8
POPSThe life of Albert Einstein - He is best known for his theory of relativity and specifically mass-energy equivalence, E = mc2. Einstein received the 1921 Nobel Prize in Physics "for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect."
19
POPS"The DNA Code" - Life Hardwired in the Universe The study indicates that you don't need a miracle to arrive at the chemical cocktail for early life, just a decently large asteroid with the right components. That's all. The entire universe could be stuffed with life, from the earliest prebiotic protein-a-likes to fully DNAed descendants. The path from one to the other is long, but we've had thirteen and a half billion years so far and it's happened at least once.
7
POPS"The DNA Code" - New Research Shows Life Hardwired in the Universe The study indicates that you don't need a miracle to arrive at the chemical cocktail for early life, just a decently large asteroid with the right components. That's all. The entire universe could be stuffed with life, from the earliest prebiotic protein-a-likes to fully DNAed descendants.
13
POPS"The DNA Code" - New Research Shows Life Hardwired in the Universe more: They also match those in simulations of early Earth, and most critically, those simulations were performed by other people. The implications are staggering: good news for anyone worried about how we're alone, and bad news for anyone who demands some kind of "Designer" to put life together - it seems that physics can assemble the organic jigsaw all by itself, thank you very much, and has probably done so throughout space since the beginning of everything. The study indicates that you don't need a miracle to arrive at the chemical cocktail for early life, just a decently large asteroid with the right components. That's all. The entire universe could be stuffed with life, from the earliest prebiotic protein-a-likes to fully DNAed descendants. The path from one to the other is long, but we've had thirteen and a half billion years so far and it's happened at least once.
12
POPSThe Story of Schroedinger's Cat (An Epic Poem) Or atom--whatever--but when it emits, A trigger device blasts the vial into bits Which snuffs our poor kitty. The odds of this crime Are 50 to 50 per hour each time. The cylinder's sealed. The hour's passed away. Is Our pussy still purring--or pushing up daisies? Now, you'd say the cat either lives or it don't But quantum mechanics is stubborn and won't. Statistically speaking, the cat (goes the joke), Is half a cat breathing and half a cat croaked. To some this may seem a ridiculous split, But quantum mechanics must answer, "Tough shit. We may not know much, but one thing's fo' sho': There's things in the cosmos that we cannot know. Shine light on electrons--you'll cause them to swerve. The act of observing disturbs the observed-- Which ruins your test. But then if there's no testing To see if a particle's moving or resting Why try to conjecture? Pure useless endeavor! We know probability--certainty, never.'
18
POPS"The Universe In Your Head" more (at source): Other physicists, however, point out that Lanza's view is fully in line with the perspective from quantum mechanics that the observer plays a huge role in how reality is observed. "So what Lanza says in this book is not new," Richard Conn Henry, a physics and astronomy professor at Johns Hopkins University, said in a book review. "Then why does Robert have to say it at all? It is because we, the physicists, do not say it - or if we do say it, we only whisper it, and in private - furiously blushing as we mouth the words. True, yes; politically correct, hell no!"
16
POPSSpace and Time are forms of animal sense perception
The final option is biocentrism, which holds that the universe is created by life and not the other way around. According to biocentrism, time does not exist independently of the life that notices it. Everything we perceive is actively and repeatedly being reconstructed inside our heads in an organized whirl of information. Time in this sense can be defined as the summation of spatial states occurring inside the mind. So what is real? If the next mental image is different from the last, then it is different, period. We can award that change with the word time, but that does not mean there is an actual invisible matrix in which changes occur. That is just our own way of making sense of things. We watch our loved ones age and die and assume that an external entity called time is responsible for the crime. There is a peculiar intangibility to space, as well. Most of us still think like Newton, regarding space as sort of a vast container that has no walls. But our notion of space is fa
25
POPSBuilding 'The Matrix' Feynman envisioned, a general purpose, programmable quantum computer could itself carry out quantum simulations. But such machines are still decades away, most researchers say, while machines designed only for quantum simulations may become available sooner.
30
POPSQuantum Theory May Explain Wishful Thinking The intriguing title hides an interesting application of mathematical tools used in quantum mechanics to model decision making under condition of uncertainty. Pothos and Busemeyer hope that further research on quantum probability models of human cognition could help answer fundamental questions about the nature of how we think. For example, what does it mean to be rational? Another example is Schrodinger’s equation, which predicts a periodic oscillation between choices after a minimum length of time. This oscillation matches with electroencephalography signals and may explain why the longer you debate on a decision, the more you fluctuate. Overall, if our brains use quantum principles, and quantum computation is known to be fundamentally faster than classical computation in computers, then perhaps quantum principles can even help explain the success of human cognition.
20
POPSPhysicists investigate how time moves forward This provides an orientation, or arrow of time, and it is generally believed that all other time asymmetries, such as our sense that future and past are different, are a direct consequence of this thermodynamic arrow.” In their study, Feng and Crooks have developed a method to accurately measure “time asymmetry” (which refers to our intuitive concept of time, that the past differs from the future, in contrast with time symmetry, where there is no distinction between past and future). They began by investigating the increase in energy dissipation, or entropy, in various arrangements. While time blatantly moves forward in the macroscopic world, the direction of time becomes confusing on the scale of a single molecule
3
POPSWas Einstein Wrong?: A Quantum Threat to Special Relativity Our intuition, going back forever, is that to move, say, a rock, one has to touch that rock, or touch a stick that touches the rock, or give an order that travels via vibrations through the air to the ear of a man with a stick that can then push the rock—or some such sequence. We term this intuition "locality." Quantum mechanics has upended many an intuition, but none deeper than this one. And this particular upending carries with it a threat, as yet unresolved, to special relativity—a foundation stone of our 21st-century physics. --- SO COOL!
12
POPSAlien hunt is too exciting to ignore Well, the writer certainly has a point. There is something very basic in answering this question. Life on earth is ultimately unique as long as no alien life is discovered. And yet we strive to know that we are not alone even at the cost of losing this very unique place. Is it the primordial blessing of the tree of knowledge that makes us go there?
3
POPSNumbers in the News "The number itself is incomprehensible by human minds, and can only be theoretically understood in a fractional parallel universe which we refer to as the DC dimension," said Brossard. "The best way to understand a stimulus is to imagine a dollar sign followed by a packed string of hexidecimal nanodigits, wound into a triple helix, woven into a dodecahedron, and stacked on top of one another. Now imagine you were a black hole on the far edge of the universe, trying to escape the stimulus at 30 times the speed of light. The stimulus would still catch up to you and ram your black hole with such furious, repeated force that it would cause your entire reality itself to collapse." "The exciting news is that with more powerful computers and drugs, we believe we are on the verge of discovering an even larger number, which we refer to as a 'stimulusconferencebill,'" said Xiao. "Speaker Pelosi has already promised us the funding."
10
POPSPrenatal tests. from the article: "If a prenatal test for autism becomes available, should medical science be used to 'cure' the condition?"
15
POPSComputing In A Molecule
They are focusing on two architectures: one that mimics the classical design of a logic gate but in atomic form, including nodes, loops, meshes etc., and another, more complex, process that relies on changes to the molecule’s conformation to carry out the logic gate inputs and quantum mechanics to perform the computation. The logic gates are interconnected using scanning-tunnelling microscopes and atomic-force microscopes – devices that can measure and move individual atoms with resolutions down to 1/100 of a nanometre (that is one hundred millionth of a millimetre!). As a side project, partly for fun but partly to stimulate new lines of research, Joachim and his team have used the technique to build tiny nano-machines, such as wheels, gears, motors and nano-vehicles each consisting of a single molecule. “Put logic gates on it and it could decide where to go,” Joachim notes, pointing to what would be one of the world’s first implementations of atomic-scale robotics.
5
POPSFree will and top-down causation To escape the 'billiard ball' determinism of the Newton universe an attempt is made by using quantum theory and its indeterminism. This article seems to say that that is no use either.
19
POPSTime to test time Yet if Hogan's ideas are right, noise associated with this fundamental fuzziness should be prominent at GEO600, a joint British and German machine operating near Hannover, Germany, that is searching for gravitational waves. These waves are thought to arise during events such as the massive cosmic collisions of black holes and neutron stars. Confirmation of the idea — which could come as experimental upgrades to GEO600 are put in place over the coming year — would be a big step towards a verifiable quantum theory of gravity, a long-sought unification of quantum mechanics (the physics of the very small) with general relativity (the physics of the very big). Hogan outlines his predictions in a paper published on 30 October in Physical Review D1.
2
Pops
Newest Clips
Latest Comments
Most Pops
Print
Save
Turn on live update