Professor John D Barrow
What is the ultimate status of the constants of Nature?
What is their role?
Do we know why they are as they are?
Are they truly constant?
Are they everywhere the same?
Are they all linked?
Could life have evolved and persisted if they were even slightly different?
Are there other Universes where they are actually different?
These are some of the issues that this talk will grapple with. We will
look back to the introduction of the first constants of Nature and the impact
they had on scientists like Einstein and Dirac. We will also discuss
astronomical observations of the behaviour of atoms in the vicinity of distant
quasars that are probing whether some of the constants of Nature are changing
very slowly as the universe expands ages.