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UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 1
Bob van Eijk
and
5 June 1998
Symmetries in Nature
‘Science as Culture’
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 2
‘Some selected History’~ 580 - 500 B.C. Pythagoras postulates the earth is round, while searching for a
‘mathematical’ description of the universe
~ 484 - 424 B.C. Empodokles postulates four ‘elementary particles’: earth,water, fire and air
~ 460 - 370 B.C. Demokritos postulates ‘the atom’
~ 310 - 230 B.C. Aristarchus describes a cosmology in analogy to Copernicus2000 years after !
~ 1473 - 1543 Copernicus: direct attack on Aristoteles’ philosophy
~ 1546 - 1642 Tycho Brahe, Johannes Kepler and Galileo Galilei confirmCopernicus’ ideas
~ 1642 - 1829 Isaac Newton and Thomas Young
~ 1791 - 1867 Michael Faraday: electricity magnetism
~ 1872 - 1873 James Clerk Maxwell: ‘Unification of Electromagnetism’
~ 1896 Bequerel discovers ‘radioactivity’
~ 1900 - Max Planck, Albert Einstein: ‘The Quantum Era’
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 3
‘The Quest for Symmetry’
Matter Interaction
Interaction Force
On the scale of things:
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 4
‘Science in Art’M.C. Escher:
‘Waterfall’‘Three Worlds’
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 5
‘Art in Science’Benoit Mandelbrot:
‘Fractals’
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 6
‘Fractals in Nature’Benoit Mandelbrot:
‘Autumn forest’
‘Summer forest’
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 7
Subatomic Physics
• Strong interactions: nuclei gluons
• Electromagnetism: electrons photons• Weak interactions: radioactivity W+, W-, Z0
• Gravitation: galaxies graviton
‘The study of forces and interactions between particles’
Glashow, Weinberg and Salam:‘The Standard Model of fundamental particles and interactions’
One single theoretical model (Quantum Field Theory) that describesstrong, weak and electromagnetic interactions
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 8
Grand Unification
‘Are we able to find a direct relation between our macroscopic and microscopic world ?’
‘Big Bang Theory’
‘Elementary particles’
‘Are we able to include gravity ?’Or: ‘Can we quantise space-time ?’
Unification of forces and interactions:Search for a ‘Super Symmetry’
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 9
The ‘Big Bang’ or a possible evolution of the universe
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 10
European Laboratory for Particle Physics (CERN)
Penetrate deep into matter: Particle accelerators
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 11
2005: The Large Hadron Collider (LHC)Proton-proton collider: 7 Tera (1012) eV (4.7 1014 protons/beam)
0.999999991 speed of light
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 12
The ATLAS detector
32 m
12 m
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 13
Computer Simulation of a p-p Collision
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 14
My first visit to the UT...
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 15
…in the dark Dungeons of the TN-Building...
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 16
…with a very peculiar taste...
Bitter Blood
-Beer with body-
BRAK
UT, Enschede, 05/06/'98 Symmetries in Nature, Bob van Eijk 17
…gives me a RAMAN Feeling !
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