Complex square roots

How to take the square root of a complex number — and discover a beautiful new surface in the process.

Euler's formula

There are a million things in maths named after Leonard Euler. Here's a beautiful formula involving complex numbers.

Going with the flow: are lateral flow tests useful?

Lateral flow tests have become a common feature in our lives. What impact can they have on managing COVID-19?

Where are England footballers born?

Which region of England produces the most England players?

Maths in a minute: The Wells-Riley model

How do you calculate your risk of catching an airborne disease?

Maths in a Minute: Computational fluid dynamics

The mathematical equations governing fluid flow may have no known solutions, but maths still has the answers!

The Delta variant: What do we know?

As the Delta variant is worrying the UK, researchers from the JUNIPER consortium have published all they know about it.

A breath of fresh air

Could COVID-19 change our expectations for clear air indoors?

Maths in a minute: The positive predictive value

When you receive a positive test result for a disease, the chance you actually have it depends on how common the disease is.

Happy birthday Quicksort!

Quicksort is a famous algorithm which celebrates its 60th birthday this year. We explore its clever workings.

Happy birthday Quicksort: Starting with bubbles

Next month sees the 60th birthday of a famous algorithm called Quicksort. Its inventor Tony Hoare told us that it all started with bubbles.

The shower equation: Dealing with delay

Many processes, including climate change and the spread of COVID-19, involve a delay. Here's a beautiful equation designed to model such processes.

  • Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words.