Skip to main content
Become an Ri Member
  • What's on
  • Learning
  • Explore science
  • Christmas Lectures
  • Visit
  • Support us
  • About us
Become an Ri Member
Video Mark Miodownik standing in front of a backdrop of mountains

CHRISTMAS LECTURES Physics Technology and engineering

Size matters – Why mountains are so small (2010)

Mark Miodownik explains why the Earth’s gravity, mantle and atmosphere mean our mountains won’t grow any higher and how

Size matters – Why mountains are so small (2010) Read more
Video a white-gloved hand holding a silver dome of metal

Chemistry CHRISTMAS LECTURES Physics

Size matters – Why chocolate melts and jet planes don't (2010)

As we zoom into the microscopically small realm beneath our fingertips to explore the tiny world we have created inside mobile

Size matters – Why chocolate melts and jet planes don't (2010) Read more
Video A close-up of two ants

Biology and the human body CHRISTMAS LECTURES Physics

Size matters – Elephants can't dance, but hamsters can skydive (2010)

From the very large to the very small, size is an important factor for both living and non-living matter.

Size matters – Elephants can't dance, but hamsters can skydive (2010) Read more
Video Neil Johnson talking to a crowd of children in the Ri theatre

CHRISTMAS LECTURES Physics

Arrows of time – Shaping the future (1999)

In his fifth Lecture, Neil Johnson asks: What quantum physics reveals about the future, and will we be able to travel in time?

Arrows of time – Shaping the future (1999) Read more
Video Neil Johnson in his CHRISTMAS LECTURE from 1999

CHRISTMAS LECTURES Maths Physics

Arrows of time – Living on the edge of chaos (1999)

From traffic jams to financial markets, discover how self-organised behaviour emerge in time despite a seemingly chaotic

Arrows of time – Living on the edge of chaos (1999) Read more
Video A yellow ruler being used on graph paper

CHRISTMAS LECTURES Physics

Arrows of time – The quantum leap (1999)

In his third Lecture, Neil Johnson asks why the quantum world is so weird, and does our understanding of it have any practical

Arrows of time – The quantum leap (1999) Read more
Video A still from the 1999 CHRISTMAS LECTURE

CHRISTMAS LECTURES Physics

Arrows of time – Catching the waves (1999)

In his second Lecture, Neil Johnson explores how oscillations of sound or light can define a unit of time.

Arrows of time – Catching the waves (1999) Read more
Video Neil Johnson in his CHRISTMAS LECTURE from 1999

CHRISTMAS LECTURES Physics

Arrows of time – Back to the future (1999)

In his first lecture, physicist Neil Johnson looks into the relativistic nature of time.

Arrows of time – Back to the future (1999) Read more
Video Frank Close speaking in front of a graphic of three cars with different speed limits listed next to them

CHRISTMAS LECTURES Physics

The cosmic onion – An hour to make the universe (1993)

In his final lecture, Frank Close looks at the symmetry of the early universe and the reasons behind its current asymmetrical

The cosmic onion – An hour to make the universe (1993) Read more
Video A still of Frank Close in his 1993 CHRISTMAS LECTURE

CHRISTMAS LECTURES Physics

The cosmic onion – Antimatter matters (1993)

Before the Large Hadron Collider there was the Large Electron Positron collider, the largest lepton accelerator ever built.

The cosmic onion – Antimatter matters (1993) Read more

Pagination

  • Previous page ‹‹
  • Page 21
  • Next page ››
Back to top

Subscribe to The Ri Newsletter

Sign up now

About the Ri

The Royal Institution is an independent charity dedicated to connecting people to the world of science.

Contact us What we do

About us    Jobs

Venue hire

Make your next event one to remember at our unique central London venue, steeped in 200 years of science history.

Find out more

Support us

Support us in our charitable mission to create opportunities for the public and scientists to explore science together.

Donate online Join the Ri

More ways to support

The Royal Institution, 21 Albemarle Street, London W1S 4BS

Find us Museum Licensing Shop

The Royal Institution of Great Britain was granted a royal charter in 1800 and is registered as a charity in England and Wales (227938).

© Royal Institution 2025
  • Terms and conditions
  • Web accessibility
  • Policies
  • Safeguarding

The CHRISTMAS LECTURES® are a registered trademark