In Our Time2 Maj 2002

The Physics of Reality

Melvyn Bragg examines the physics of reality. When Quantum Mechanics was developed in the early 20th century reality changed forever. In the quantum world particles could be in two places at once, they disappeared for no reason and reappeared in unpredictable locations, they even acted differently according to whether we were watching them. It was so shocking that Erwin Schrodinger, one of the founders of Quantum Theory, said "I don’t like it and I'm sorry I ever had anything to do with it." He even developed an experiment with a cat to show how absurd it was. Quantum Theory was absurd, it disagreed with the classical physics of Newton and Einstein and it clashed with our experience of the everyday world. Footballs do not disappear without reason, cats do not split into two and shoes do not act differently when we are not looking at them. Or do they? Eighty years later we are still debating whether the absurd might actually be true. But why are features of quantum physics not seen in our experience of everyday reality? Can the classical and quantum worlds be reconciled, and why should reality make sense to us? With Roger Penrose, Emeritus Rouse Ball Professor of Mathematics, Oxford University; Fay Dowker, Lecturer in Theoretical Physics, Queen Mary, University of London; Tony Sudbery, Professor of Mathematics, University of York.

Det här avsnittet är hämtat från ett öppet RSS-flöde och publiceras inte av Podme. Det kan innehålla reklam.

Avsnitt(1092)

Joseph Roth

Misha Glenny and guests discuss one of the great writers on Central Europe after the first world war and on the dying of the old orders with the collapse of the Austro-Hungarian empire. As a German s...

4 Juni 55min

Cybernetics

Misha Glenny and guests discuss cybernetics – the field of study which gave us the prefix ‘cyber’ and helped lay the foundations for the information age. After the Second World War, cybernetics emerge...

28 Maj 52min

Indian Indentured Labour

Misha Glenny and guests discuss how, after the abolition of slavery in the British Empire in 1833, sugar planters recruited workers from India to replace or compete with their formerly enslaved labour...

21 Maj 51min

M.C. Escher

Misha Glenny and guests discuss the work of Maurits Cornelis Escher (1898-1972), the graphic artist and printmaker best known for his impossible buildings, paradoxical perspectives, and repeating geom...

14 Maj 55min

Handel's Messiah

Misha Glenny and his guests discuss the most famous oratorio of George Frideric Handel (1685-1759) and his librettist Charles Jennens (1700-1773). For his libretto, Jennens drew from Old and New Test...

7 Maj 54min

The Spanish-American War 1898

Misha Glenny and guests discuss a turning point in world affairs in 1898 that left Spain greatly reduced as an imperial power and the US the owner of the Philippines, Guam and Puerto Rico, with a sign...

30 Apr 55min

Silicon

Misha Glenny and guests discuss the physics, biology and chemistry of the element silicon which is at the heart of some of the most useful and beautiful objects on the planet. While it is still being...

23 Apr 52min

Dadaism

Misha Glenny and guests discuss the provocative artistic phenomenon that first startled audiences in 1916 in Zurich. There, at the Cabaret Voltaire at the Holländische Meierei on the Spiegelgasse, Emm...

16 Apr 50min