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But the quantum world is bizarrely different. Two metal plates, placed almost infinitesimally close together, spontaneously attract each other. What seems like magic is known as the Casimir force, and it has been well-documented in experiments. The cause goes to the heart of quantum physics: Seemingly empty space is not actually empty but contains virtual particles associated with fluctuating electromagnetic fields. These particles push...

2008-07-14

 quantum physics Casimir force
Pancomputationalism is a view that the universe is a huge computational machine or rather a network of computational processes which following fundamental physical laws compute (dynamically develop) its own next state from the current one.
 information physics pancomputationalism universe mathematics
Europe's particle physics lab, Cern, is losing ground rapidly in the race to discover the elusive Higgs boson, or "God particle", its US rival claims...

2009-02-17

 physics science mass Higgs boson God particle matter Cern LHC Tevatron race
Excellent about the need for re-unification of mathematics and geometry, and physics. ... Also: Jacobi noted, as mathematics' most fascinating property, that in it one and the same function controls both the presentations of a whole number as a sum of four squares and the real movement of a pendulum. These discoveries of connections between heterogeneous mathematical objects can be compared with the discovery of the connection between...

1997-03-07

 philosophy mathematics physics education geometry
What's attractive about studying E8 is that it's as complicated as symmetry can get. Mathematics can almost always offer another example that's harder than the one you're looking at now, but for Lie groups, E8 is the hardest one. ... Each of the 205,263,363,600 entries on the matrix is far more complicated than a straightforward number; some are complex equations...

2007-03-19

 philosophy mathematics physics geometry dimension complexity
The inspiration for their theory isn't just an explanation for the Big Bang our Universe experienced 13.7 billion years ago, but lies in an attempt to explain one of the largest mysteries in physics - why time seems to move in one direction. The laws that govern physics on a microscopic scale are completely reversible, and yet, "no one gets confused about which is yesterday and which is tomorrow". Physicists have long blamed...

2008-06-06

 philosophy space time physics universe cosmology Big Bang
What if electrons were not really elementary, but were formed at the ends of long "strings" of other, fundamental particles? ... The pair ran simulations to see if their string-nets could give rise to conventional particles and fractionally charged quasi-particles. They did. ... As the net of strings vibrated, it produced a wave that behaved according to a very familiar set of laws - Maxwell's equations, which describe the...

2007-03-15

 physics universe string theory
The US has finished constructing a huge physics experiment aimed at recreating conditions at the heart of our Sun. The US National Ignition Facility is designed to demonstrate the feasibility of nuclear fusion, a process that could offer abundant clean energy. The lab will kick-start the reaction by focusing 192 giant laser beams on a tiny pellet of hydrogen fuel. To work, it must show that more energy can be extracted from the process...

2009-03-31

 physics laser nuclear fusion energy
Previously it has been impossible to photograph electrons since their extremely high velocities have produced blurry pictures. In order to capture these rapid events, extremely short flashes of light are necessary, but such flashes were not previously available. With the use of a newly developed technology for generating short pulses from intense laser light, so-called attosecond pulses, scientists at the Lund University Faculty of...

2008-02-22

 electron movie physics
A molecule that until now existed only in theory has finally been made. Known as a Rydberg molecule, it is formed through an elusive and extremely weak chemical bond between two atoms. The new type of bonding, reported in Nature, occurs because one of the two atoms in the molecule has an electron very far from its nucleus or centre.

2009-04-23

 molecule physics gas condensation
Scientists have "entangled" the motions of pairs of atoms for the first time...

2009-06-03

 entanglement teleport physics quantum
The ubiquitous periodic table will soon have a new addition - the "super-heavy" element 112...

2009-06-10

 chemistry physics periodic table elements
Room-temperature entanglement seems to be a by-product of the process of harvesting light.

2009-05-28

 entanglement quantum physics photosynthesis biology

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