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Video Carl Sagan smiling with audience of children during CHRISTMAS LECTURES
CHRISTMAS LECTURES Physics

The planets – Mars after Viking (1977)

Carl Sagan asks, is there life on Mars?

The planets – Mars after Viking (1977) Read more
Video A still of Carl Sagan during his CHRISTMAS LECTURE in 1977
CHRISTMAS LECTURES Physics

The planets – Mars before Viking (1977)

Carl Sagan views Mars through the eyes of Mariner 9.

The planets – Mars before Viking (1977) Read more
Video A still of Carl Sagan during his 1977 CHRISTMAS LECTURE
CHRISTMAS LECTURES

The planets – The history of Mars (1977)

Carl Sagan explores how humans have studied the red planet.

The planets – The history of Mars (1977) Read more
Video A still of Carl Sagan during his CHRISTMAS LECTURE
CHRISTMAS LECTURES Physics

The planets – The outer solar system and life (1977)

Carl Sagan asks whether the origin of life is a cosmic commonplace.

The planets – The outer solar system and life (1977) Read more
Video A still of Carl Sagan during his CHRISTMAS LECTURE
CHRISTMAS LECTURES Physics

The planets – The Earth as a planet (1977)

Carl Sagan explores our place in the solar system.

The planets – The Earth as a planet (1977) Read more
Video George Porter speaking in the Ri theatre
Chemistry CHRISTMAS LECTURES Physics

The natural history of a sunbeam – Survival under the sun (1976)

George Porter looks at how sunlight powers sustainable energy sources.

The natural history of a sunbeam – Survival under the sun (1976) Read more
Video George Porter spinning a small golden fan in the Ri theatre
Chemistry CHRISTMAS LECTURES Physics

The natural history of a sunbeam – Making light work (1976)

Sir George Porter looks at thermodynamics and its role in helping power our lives.

The natural history of a sunbeam – Making light work (1976) Read more
Video George Porter speaking in the Ri theatre
Chemistry CHRISTMAS LECTURES Technology and engineering

The natural history of a sunbeam – Candles from the sun (1976)

Man-made light and fuel sources are examined in this Lecture by Sir George Porter.

The natural history of a sunbeam – Candles from the sun (1976) Read more
Video George Porter speaking, in from of a chalk board with equations he has written
Chemistry CHRISTMAS LECTURES Physics

The natural history of a sunbeam – A leaf from nature (1976)

Sir George Porter looks at how leaves process light for food.

The natural history of a sunbeam – A leaf from nature (1976) Read more
Video George Porter at the Ri theatre desk, from above
Chemistry CHRISTMAS LECTURES Physics

The natural history of a sunbeam – Light and life (1976)

Sir George Porter explores the role the sun plays in creating new life.

The natural history of a sunbeam – Light and life (1976) Read more

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