Building a Lego universe Activities using Lego to illustrate a range of particle interactions http://ph.qmul.ac.uk/engagement/physics-kits.

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Presentation transcript:

Building a Lego universe Activities using Lego to illustrate a range of particle interactions http://ph.qmul.ac.uk/engagement/physics-kits

Structure of the atom

Isotopes

Now build some of your own atomic nuclei mass number LEGO model atomic number symbol, name

Radioactivity

Fusion

Fusion

Fission

Fission

Build your own universe

Particle Physics A Physics Kit

Leptons

Rules for combinations Baryon: 3 quarks Meson: 2 quarks (1 quark + 1 anti-quark) No fractional charges in completed particle Proton Neutron Anti-proton Anti-neutron Hydrogen atom Helium nucleus Helium atom

Baryons (3 quarks) n Σ Σ+ Neutron charge, Q = 0 charge, Q = +1 strangeness, S = -1 Neutron charge, Q = 0 strangeness, S = 0 n Σ +

Baryons: 3 quarks 22

(1 quark + 1 anti-quark = 2 quarks) Mesons (1 quark + 1 anti-quark = 2 quarks)

Mesons: 1 quark + 1 anti-quark

More baryons (with more energy!)

More baryons (with more energy!) 26

Beta decay

‘Motion cafe’ app on iPad Stop-motion animation of: particle interactions fission fusion The Big Bang

Beta decay

Lego Particle Physics: Beta decay of Cobalt-60 http://www.youtube.com/watch?v=Ts7bQ9wsmHM

LEGO available from: http://ph.qmul.ac.uk/engagement/physics-kits or mrdaviesphysics@gmail.com

Some LEGO models made out of the correct number of up quarks, down quarks and electrons. A ‘water’ cocktail (H20) An iron (Fe) Superman (Kr)

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