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Showing posts with label physics. Show all posts
Showing posts with label physics. Show all posts
Tuesday, January 10, 2012
Doodling in Math: Spirals, Fibonacci, and Being a Plant
Thanks to Matina D and Naim M for the link!
Posted by
Mimi Arandjelovic
at
12:41 p.m.
Thursday, December 1, 2011
Monday, November 28, 2011
Friday, November 4, 2011
Three new elements approved: darmstadtium (Ds), roentgenium (Rg) and copernicium (Cn)
Three new elements approved
from the institute of physics (IOP)
Elements 110, 111 and 112 have been named darmstadtium (Ds), roentgenium (Rg) and copernicium (Cn) respectively.
The General Assembly approved these suggestions from the Joint Working Party on the Discovery of Elements, which is a joint body of IUPAP and the International Union of Pure and Applied Chemistry (IUPAC).
Dr Robert Kirby-Harris, Chief Executive at IOP and Secretary-General of IUPAP, said, “The naming of these elements has been agreed in consultation with physicists around the world and we’re delighted to see them now being introduced to the Periodic Table.”
The General Assembly includes delegates from national academies and physical societies around the world. IUPAP has 60 member countries altogether.
The five day meeting, which has been running from Monday 31 October and will finish today, has included presentations from leading UK physicists, and the inauguration of IUPAP’s first female President, Professor Cecilia Jarlskog from the Division of Mathematical Physics at Lund University in Sweden.
--
from wikipedia:
Darmstadtium is a chemical element with the symbol Ds and atomic number 110. It is placed as the heaviest member of group 10 but a sufficiently stable isotope is not known which would allow chemical experiments to confirm its place. This synthetic element is one of the so-called super-heavy atoms and was first synthesized in 1994, at a facility near the city of Darmstadt, from which it takes its name.
Roentgenium is a synthetic radioactive chemical element with the symbol Rg and atomic number 111. It is placed as the heaviest member of the group 11 (IB) elements, although a sufficiently stable isotope has not yet been produced in a sufficient amount that would confirm this position as a heavier homologue of gold...The name roentgenium (Rg) was proposed by the GSI team[8] in honor of the German physicist Wilhelm Conrad Röntgen.
Copernicium is a chemical element with symbol Cn and atomic number 112. It is an extremely radioactive synthetic element that can only be created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 29 seconds, but it is possible that this copernicium isotope may have an isomer with an even longer half-life, 8.9 min. It was first created in 1996 by the Gesellschaft für Schwerionenforschung (GSI). It is named after the astronomer Nicolaus Copernicus..."to honor an outstanding scientist, who changed our view of the world".
Saturday, October 8, 2011
Physics is cool
Amazing Video's facebook page has a cool physics wave theory video, go here to check it out: http://www.facebook.com/photo.php?v=10150802110695405
Thanks to Naim M for the link!
Thursday, October 6, 2011
listen to all of Björk's Biophilia
NPR is streaming all of Björk's new album Biophilia for the next week.
...So it's fitting that Biophilia, Björk's latest and most ambitious project yet, began as a collection of songs written around themes of nature, science and humanity's relationships to both. For most artists, that'd be a lofty enough concept on its own. But Björk heavily researched astrophysics, string theory, neurology, biology and other areas where science and music meet. Her big ideas didn't stop there....
From wikipedia:
For the music, Björk related the phenomenon the song describes to a musical structure or resource. For example; the song "Moon" has different musical cycles that repeat throughout the song;the song "Thunderbolt" contains arpeggios, inspired by the time between when lightning is seen and thunder is heard; and in "Solstice", the counterpoint makes reference to the movement of planets and the Earth rotation, and the pendulums used on the song make tribute to the Foucault pendulum.
The lyrics also present metaphores to those phenomena. "Dark Matter" features heavy gibberish since the dark matter phenomena are directly "unexplainable". "Virus" describes "fatal relationships" such as the relationship between a virus and a cell as Björk explained "It’s like I have this new neighbour that I have to sort of learn to live with"; "Solstice" presents the relation between the gravity effect on celestial bodies and on human beings and in "Hollow", Björk took inspiration in her "ancestors and DNA, that the grounds open below you and you can feel your mother and her mother, and her mother, and her mother, and her mother 30,000 years back. So suddenly you’re this kinda tunnel, or trunk of DNA… All these ghosts come up so it ended up begin a halloween song and quite gothic in a way… It’s like being part of this everlasting necklace when you’re just a bead on a chain and you sort of want to belong and be a part of it and it’s just like a miracle."
Posted by
Mimi Arandjelovic
at
12:54 a.m.
Saturday, September 24, 2011
Scientists Report Breaking The Speed Of Light, But Can It Be True?
from NPR
by ADAM FRANK
The AP is reporting results from a group of Italian researchers using equipment from the European Organization for Nuclear Research (CERN) that claims they've measured particles traveling at a speed greater than the speed of light.
Nature reports:
If this result were true (it has not been published, and thus not peer-reviewed, yet) then the structure of the world might be very different from what we believe. Einstein's theory of relativity is built on the idea that there is an absolute cosmic speed limit — that light is the thing traveling at this speed is beside the point. Among other things, the existence of that speed limit sets the structure of causality in the Universe.
In other words, that effects follow causes and not the other way around, which is, in general, a good thing. The universe would be a whole lot harder to understand without this link between cause and effect. Think of it as being shot before the trigger is pulled. It's more nuanced than what I am describing here (of course) but breaking light-speed means breaking relativity and casuality as we know it flows from relativity.
So if these results are correct then we might have to go back and start rebuilding pretty much all of modern foundational physics. Are they correct? This kind of thing has been claimed before. My colleague Steve Manly who works with neutrino beams in experiments like the ones described by the AP story puts it this way, "I'm not planning to eliminate the relativity portion of my general physics course anytime soon."
Based on past experience, these results are probably wrong but it sure would be a wild ride if they prove correct.
by ADAM FRANK
The AP is reporting results from a group of Italian researchers using equipment from the European Organization for Nuclear Research (CERN) that claims they've measured particles traveling at a speed greater than the speed of light.
Nature reports:
The experiment is called OPERA (Oscillation Project with Emulsion-tRacking Apparatus), and lies 1,400 metres underground in the Gran Sasso National Laboratory in Italy. It is designed to study a beam of neutrinos coming from CERN, Europe's premier high-energy physics laboratory located 730 kilometres away near Geneva, Switzerland. Neutrinos are fundamental particles that are electrically neutral, rarely interact with other matter, and have a vanishingly small mass. But they are all around us — the Sun produces so many neutrinos as a by-product of nuclear reactions that many billions pass through your eye every second.
The 1,800-tonne OPERA detector is a complex array of electronics and photographic emulsion plates, but the new result is simple — the neutrinos are arriving 60 nanoseconds faster than the speed of light allows. "We are shocked," says Antonio Ereditato, a physicist at the University of Bern in Switzerland and OPERA's spokesman.
If this result were true (it has not been published, and thus not peer-reviewed, yet) then the structure of the world might be very different from what we believe. Einstein's theory of relativity is built on the idea that there is an absolute cosmic speed limit — that light is the thing traveling at this speed is beside the point. Among other things, the existence of that speed limit sets the structure of causality in the Universe.
In other words, that effects follow causes and not the other way around, which is, in general, a good thing. The universe would be a whole lot harder to understand without this link between cause and effect. Think of it as being shot before the trigger is pulled. It's more nuanced than what I am describing here (of course) but breaking light-speed means breaking relativity and casuality as we know it flows from relativity.
So if these results are correct then we might have to go back and start rebuilding pretty much all of modern foundational physics. Are they correct? This kind of thing has been claimed before. My colleague Steve Manly who works with neutrino beams in experiments like the ones described by the AP story puts it this way, "I'm not planning to eliminate the relativity portion of my general physics course anytime soon."
Based on past experience, these results are probably wrong but it sure would be a wild ride if they prove correct.
Friday, April 1, 2011
Tuesday, November 23, 2010
LOL: 5 Famous Scientists Dismissed as Morons in Their Time
Morning's post was a bit heavy, here is something lighter but in the same revolutionary & inspirational vein. Great photos and captions at the original website (cracked.com) but am stealing anyway because its so funny and you know i like to archive :) -MA
From Cracked.com
by ANTHRONY JURADO
Every nutjob in the world with some out-there theory thinks he's Galileo, rejected for daring to think different. Virtually all of them are, in fact, simply insane.
Yet, there have been brilliant rebels who put their own world-changing ideas on the line, only to end up like Doc Brown in his alternate timeline: humiliated, ridiculed, ignored and/or straight driven to insanity.
#5. Gregor Mendel

You probably know Mendel as the guy who pioneered the science of genetics, and for keeping eighth-graders busy while science teachers watch porn at their desks. Anybody with a high school diploma has filled out those dominant/recessive trait Punnett squares, though astute readers are probably wondering why that technique is called a Punnett square if it predicts patterns Mendel discovered.
What you probably didn't know was that before making his revolutionary discovery, Gregor Mendel flunked his ass out of school and resigned himself to a quiet life as the abbot of a monastery. It had an extensive experimental garden and there Mendel patiently spent the next seven years of his life breeding and cross-breeding peas.
He carefully documented his work and developed what would eventually be known as Mendel's Laws of Inheritance. Then he wrote it up and got it published in an lesser-known journal, the Journal of the Brno Natural History Society in 1866.
His Genius Was Rewarded By ...
A quiet life of complete anonymity. Mendel's work was read by about zero people, even after he took it upon himself to contact the highest minds of his time by personally sending them copies of his theory. It turns out he would have been better off writing it on a paper bag filled with dog shit and leaving the whole flaming mess on porches.
Why did they ignore him? Because the greatest minds of his time couldn't understand him. It wasn't until 16 years after his death that three independent botanists rediscover Mendel's work and started the genetics ball rolling.
#4. Ignaz Semmelweis
We've brought up poor old Semmelweis once before, but just in case you don't have a running loop of Cracked articles going through your head, here's the recap: Back in 1847, Semmelweis found himself in charge of two maternity clinics. The first clinic was a teaching school, with medical students learning birthing, autopsying and everything in between. The second clinic was intended for women who couldn't afford health care and was serviced by midwives, not actual doctors or students.
Yet it was the second clinic that women of all social statuses begged to get into. Why? Because if they went to the first clinic they'd have a 10 percent chance of dying of puerperal fever, a six percent greater rate of death than in the midwife-run hospital. Women literally had a better chance of surviving a birth on the street than in the first clinic. After an exhaustive study, Semmelweis figured out that medical students were smothered in disease cooties from cadavers, and that maybe, just maybe, they should wash their hands in between the autopsy room and the birthing rooms.
He insisted students perform a simple chlorine wash after handling dead guys and immediately got the death rate down to one to two percent. With numbers like that, you'd think the whole continent of Europe, much less the medical community, would have crowned him "king of live babies" or something.
His Genius Was Rewarded By ...
First dementia, then a beatdown at an insane asylum, then death, by virtually the same disease he had eradicated in his own hospital.
Semmelweis didn't just have the disregard of his contemporaries, he had their flat-out scorn. Maybe it was because he didn't get around to explaining himself on paper right away, so no one understood what hand-washing had to do with keeping people alive. Some doctors were actually insulted that he was accusing Viennese medical students being dirty enough to kill people.
Within 14 years of his groundbreaking discovery, Semmelweis just stopped giving a fuck. He got drunk all the time and called all his detractors "ignoramuses" and "murderers." He started chilling with prostitutes and lashing out at family. That last part proved to be a bad move, because in 1865 they had him committed to an insane asylum, where he was promptly beat up and stuck in a dark cellar.
He died two weeks later. It took another 20 years and Louis Pasteur's germ theory for the rest of the world to come around to the concept of washing your hands to keep from getting sick.
#3. George Zweig
The year 1964 was a watershed year by any measure. The Beatles arrived, the Civil Rights Act was passed, Nicolas Cage was born and in two separate parts of the world, two separate scientists proposed the existence of quarks, the teeny-tiny subatomic particles that combine to form matter. If you've been paying attention, you know one of these guys is about to get screwed. (Hint: It's George Zweig.)
Zweig had three things going against him in 1964. One, he was a young graduate student, unpublished and unproven. Two, he was working at a particle research center in Geneva. You'd think that would be an advantage, but it turns out his institute had a stringent model for publication, and his paper on quarks, which he called "aces," didn't meet its standards (even though he had come up with a much cooler name for the particle). And three, an older scientist from his grad school proposed the exact same theory at the exact same time and because of his stature was able to publish that exact same theory with the exact same publication that rejected Zweig's.
At first, both men were called crazy for their insane notions of invisible particles. They had no model of behavior for the buggers and no methods of ever actually looking at them. But eventually the science world came around, and by 1969, Zweig's rival was awarded the Nobel Prize in Physics for his work. As for Zweig ...
His Genius Was Rewarded By ...
Being blackballed by a major university and accusations of being a "charlatan."
It wasn't until the 1970s that anyone could actually prove the existence of quarks, and by that time, the Nobel Prize committee felt it had already given the little particles enough attention, so it was reluctant to revisit the subject. Nevertheless, in 1977, Zweig and his rival were both nominated, but neither won. Zweig ended up changing his field of study to neurobiology, presumably believing that if he made a seminal contribution to every area of science, he'd eventually get credit for something.
#2. Albert Einstein
Trying to convince you that Albert Einstein was rejected in any way during his lifetime let alone a moron is a hard sell, considering that he was one of the most famous men on the planet at the time. But buried deep in a lifetime of utter brilliance, Einstein was saddled with one big mistake. One that it turned out wasn't a mistake at all.
To understand, you have to know a little bit about Einstein's General Theory of Relativity. Not a whole lot, just the fact that it didn't allow for a static universe. Einstein believed the universe had to be static, or else the forces of gravity would cause the whole universe to contract onto itself, which it apparently wasn't doing. So, to make up for this weird conundrum, he invented something called the cosmological constant, an unknown, unchanging force that allowed him to have his cake (General Theory of Relativity) and eat it, too (stand by a static-universe model).
But not too long after Einstein came up with the cosmological constant, Edwin Hubble burst his little unmoving universe bubble by finding evidence that the whole shebang was expanding. Einstein called the cosmological constant his "biggest blunder" and went to his grave thinking he was an idiot for having proposed it. And so did everyone else. For a while.
His Genius Was Rewarded By ...
Einstein didn't get heaped with scorn like some of the other geniuses on this list, so he got off with a little self-deprecation with a side of regret. And he also dropped the whole idea of the cosmological constant. But here's the thing -- it turns out he may have been right all along. Not about the universe being static, of course, but that this mysterious, unknown entity existed in the first place.
In the 1990s, scientists discovered that the universe was expanding faster than they had previously thought and that the rate of expansion was being fueled by a mysterious, unknown entity. There are several contenders up for consideration as the cause, but everyone's favorite? You guessed it: Einstein's cosmological constant. His math of the constant magically fit the bill. Also because you never go wrong when you bet on Einstein.
(Future super-geniuses reading this article: Please make an effort to be photographed with your tongue out, flipping the bird, gesturing to your genitals or something similar. Cracked's 2089 PR department thanks you.)
#1. Ludwig Boltzmann


Ludwig Boltzmann had the unfortunate luck of being born with a genius brain at the wrong time. Back in the 19th century, there was a huge debate over the nature of matter. Boltzmann not only had the audacity to presuppose the existence of atoms at a time when the atomic model was still controversial among scientists, but also built every one of his brilliant theories as if there was no debate at all. How brilliant? Hang on to your test tubes, because thing are about to get sciencey.
For one, he pioneered the study of statistical thermodynamics, which is a field of physics that provides a framework for predicting how a large number of particles will behave in a system. So, let's say you're camping and you start a fire. Boltzmann was the guy who tried to figure out what the crap was going on in those logs on a molecular level that allowed the fire to kindle, and he used fancy math formulas to figure it out. His work ultimately paved the way for the field of quantum mechanics, which eventually paved the way for the greatest time travel show ever (Quantum Leap).
His Genius Was Rewarded By ...
Death. He got death.
Back then, defending the existence of atoms was akin to defending creationist version of the origins of man today. Boltzmann wasn't just forced to defend something that would be accepted as fact within a few years, he was shamed for his stubborn refusal to yield and for his so-called materialist beliefs.
Nobody ever told scientists that nonmaterial science is already called philosophy. A long series of uneven debates left nearly every other supporter of atoms silent, leaving Boltzmann as their chief defender. Even colleagues who originally agreed with him began to question atoms' existence when his work seemingly undermined previously understood laws of physics.
The emotional burden of being the only right guy in the world, coupled with what was probably undiagnosed bipolar disorder, proved too much for Boltzmann to handle, and he hung himself in 1906, only three years before another scientist proved the undeniable existence of atoms. Nice job, science.
From Cracked.com
by ANTHRONY JURADO
Every nutjob in the world with some out-there theory thinks he's Galileo, rejected for daring to think different. Virtually all of them are, in fact, simply insane.
Yet, there have been brilliant rebels who put their own world-changing ideas on the line, only to end up like Doc Brown in his alternate timeline: humiliated, ridiculed, ignored and/or straight driven to insanity.
#5. Gregor Mendel
What you probably didn't know was that before making his revolutionary discovery, Gregor Mendel flunked his ass out of school and resigned himself to a quiet life as the abbot of a monastery. It had an extensive experimental garden and there Mendel patiently spent the next seven years of his life breeding and cross-breeding peas.
He carefully documented his work and developed what would eventually be known as Mendel's Laws of Inheritance. Then he wrote it up and got it published in an lesser-known journal, the Journal of the Brno Natural History Society in 1866.
His Genius Was Rewarded By ...
A quiet life of complete anonymity. Mendel's work was read by about zero people, even after he took it upon himself to contact the highest minds of his time by personally sending them copies of his theory. It turns out he would have been better off writing it on a paper bag filled with dog shit and leaving the whole flaming mess on porches.
Why did they ignore him? Because the greatest minds of his time couldn't understand him. It wasn't until 16 years after his death that three independent botanists rediscover Mendel's work and started the genetics ball rolling.
#4. Ignaz Semmelweis
Yet it was the second clinic that women of all social statuses begged to get into. Why? Because if they went to the first clinic they'd have a 10 percent chance of dying of puerperal fever, a six percent greater rate of death than in the midwife-run hospital. Women literally had a better chance of surviving a birth on the street than in the first clinic. After an exhaustive study, Semmelweis figured out that medical students were smothered in disease cooties from cadavers, and that maybe, just maybe, they should wash their hands in between the autopsy room and the birthing rooms.
He insisted students perform a simple chlorine wash after handling dead guys and immediately got the death rate down to one to two percent. With numbers like that, you'd think the whole continent of Europe, much less the medical community, would have crowned him "king of live babies" or something.
His Genius Was Rewarded By ...
First dementia, then a beatdown at an insane asylum, then death, by virtually the same disease he had eradicated in his own hospital.
Semmelweis didn't just have the disregard of his contemporaries, he had their flat-out scorn. Maybe it was because he didn't get around to explaining himself on paper right away, so no one understood what hand-washing had to do with keeping people alive. Some doctors were actually insulted that he was accusing Viennese medical students being dirty enough to kill people.
Within 14 years of his groundbreaking discovery, Semmelweis just stopped giving a fuck. He got drunk all the time and called all his detractors "ignoramuses" and "murderers." He started chilling with prostitutes and lashing out at family. That last part proved to be a bad move, because in 1865 they had him committed to an insane asylum, where he was promptly beat up and stuck in a dark cellar.
He died two weeks later. It took another 20 years and Louis Pasteur's germ theory for the rest of the world to come around to the concept of washing your hands to keep from getting sick.
#3. George Zweig
Zweig had three things going against him in 1964. One, he was a young graduate student, unpublished and unproven. Two, he was working at a particle research center in Geneva. You'd think that would be an advantage, but it turns out his institute had a stringent model for publication, and his paper on quarks, which he called "aces," didn't meet its standards (even though he had come up with a much cooler name for the particle). And three, an older scientist from his grad school proposed the exact same theory at the exact same time and because of his stature was able to publish that exact same theory with the exact same publication that rejected Zweig's.
At first, both men were called crazy for their insane notions of invisible particles. They had no model of behavior for the buggers and no methods of ever actually looking at them. But eventually the science world came around, and by 1969, Zweig's rival was awarded the Nobel Prize in Physics for his work. As for Zweig ...
His Genius Was Rewarded By ...
Being blackballed by a major university and accusations of being a "charlatan."
It wasn't until the 1970s that anyone could actually prove the existence of quarks, and by that time, the Nobel Prize committee felt it had already given the little particles enough attention, so it was reluctant to revisit the subject. Nevertheless, in 1977, Zweig and his rival were both nominated, but neither won. Zweig ended up changing his field of study to neurobiology, presumably believing that if he made a seminal contribution to every area of science, he'd eventually get credit for something.
#2. Albert Einstein
To understand, you have to know a little bit about Einstein's General Theory of Relativity. Not a whole lot, just the fact that it didn't allow for a static universe. Einstein believed the universe had to be static, or else the forces of gravity would cause the whole universe to contract onto itself, which it apparently wasn't doing. So, to make up for this weird conundrum, he invented something called the cosmological constant, an unknown, unchanging force that allowed him to have his cake (General Theory of Relativity) and eat it, too (stand by a static-universe model).
But not too long after Einstein came up with the cosmological constant, Edwin Hubble burst his little unmoving universe bubble by finding evidence that the whole shebang was expanding. Einstein called the cosmological constant his "biggest blunder" and went to his grave thinking he was an idiot for having proposed it. And so did everyone else. For a while.
His Genius Was Rewarded By ...
Einstein didn't get heaped with scorn like some of the other geniuses on this list, so he got off with a little self-deprecation with a side of regret. And he also dropped the whole idea of the cosmological constant. But here's the thing -- it turns out he may have been right all along. Not about the universe being static, of course, but that this mysterious, unknown entity existed in the first place.
In the 1990s, scientists discovered that the universe was expanding faster than they had previously thought and that the rate of expansion was being fueled by a mysterious, unknown entity. There are several contenders up for consideration as the cause, but everyone's favorite? You guessed it: Einstein's cosmological constant. His math of the constant magically fit the bill. Also because you never go wrong when you bet on Einstein.
(Future super-geniuses reading this article: Please make an effort to be photographed with your tongue out, flipping the bird, gesturing to your genitals or something similar. Cracked's 2089 PR department thanks you.)
#1. Ludwig Boltzmann

For one, he pioneered the study of statistical thermodynamics, which is a field of physics that provides a framework for predicting how a large number of particles will behave in a system. So, let's say you're camping and you start a fire. Boltzmann was the guy who tried to figure out what the crap was going on in those logs on a molecular level that allowed the fire to kindle, and he used fancy math formulas to figure it out. His work ultimately paved the way for the field of quantum mechanics, which eventually paved the way for the greatest time travel show ever (Quantum Leap).
His Genius Was Rewarded By ...
Death. He got death.
Back then, defending the existence of atoms was akin to defending creationist version of the origins of man today. Boltzmann wasn't just forced to defend something that would be accepted as fact within a few years, he was shamed for his stubborn refusal to yield and for his so-called materialist beliefs.
Nobody ever told scientists that nonmaterial science is already called philosophy. A long series of uneven debates left nearly every other supporter of atoms silent, leaving Boltzmann as their chief defender. Even colleagues who originally agreed with him began to question atoms' existence when his work seemingly undermined previously understood laws of physics.
The emotional burden of being the only right guy in the world, coupled with what was probably undiagnosed bipolar disorder, proved too much for Boltzmann to handle, and he hung himself in 1906, only three years before another scientist proved the undeniable existence of atoms. Nice job, science.
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