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The Mathematics of Bell Ringing

This lecture will look at change ringing, which is ringing a series of tuned bells (as you might find in the bell tower of a church) in a particular sequence, and this has exciting mathematical properties. We will also ask: why are bells bell-shaped?

Boris Ord‘s King’s College Carols

Boris Ord composed one tiny Christmas carol – ‘Adam lay ybounden’. But Ord’s largest contribution to the carol genre was his work as choirmaster at King’s College, Cambridge from 1929 to 1957.

Making a Monkey out of Darwin

When Darwin finally published the On the Origin of Species, he tried to avoid controversy by ignoring human origins. Yet evolution was soon being attacked as the godless ‘monkey theory’.

Russian Piano Masterpieces: Rachmaninov

Rachmaninov is considered by many to be the greatest composer-pianist in history. But his very popularity has left the complexity and subtlety of his music underappreciated.

Data: The Past, the Present and the Future

Data structures are the critical ingredient of all good information systems. Poor data structures lead to horrendous problems of interoperability and nightmarish complexity; good ones can make the ‘uncomputable’ computable.

Understanding the Universe with AI

Over the last 30 years, digital technology produced an exponential increase in astronomical data. Within our lifetime, the entirety of the visible universe will have been mapped out: we will have seen everything there is to see. The question will then be: what does it all mean?

Cosmic Vision: Witnessing Fireworks

Accounts of occasional celestial spectacular events in past centuries have provided crucial information for modern-day astrophysicists. One such example is the so-called Great Eruption of Eta Carinae which was for a time in the mid 19th century the third brightest object in the night sky.

The Sound of Mathematics

It has been known since antiquity that there are simple “harmonic” relationships between notes that sound appealing together. This lecture introduces the mathematics of pitch, scales, and just temperament. The pitch of a sound is not its only important property.

Connected Nature

The story of the deep, biogeophysical planetary connections and how these are intensifying the effects of climate change and economic development, is told through personal research and expeditions to remote locations across the world (including some that were previously unexplored).

John Evelyn: Britain’s First Environmentalist

Air pollution, the usefulness of trees, ideas for a green belt are not concerns we associate with the 1600s. But John Evelyn, writer, diarist and gardener, was unusual. His thinking in Fumifugium (1661) about air quality, and Sylva (1664) about trees, seems astonishingly close to our own today.

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