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Atomic structure
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ATLAS detector, CERN
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Kaon-proton collision
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Kaon-proton collision
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Particle tracks
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Higgs boson decay model
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Particle physics equations
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Albert Einstein
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ATLAS detector, CERN
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First ever human X-ray
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ATLAS detector, CERN
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Lead ion collisions
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Higgs boson, conceptual artwork
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Particle tracks
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CMS detector, CERN
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Higgs boson, conceptual artwork
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Lead ion collisions
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Particle tracks
![The OPAL detector at CERN](/t/173/the-opal-detector-at-cern-1112285.jpg "<b class=qtipBold>The OPAL detector at CERN</b><br>A technician works on one of two end caps of theOPAL detector at CERN, the European centre forparticle physics near Geneva. OPAL is one of 4giant particle detectors at the LEP collider. LEPcollides electrons & positrons accelerated to anenergy of 50 GeV in a circular tunnel 100munderground & 27km in circumference. OPAL is acylindrical assembly of many types of apparatuswhich fit together like layers of an onion aroundthe point where the particles collide. The OPALend caps consist of pre-shower counters (the"spokes" of the wheel) & electro-magnetic & hadroncalorimeters. The technician is Martin Sproston ofthe Rutherford Appleton Laboratory in Britain.Photo taken April 1989.<br><em>© David Parker/Science Photo Library</em>")
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The OPAL detector at CERN
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Albert Einstein
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Particle physics equations
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Particle tracks on galaxies
![Chance in the universe](/t/173/chance-in-the-universe-6274369.jpg "<b class=qtipBold>Chance in the universe</b><br>Chance in the universe. Computer illustration representing the chance, randomness and probability inherent in the universe according to the theory of quantum mechanics. Dice are seen spiralling towards a black hole, their numbers producing a random sequence. This randomness and probability in quantum physics (subatomic physics) was described by Werner Heisenberg in his 'Uncertainty Principle', and by Erwin Schrodinger. Einstein did not believe in a random universe and consequently said "God does not play dice with the universe".<br><em>© MEHAU KULYK/SCIENCE PHOTO LIBRARY</em>")
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Chance in the universe
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Wormhole
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Artwork of an atom
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Prof. Peter Higgs
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Particle physics research
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Higgs Boson particle, artwork
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Particle tracks
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Particle tracks on galaxies
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Physics experiment
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LHC tunnel, CERN
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Lead ion collisions
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![Grid computer farm, CERN](/t/173/grid-computer-farm-cern-1122047.jpg "<b class=qtipBold>Grid computer farm, CERN</b><br>Grid computer farm. Technician wheeling stacks ofdiscs through banks of computers forming part of a"PC farm" at CERN, the European Particle Physicslaboratory near Geneva, Switzerland. They arebeing prepared to accept and analyse data from thenew Large Hadron Collider (LHC). The LHC willsmash particles together in an effort to findtheir constituents, and will generate millions ofgigabytes of data. This is also being used as atest run for The Grid, a network of computers thatcan share processing power. This means that astandard desktop computer connected to The Gridcan be used to perform powerful calculations.<br><em>© Cern/Science Photo Library</em>")
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Grid computer farm, CERN
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Atomic structure
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Art of particle tracks
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Particle tracks on galaxies
![Art of Schrodinger's Cat experiment](/t/173/art-of-schrodingers-cat-experiment-6273950.jpg "<b class=qtipBold>Art of Schrodinger's Cat experiment</b><br>Schrodinger's Cat. Computer artwork depicting the famous "Schrodinger's Cat" thought experiment. The image shows a cat both dead (grey) and alive (ginger) inside a box on a starfield background. The orbitals of a radioactive isotope are superimposed over the cat. In this hypothetical situation, the cat is thought to be both alive and dead until observed. This is because a quantum event (the decay of a radioac- tive particle) is set up to trigger the release of a lethal poison from a vial (not seen here) that kills the cat. According to quantum physics, the unstable particle exists in an intermediate "probabilistic" state until it is observed.<br><em>© VOLKER STEGER/SCIENCE PHOTO LIBRARY</em>")
![ALICE particle detection simulation](/t/173/alice-particle-detection-simulation-1112346.jpg "<b class=qtipBold>ALICE particle detection simulation</b><br>ALICE particle detection simulation. Cross-section through the ALICE detector showing asimulation of particle detection. ALICE is "ALarge Ion Collider Experiment" for the LHC (LargeHadron Collider), at CERN (the European particlephysics laboratory) near Geneva, Switzerland. Itwill surround part of the LHC, a 27-kilometre-longunderground ring that will accelerate ion beams tocollide head-on (seen at centre). The collisionenergy will create new particles that will decayinto products that will be detected as tracks(yellow, the time projection chamber) and impacts(blue crosses, outer ring). Two other detectorsare at upper and lower centre. The LHC shouldstart operating in 2007.<br><em>© Cern/Science Photo Library</em>")
![Particle tracks in bubble chamber](/t/173/particle-tracks-in-bubble-chamber-1112344.jpg "<b class=qtipBold>Particle tracks in bubble chamber</b><br>Bubble chamber particle tracks. Colouredbubble chamber view of an electromagnetic shower(centre). This has been produced by a muon neutrino (entering from the left)interacting with a neutron at the border of thelarge circle. The tracks are caused by particlesmoving through superheated liquid, which will notboil until it is disturbed. The passage ofsub-atomic particles provides this disturbance, and they leave tracks of minute bubbles in theirwake. These tracks can be photographed andstudied. The "electromagnetic shower" occurs whenby-products of the interaction disturb thesurrounding liquid. Data from the Big EuropeanBubble Chamber (BEBC) at CERN.<br><em>© Cern/Science Photo Library</em>")
