DAVID PARKER / SCIENCE PHOTO LIBRARY DAVID PARKER / SCIENCE PHOTO LIBRARY
Particle physics. Physicists view a computer display of a proton-antiproton collision from the D-Zero subatomic particle detector. This detector is at the Fermi National Accelerator Laboratory (Fermilab) near Chicago, USA. The white line entering the picture from bottom centre and top right represents the incoming proton and antiproton. They collide and annihilate at the centre to create a burst of new particles, represented by the light blue, pink and yellow lines and variously coloured dots. The green and dark blue circles represent the two ends of the cylindrical detector. The two physicists are Norman Graf (left) and Stuart Fuess.
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