hblask 1 Posted May 20, 2009 Share Posted May 20, 2009 Wow, I am embarrassingly bad at that. It turns out that "earth", "wind" and "fire" are not on there. Sigh.I have a t-shirt with that chart on it (yes, that's how nerdy I am, I also have a pi t-shirt), I should've done better.I am proud that I got Seaborgium, though. I got about 24 before I gave up. Link to post Share on other sites
LongLiveYorke 38 Posted May 20, 2009 Share Posted May 20, 2009 Saw this and thought of you.http://www.sporcle.com/games/elements.phpNot a math question, but I'd be interested to know your scores anyway. (You enter the name, not the symbol btw)Well, I've memorized the first 20, so I can get those. After that, I can get the obvious ones, like gold and silver, and the fun ones like uranium, plutonium, and einsteinium, but I don't think I'd do particularly well. I'm not really a chemist.To me, the periodic table of the elements should go: 1 proton, 2 protons, 3 protons, ... etcEdit: I got 40 in about 5 minutes and got bored and gave up. Really, I get 20 in about 30 seconds and then spent the rest of the time thinking of people's names or places that have become elements: Curium, Bohrium (I totally guessed at that one and it actually turned out to be an element, lol), Einsteinium, Californium, Germanium, Americium, etc Link to post Share on other sites
strategy 4 Posted May 20, 2009 Share Posted May 20, 2009 I remember how people would bring their own copy of the periodic table of elements to chem exams in high school with equations written on them. the teacher never caught on, I guess.all of the rooms used for chem exams at KU have the table painted on both walls. of course, now that exams are administered in auditoriums, you can just sit in a V formation and have two people easily looking at the smart person's exam from behind and over his shoulder. Link to post Share on other sites
ROACHBABY 0 Posted May 20, 2009 Share Posted May 20, 2009 Can you figure this out? I am lost.....It is a girls birthday in two days. She was 19 on Jan, 1 last year. She is 21 about to turn 22, when is her birthday? Link to post Share on other sites
LongLiveYorke 38 Posted May 20, 2009 Share Posted May 20, 2009 It is a girls birthday in two days. She was 19 on Jan, 1 last year. She is 21 about to turn 22, when is her birthday?In two days.I don't get it. Is this a real question or a riddle? Link to post Share on other sites
Tactical Bear 3 Posted May 20, 2009 Share Posted May 20, 2009 Can you figure this out? I am lost.....It is a girls birthday in two days. She was 19 on Jan, 1 last year. She is 21 about to turn 22, when is her birthday?January 2nd.Previous calender year, she was 19 on January 1. She is now 21. She must have turned 20 last year, and then 21 this year. Her birthday can't be on JAN 1, obviously, because then she'd be 19 last year, and only 20 this year. It is currently December 31st. In two days it will be January 2nd, and she'll turn 22. Let me know if that doesn't make sense.EDIT- I am sick, so I can barely think, but the easiest way to think about it is:Last year she was 19 and turned 20. This year she was 20 and turned 21. Next year she's be 21 turning 22. If her birthday is in two days, then it must be NEXT YEAR in two days. We already showed it couldn't be on January first, so her birthday is the second. A fun addendum: It's even more fun to ask the question, "How many days ago was Christmas?" That'd blow some people's mind. Link to post Share on other sites
El Guapo 8 Posted May 26, 2009 Share Posted May 26, 2009 I just saw that Thom Yorke is only 5 foot 4 inches tall. I thought he was a guy? Link to post Share on other sites
LongLiveYorke 38 Posted May 26, 2009 Share Posted May 26, 2009 I just saw that Thom Yorke is only 5 foot 4 inches tall. I thought he was a guy?I guess I never really thought about it. I've seen him in concert many times up close and you don't notice it at all. Link to post Share on other sites
Jelly-Filled Ace 1 Posted May 28, 2009 Share Posted May 28, 2009 ok, the lady shooting Craps made a big splash in the news by holding the dice for over 4 hours. An incredible feat breaking a 20-year old record. The casino tallied her consecutive roll total.She made 154 rolls without 'sevening out'. I have no math savvy so I don't know if it's correct to say I'm asking for you to compute the odds of probability or occurrence but I would be interested in knowing what the odds are for her feat?30 combinations work for anything but a 7 to be rolled, 6 combinations create the 7 that ends the game - which she avoided 154 times.This has to be a mind-blowing number, one would think.Thanks.**Edit: It's assumed these were legal, casino dice, too. Otherwise if 'loaded' dice were used, we would be reading about her obituary instead of this record. Link to post Share on other sites
Tactical Bear 3 Posted May 28, 2009 Share Posted May 28, 2009 ok, the lady shooting Craps made a big splash in the news by holding the dice for over 4 hours. An incredible feat breaking a 20-year old record. The casino tallied her consecutive roll total.She made 154 rolls without 'sevening out'. I have no math savvy so I don't know if it's correct to say I'm asking for you to compute the odds of probability or occurrence but I would be interested in knowing what the odds are for her feat?30 combinations work for anything but a 7 to be rolled, 6 combinations create the 7 that ends the game - which she avoided 154 times.This has to be a mind-blowing number, one would think.Thanks.**Edit: It's assumed these were legal, casino dice, too. Otherwise if 'loaded' dice were used, we would be reading about her obituary instead of this record.Well, it would be 5/6^154, but that ignores the sevens she can roll on come-out rolls that don't lead to a crap out. We have to remove all her come-out roles, which comprise, what, 10% of her rolls max? Maybe 15%? Link to post Share on other sites
Jelly-Filled Ace 1 Posted May 28, 2009 Share Posted May 28, 2009 I guess we have to ignore come out sevens? I can see where you're going with this but for simpler formulation don't we want to stay with she didn't roll a seven when she wasn't allowed to? Link to post Share on other sites
vbnautilus 48 Posted May 28, 2009 Share Posted May 28, 2009 Trying to understand some math that is obviously beyond me, and I have a question regarding some symbols. First, What does that sideways pitchfork mean? Next, What are the double vertical lines surrounding the w? Link to post Share on other sites
speedz99 145 Posted May 28, 2009 Share Posted May 28, 2009 What are the double vertical lines surrounding the w?What are you, some kind of moron?I know you probably can't see it, but I'm currently shaking my head in disgust at you.This guy doesn't even know about Euclidean norms! Link to post Share on other sites
hblask 1 Posted May 28, 2009 Share Posted May 28, 2009 ok, the lady shooting Craps made a big splash in the news by holding the dice for over 4 hours. An incredible feat breaking a 20-year old record. The casino tallied her consecutive roll total.She made 154 rolls without 'sevening out'. I have no math savvy so I don't know if it's correct to say I'm asking for you to compute the odds of probability or occurrence but I would be interested in knowing what the odds are for her feat?30 combinations work for anything but a 7 to be rolled, 6 combinations create the 7 that ends the game - which she avoided 154 times.This has to be a mind-blowing number, one would think.Thanks.**Edit: It's assumed these were legal, casino dice, too. Otherwise if 'loaded' dice were used, we would be reading about her obituary instead of this record.The odds of a person doing this, starting now, on their next 154 rolls, is astronomical.The odds of somebody at some casino somewhere doing this at some point approaches 1.It's the difference between *you* winning the lottery, and *somebody* winning the lottery. Link to post Share on other sites
LongLiveYorke 38 Posted May 28, 2009 Share Posted May 28, 2009 Trying to understand some math that is obviously beyond me, and I have a question regarding some symbols. What does that sideways pitchfork mean?It means "is an element of," meaning it's one of whatever set follows the pitchfork. In this case, it's R to the p, meaning the Real Numbers to the pth power, meaning a vector p elements long of real numbers, ie (R, R, R, R...... R) with p R's.Next, what are the double vertical lines surrounding the w? This guy doesn't even know about Euclidean norms!Who said it had to be Euclidean? But yes, the brackets indicate some sort of norm, or absolute value, or magnitude, or some way of converting an object into a "length." Link to post Share on other sites
LongLiveYorke 38 Posted May 28, 2009 Share Posted May 28, 2009 The odds of a person doing this, starting now, on their next 154 rolls, is astronomical.The odds of somebody at some casino somewhere doing this at some point approaches 1.It's the difference between *you* winning the lottery, and *somebody* winning the lottery.Alos, why is 154 magical. Would we not be celebrating as well if she went for 155, or 157, or some higher number?I think the relevant number is to calculate the probability of going for 154 or more (I'm assuming this will converge quickly) and then compare that number to the total number of games of craps played in a year. That should give us a sense of the scale of what happened. Link to post Share on other sites
Jelly-Filled Ace 1 Posted May 28, 2009 Share Posted May 28, 2009 I guess this is the answerAccording to Michael Shackleford -- a statistician dubbed the Wizard of Odds and an adjunct professor at the University of Nevada, Las Vegas -- DeMauro had only one chance in about 3.5 billion to roll 154 times. I would have thought higher. Link to post Share on other sites
vbnautilus 48 Posted May 28, 2009 Share Posted May 28, 2009 What are you, some kind of moron?I know you probably can't see it, but I'm currently shaking my head in disgust at you.This guy doesn't even know about Euclidean norms!Obviously my question about the norms was rhetorical. Do I have to include a "sw" in every post now? Sheesh. It means "is an element of," meaning it's one of whatever set follows the pitchfork. In this case, it's R to the p, meaning the Real Numbers to the pth power, meaning a vector p elements long of real numbers, ie (R, R, R, R...... R) with p R's.Ahhhh, that totally makes sense, thanks a lot. Link to post Share on other sites
LongLiveYorke 38 Posted May 28, 2009 Share Posted May 28, 2009 To me, this reads:D is the sum from i = 1 to n of set of all ordered pairs of a vector x and a number c such that x is a vector in R^n and c is either 1 or -1.It's kind of an odd expression. I'm not really sure how the sum part at the end fits in to the whole thing. To me, it doesn't make all that much sense, actually. Link to post Share on other sites
vbnautilus 48 Posted May 28, 2009 Share Posted May 28, 2009 To me, this reads:D is the sum from i = 1 to n of set of all ordered pairs of a vector x and a number c such that x is a vector in R^n and c is either 1 or -1.It's kind of an odd expression. I'm not really sure how the sum part at the end fits in to the whole thing. To me, it doesn't make all that much sense, actually.Well its the form of a dataset that is fed into a support vector machine (a machine learning classifier), so its just describing the data as a set of vectors each with an associated category (denoted by 1 or -1)... there's no summation. Link to post Share on other sites
brvheart 1,752 Posted July 10, 2009 Share Posted July 10, 2009 LLY, I don't understand what this means. Can you please explain it to me like I was 8? thanks."There, at one point while conducting mechanical resonance experiments with electro-mechanical oscillators he generated a resonance of several surrounding buildings but, due to the frequencies involved, not his own building, causing complaints to the police. As the speed grew he hit the resonant frequency of his own building and, belatedly realizing the danger, he was forced to apply a sledgehammer to terminate the experiment, just as the astonished police arrived." Link to post Share on other sites
LongLiveYorke 38 Posted July 10, 2009 Share Posted July 10, 2009 LLY, I don't understand what this means. Can you please explain it to me like I was 8? thanks."There, at one point while conducting mechanical resonance experiments with electro-mechanical oscillators he generated a resonance of several surrounding buildings but, due to the frequencies involved, not his own building, causing complaints to the police. As the speed grew he hit the resonant frequency of his own building and, belatedly realizing the danger, he was forced to apply a sledgehammer to terminate the experiment, just as the astonished police arrived."Resonance is one of the most important concepts in physics. Let's start by thinking of a jump rope. If I wave one end of a jump rope up and down, the whole rope vibrates together like the top image in the picture:But if I start shaking the end even FASTER, then eventually the rope will enter a "higher resonance" and it will look like the second picture. The middle area where the rope stays still is called a node. You can shake the rope even faster and get more and more nodes. If the frequency for the top image is w, then the frequency for the second image is 2w, for the third is 3w, and so on.Anyway, the thing with the building is like the rope. Every object has a different resonance frequency such that if you vibrate the object at that frequency, it will vibrate much stronger than any other. When he vibrates his own building, the building doesn't shake very much. It's as if his building is at a node in the rope. Imagine if you lived on the rope in the exact middle. If someone shook the rope very hard and the rope entered the second resonance state, you wouldn't move. You'd be living on a node. But the people around you would be shaking like crazy and would probably call the cops.The man shook his own building at a frequency that didn't resonate with his building, but the buildings next to his resonated like crazy. He thought he was doing nothing but was actually doing a lot. Link to post Share on other sites
brvheart 1,752 Posted July 10, 2009 Share Posted July 10, 2009 Resonance is one of the most important concepts in physics. Let's start by thinking of a jump rope. If I wave one end of a jump rope up and down, the whole rope vibrates together like the top image in the picture:But if I start shaking the end even FASTER, then eventually the rope will enter a "higher resonance" and it will look like the second picture. The middle area where the rope stays still is called a node. You can shake the rope even faster and get more and more nodes. If the frequency for the top image is w, then the frequency for the second image is 2w, for the third is 3w, and so on.Anyway, the thing with the building is like the rope. Every object has a different resonance frequency such that if you vibrate the object at that frequency, it will vibrate much stronger than any other. When he vibrates his own building, the building doesn't shake very much. It's as if his building is at a node in the rope. Imagine if you lived on the rope in the exact middle. If someone shook the rope very hard and the rope entered the second resonance state, you wouldn't move. You'd be living on a node. But the people around you would be shaking like crazy and would probably call the cops.The man shook his own building at a frequency that didn't resonate with his building, but the buildings next to his resonated like crazy. He thought he was doing nothing but was actually doing a lot.Ok. I think I get it. hmm... mayb...er... Could you explain it to me again, but like I was 5?That actually makes sense, I guess. What kind of machine would he have used to do this, that he could destroy with a sledgehammer? That all sounds very very interesting. I'm so thankful that Google is honoring Nikola Tesla today, or I would have never read his wiki page. That dude is the most incredible guy ever.I seriously can't believe I was never taught anything about him in school. I mean, I've heard of a Tesla Coil, but that was only because of Command & Conquer Red Alert.That dude was such an intellectual badass.He invented:Spark PlugsRemote ControlRadarRadiorotating magnetic field principle (whatever this is, it sounds important)fluorescent lightsThe harnessing of A/C Power, including the INDUCTION MOTORWIRELESS ELECTRICITYM*T*E*F*C*E*!!! That dude was awesome. Link to post Share on other sites
jesus_ 0 Posted July 10, 2009 Share Posted July 10, 2009 That actually makes sense, I guess. What kind of machine would he have used to do this, that he could destroy with a sledgehammer? That all sounds very very interesting. I'm so thankful that Google is honoring Nikola Tesla today, or I would have never read his wiki page. That dude is the most incredible guy ever.Let's not say anything we can't take back. Link to post Share on other sites
brvheart 1,752 Posted July 10, 2009 Share Posted July 10, 2009 Let's not say anything we can't take back.You weren't a dude... you were God. I'm surprised you didn't know that. Link to post Share on other sites
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now