The Secret Museum. Molly Oldfield

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СКАЧАТЬ apples fall to the ground, even though I had heard the story many times before I’d never wondered which actual apple tree had inspired him. That was, until I saw several pieces of it behind the scenes at the Royal Society.

      Newton’s fabled apple tree once stood in the garden of his childhood home, Woolsthorpe Manor in Lincolnshire. In 1800, the inspirational tree blew over. Luckily, it re-rooted itself, and a new tree, an offshoot from the original, is still flourishing there today.

      The owner of Woolsthorpe Manor saved some pieces of Newton’s original apple tree after it blew over. Some of them are in the Royal Society archives. On a shelf down in the cool basement are two fragments, as well as two rulers and a prism made from the wood. One of the fragments is in a little pink plastic bag, because it has just been on an adventure, up into orbit aboard the Space Shuttle Atlantis in 2010. It will remain in the pink bag, because the bag is now part of its history.

      The apple wood was taken up into orbit so that it could experience zero gravity. The plan was also to drop a real apple on the space station and film whether it was subject to gravity or not. They weren’t able to do the test because an astronaut who didn’t know what they were up to – she will remain nameless – saw the apple lying around and ate it. They could hardly pop out to the shops, so they had to make do with a pear. You can watch a film of it floating.

      Keith told me the pear is flying, not because it wasn’t subject to gravity, but because the space station is falling, and the pear with it, in orbit. ‘Just look at the astronauts’ hair,’ he said. It floats above their heads.

      Also in the archives is a lock of Newton’s hair – perhaps with high concentrations of mercury in it, as a result of his alchemical experiments – and his death mask. ‘This is the closest you’ll get to Isaac Newton,’ said Keith.

      We looked at a drawing of Newton’s apple tree, sketched by Thomas Howison in the 1820s. It is of the original tree, which lies dead on the ground, and the re-rooted tree beside it. Keith had just been having a good look at it and discovered a new secret. We peered at it (have a look yourself) and could just make out the outline of Newton sitting underneath the tree. Keith had seen the picture countless times but had only just noticed the faintly drawn figure beneath it. ‘The archives are still turning up secrets,’ he said.

      On a shelf beside the pieces of apple tree sits Newton’s reflecting telescope (he donated it to the Royal Society; they lost it for a while but it turned up again in the 1730s in an instrument maker’s workshop). It has two mirrors inside, and two tubes, which you slide to focus the mirrors.

      Before Newton had the brainwave of using mirrors, looking at the stars meant holding two enormous and unwieldy lenses far apart, tied together by pieces of string. Newton mounted his old, big telescope on a maypole, which he’d bought on Charing Cross Road.

      He invented this small, wood and leather reflecting telescope while he lived in Cambridge. Later, he came to London and worked from a laboratory at the Tower of London, where he was Master of the Royal Mint. Imagine him peering up into space from his rooms inside the Tower.

      When he made his telescope he sent his idea to the Royal Society and included a drawing. I loved looking at Newton’s sketch, complete with an eye looking down into the telescope. Then I was able to put my own eye to his telescope, just as he would have done. All I could see was the wall of the basement, but I got the idea. Amazingly, centuries later, the Hubble space telescope was built using essentially the same design.

      The Royal Society owns many of the letters Newton sent over the years, explaining what he was up to. Some were expanded upon and turned into publications. The original manuscripts of these texts are here in the archive.

      We looked at the original copy of the Principia (Philosophiae Naturalis Principia Mathematica) that Newton sent away to be published. This first copy was written up by his secretary and has marginalia in Newton’s hand and in the writing of his friend Edmund Halley – of Halley’s Comet fame who paid for it to be published.

      The Royal Society was planning to cover the costs, but the publication of A History of Fishes, by Francis Willughby and John Ray, had left them out of pocket. Samuel Pepys was the Society’s president at the time and is named on the title pages of both the Principia and A History of Fishes (his diary wasn’t published until 123 years after he died).

      Willughby had been Ray’s student and the two travelled together studying and collecting birds and fish. When Willughby suddenly died, Ray saw his three books – about birds, fish and games – through the press. The twosome’s collection of birds and fish is stored at Willughby’s family home, Wollaton Hall, which, incidentally, starred as Wayne Manor in the Batman film The Dark Knight Rises.

      Back in 2010, Keith had the pleasure of showing Newton’s Principia to some Apollo astronauts – Gene Cernan, Neil Armstrong and Jim Lovell – when they visited the Royal Society. He really enjoyed their visit. ‘I am a child of the sixties; that is why I got into all of this,’ he told me.

      As they turned the pages of the tome, Gene Cernan talked about how he had experienced Newton’s third law of motion – that every action has an equal and opposite reaction – first hand, in space. When he flew on Gemini 9, he had to assemble a backpack in zero gravity, with little light, outside the spacecraft. Nothing was holding him anywhere, so as he tightened a valve, his entire body span in the opposite direction. Everything he touched would touch him back and send him tumbling back out into space. When he touched the spacecraft, it repelled him. He had trouble getting back inside and when he finally made it his boots were filled with sweat.

      From then on, NASA put hand and footholds on its space capsules so that the astronauts could anchor themselves in space. The astronauts were also trained in water so they could experience weightlessness. By the time Cernan flew to the moon with Harrison Schmitt, on Apollo 17, he knew how to get around without gravity.

      When the Royal Society lent their fragment of Newton’s apple tree to NASA astronaut Piers Sellers to take up to the space station, they also sent along a picture of Sir Isaac Newton. The crew put it in the window of the space station so that Newton could look out: they thought he would have liked the view. Imagine what Newton might have come up with, if he’d had the chance to spend time up there with them, quietly looking around at the universe getting on with what it does, and figuring out how things work.

      [Sir Isaac Newton (1643–1727)] Isaac Newton was born in Woolsthorpe, Lincolnshire. In the garden grew a Flower of Kent apple tree connected with the tale of Newton’s discovery of the law of gravitation – a story which Newton himself started.

      [Newton’s Apple Tree by Thomas Howison] If you look really closely you can see a ghostly figure of Sir Isaac Newton sitting on a branch of the fallen tree.

      [Newton’s reflecting telescope] Newton sent a sketch of his Invention to the Royal Society. I saw it in their library. He included a sketch of his eye, looking down into the telescope. I was able to put my own eye to the telescope, just as he would have done centuries ago.

      [Newton’s Principia] The Royal Society has the original proof copy of Newton’s masterpiece Philosophiae Naturalis Principia Mathematica, СКАЧАТЬ