Rev Dr Jane Leach, Principal of Wesley House, Cambridge

Chadwick Boseman was an inspirational black actor, most famous for his portrayal of a leader of a fictional African country.

I know what you’re thinking, this is exactly like the book of Isaiah.

Quantum Mechanics is Obvious – the Movie Part 7

In this episode we see one of the reasons why complex numbers are useful in Quantum Mechanics. This isn’t the only reason why they are useful. We’ll see another one when we look at continuous probability densities.

It’s also not the only way of overcoming certain problems. QM can be formulated in the language of Clifford Algebras. (See for example “Geometric Algebra for Physicists” by Doran and Lasenby.) Since Clifford Algebras encompass complex numbers, this isn’t really that surprising.

Next week, we’ll see what our first complex operator looks like and will find that we’ve actually discovered the Pauli spin matrices.

Brian Draper, in Southampton, Associate lecturer at the London Institute for Contemporary Christianity

Everybody’s talking about it: littering the countryside. We Christians never litter because of our respect for everything the Invisible Magic Friend created (except the virus).

By total coincidence, I run a series of walking retreats in the countryside. Booking available now at very reasonable rates. You won’t find this advertised anywhere else.