Chris Parkes

Victor WeisskopfVictor Weisskopf1908-21/4/20021908-21/4/2002

Quantum mechanics pioneerQuantum mechanics pioneer Assistant to Pauli, Bohr, SchrAssistant to Pauli, Bohr, Schröödinger dinger Manhattan Project, later peace campaignerManhattan Project, later peace campaigner CERN Director GeneralCERN Director General

"When life is very bad, two things make life worth living – Mozart and quantum mechanics."

Chris Parkes

Anti-Hydrogen – CERN Press release Anti-Hydrogen – CERN Press release 18/9/200218/9/2002

Anti-protons, Anti-protons, anti-electrons anti-electrons (positrons) (positrons) standard tools in standard tools in particle physicsparticle physics

BUT first BUT first production of production of anti-atomsanti-atoms

Do they behave Do they behave same way as same way as atoms ?atoms ?

ATHENA

Charged particles stored by electromagnetic fields

But not neutral atoms

Anti-H atoms annihilate on walls of vessel

Nature   Vol. 419, p 456 - 459 (03 Oct 2002)

Chris Parkes

Athena Video

Chris Parkes

CERN intro. video

Chris Parkes

Chris Parkes

Quantum UncertaintyQuantum Uncertainty Max Planck – Inventor of QM ?Max Planck – Inventor of QM ? Black Body Radiation Eqn (1901)Black Body Radiation Eqn (1901)

Energy emitted in bundles of energy Energy is QUANTISED Hence birth of QM….

But actually….But actually…. The paper does not stress quanta, never says E=nhv “a purely formal assumption”, Planck 1931 In 1901 nobody noticed the quanta ! Historical revisionism!

So what was first “Quantum” paper ? 1905, Photo-Electric Effect, Einstein Realised quantum nature of Planck’s theory

Chris Parkes

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