if you anchored the space elevator on the side facing the Earth, Earth's gravity would help hold it "up," so it could be shorter than you'd expect for just the moon in isolation. Wikipedia says such an elevator would have to be 50,000 kilometers long,...
by Cup of Dirt
Sat Aug 08, 2009 7:04 pm UTC
Forum: School
Topic: Undergrad: Does location matter?
Replies: 7
Views: 1547

Re: Undergrad: Does location matter?

Yeah, and how you did in high school becomes largely irrelevant once you're in college. The thing is, you have to get into college first. How you did in undergrad similarly affects your chances of getting into a good grad school. That means you have to have mastered challenging coursework, and have ...
by Cup of Dirt
Sat Aug 08, 2009 8:26 am UTC
Forum: Music
Topic: Worst song lyrics
Replies: 332
Views: 60807

Re: Worst song lyrics

How did the thread get four pages without someone mentioning We Didn't Start the Fire? Or does "anything by Billy Joel" just go without saying?
by Cup of Dirt
Sat Aug 08, 2009 8:00 am UTC
Forum: General
Topic: Twitter withdrawal, or; READ A FUCKING BOOK
Replies: 17
Views: 2355

Re: Twitter withdrawal, or; READ A FUCKING BOOK

And internet forums too. Don't forget them.
by Cup of Dirt
Wed Aug 05, 2009 3:33 am UTC
Forum: Movies and TV Shows
Topic: Defying Gravity (TV series)
Replies: 48
Views: 6501

Re: Defying Gravity (TV series)

Oh man, it's almost violently bad. The tagline is "Grey's Anatomy in space," I guess to give you fair warning. Here's a sample, so you don't have to experience it directly. Female Astronaut* 1 (referring to Ron Livingston's character): He was making a pass at you! Female Astronaut 2: He's ...
by Cup of Dirt
Tue Aug 04, 2009 4:49 pm UTC
Forum: General
Topic: Lucky Ten Thousand (TIL)
Replies: 13427
Views: 1772178

Re: Today I Learned

Today I learned that a "deck mop" is a mop you can't wring water out of, which is why it's slightly cheaper than regular mops. I also learned that to get an inside floor dry in any reasonable amount of time, you need a mop with a wringer. In general, I learned that if you're in a store loo...
by Cup of Dirt
Sun Aug 02, 2009 11:19 pm UTC
Forum: Movies and TV Shows
Topic: River Tam VS Cameron Phillips
Replies: 20
Views: 7325

Re: River Tam VS Cameron Phillips

The OP wrote:River Tam VS Cameron Phillips


I'll be in my bunk.
by Cup of Dirt
Sun Aug 02, 2009 4:50 pm UTC
Forum: General
Topic: I Shouldn't Have To Say This
Replies: 2609
Views: 397015

Re: I Shouldn't Have To Say This

Gojoe wrote:That last one shocks me cup.


You're not the only one.
by Cup of Dirt
Sun Aug 02, 2009 4:22 pm UTC
Forum: General
Topic: I Shouldn't Have To Say This
Replies: 2609
Views: 397015

Re: I Shouldn't Have To Say This

"It's a good idea to own a broom."

"Spaghetti is not the only type of pasta."

"No, all things considered, I do think school shootings are bad."
by Cup of Dirt
Sun Aug 02, 2009 4:05 pm UTC
Forum: Science
Topic: Why is there no "center" of the universe?
Replies: 60
Views: 8153

Re: Why is there no "center" of the universe?

There may very well exist higher dimensions, but there may not as well. You can have curved space without embedding it in a higher dimension. You are used to live in an almost-euclidean three dimensional space, so you can imagine curved two dimensional surfaces because you know the third. You can t...

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