Science

Tate Modern’s new Switch House extension in London has been greeted with acclaim. It is a building designed in the distorted geometry of neo-modernist cliché, and offers a breathtaking array of piazzas, shops and cafeteria, with the added attraction of a free panorama of London that is much better than the adjacent Shard’s. There has been criticism of the contents, which are more appropriate to an experimental Shoreditch warehouse than a national gallery of 20th-century art. But who cares? The Tate attracts almost five million visitors a year. League tables now dictate how we judge London visitor attractions, just as exam results are used to evaluate schools and waiting times hospitals. Last year the British Museum drew 6.8 million visits, the National Gallery 5.

William Henry Fox Talbot had many accomplishments. He was Liberal MP for Chippenham; at Cambridge he won a prize for translating a passage from Macbeth into Greek verse. Over the years he published numerous articles in scholarly journals on subjects ranging from astronomy to botany. One thing he could not do, however, was draw well — and it was this inadequacy that changed the world. While on holiday in Italy in 1832, he became so frustrated by his failure to draw Lake Como satisfactorily using a pencil and a drawing aid known as the camera lucida — his efforts were well below GCSE art standard — that he resolved to find another way to preserve such views. The results are on show in an exhibition at the Science Museum, Fox Talbot: Dawn of the Photograph.

I remember the shock, like a jolt of static electricity. One day, between taking my degree and beginning my first job, while looking through a 16th-century book about numerology that had once belonged to John Dee in the British Library, I came upon an annotation in his own neat italic hand casting up the numerical values of the letters of his name. The total he wrote down came to 666. John Dee (1527–1609) was a magus, but we must not think that this made him a loony witch. An early Fellow of Trinity College, Cambridge, teaching Greek, he acquired a reputation for learning in mathematics, navigation and astronomy. But his long pursuit was of something he knew was dangerous and which I am not convinced he always thought licit: angelic conversations.

They’ve already found a cure for the common cold. It’s called Technicolor. My first dose of it came during the Christmas holidays when I was about 12. There I was, ailing and miserable, when The Adventures of Robin Hood (1938) came on the television at the end of my bed. Nothing had prepared me for this. A Sherwood Forest that was aflame with green. Clothes that shimmered purple and blue. Olivia de Havilland’s oh-so-cherry lips. Under two hours later I cast off the duvet and leapt from the fug. The sickness had gone. I now know that this medicine, Three-strip Technicolor, was a revolutionary process, the first to properly mix the three primary colours of light — red, green and blue — so that film could capture all of the colours in nature.

‘The dominant narrative of space,’ I was told, in that strange language curators employ, ‘is America.’ Quite so. Kennedy stared at the moon and saw a promotional opportunity. Nasa’s logo was designed by the flamboyant Raymond Loewy. A PR man wrote Neil Armstrong’s unforgettable lines. Every event at Cape Canaveral (later the Kennedy Space Center) was televised, while, in the USSR, Star City was built in furtive secrecy just outside Moscow. Tom Wolfe glorified the US space programme in The Right Stuff, his boisterous 1979 masterpiece of reportage where the cowboy mentality of the fly-boys co-mingled with the technical marvels of California aerospace, myth-making the while.