Plus Blog
December 16, 2011
Plus has been working with lots of fascinating, funny and famous mathematicians over the years. And since we've started producing podcasts in 2007, we can bring their voices directly to your ears. From Roger Penrose and Paul Davies to the science writer Simon Singh and the engineers behind the London 2012 velodrome, find out what they have to say. |
December 15, 2011
Having trouble wrapping your presents? Paper always ends up in a mess? Well, whatever geometrical shape you've accidentally produced, we bet it's not as wonderful as these favourites: Take an illustrated tour of an extraordinary geometric construction: the Klein bottle. What do butterflies, ketchup, microcellular structures, and plastics have in common? It's a curious minimal surface called the gyroid. Sometimes the best way to express a scientific idea is through an image that grabs the eye and invites viewers to wonder what they're seeing. Artist Luc Benard and mathematician Richard Palais have done exactly this with their winning illustration "Still Life: Five Glass Surfaces on a Tabletop". That geometry should be relevant to physics is no surprise — after all, space is the arena in which physics happens. What is surprising, though, is the extent to which the geometry of space actually determines physics and just how exotic the geometric structure of our Universe appears to be. This article explores the famous Calabi-Yau manifold. |
December 14, 2011
Snow flakes, ice crystals, beautiful round baubles — Christmas is the time of symmetry, so here's a few articles to celebrate it! Symmetry rules Through the looking-glass Beautiful symmetry provides glimpse into quantum world They never saw it coming |
December 13, 2011
Maths is a creation of our brains, so how come it describes the world around us so amazingly well? How is it that ideas from pure maths suddenly find real-world applications decades or even centuries after their discovery? Here are some articles exploring the "unreasonable effectiveness" of mathematics. When it comes to describing natural phenomena, mathematics is amazingly — even unreasonably — effective. This article looks at an example of strings and knots, taking us from the mysteries of physical matter to the most esoteric outpost of pure mathematics, and back again. It has often been observed that mathematics is astonishingly effective as a tool for understanding the universe. But why should this be? Is mathematics a universal truth, and how would we tell? The philosophy of applied mathematics We all take for granted that mathematics can be used to describe the world, but when you think about it this fact is rather stunning. This article explores what the applicability of maths says about the various branches of mathematical philosophy. |
December 12, 2011
You might not have thought it, but while you sit contentedly digesting your turkey and gazing at the telly, your brain is keeping up the hard work, making sure that everything in your body goes according to plan. And to understand this most amazing of nature's creations you need maths. Here are some of our favourite articles on brains, human and animal. Saying that someone is a chaotic thinker might seem like an insult, but, as this article shows, it could be that the mathematical phenomenon of chaos is a crucial part of what makes our brains work. Catching sight of a cockroach tends to make us behave chaotically, what with the running and screaming and throwing of shoes. But it appears that chaos might actually explain how we, and the cockroach itself, behave. The human brain faces a difficult trade-off. On the one hand it needs to be complex to ensure high performance. On the other hand it needs to minimise what you might call wiring cost — the sum of the length of all the connections — because communication over distance is metabolically expensive. It's a problem well-known to computer scientists. And it seems that market-driven human invention and natural selection, faced with similar challenges, have come up with similar solutions. Uncoiling the spiral: Maths and hallucinations Think drug-induced hallucinations, and the whirly, spirally, tunnel-vision-like patterns of psychedelic imagery immediately spring to mind. But it's not just hallucinogenic drugs that conjure up these geometric structures. People have reported seeing them in near-death experiences, following sensory deprivation, or even just after applying pressure to the eyeballs. So what can these patterns tell us about the structure of our brains? And you can find out more about mathematics and the biomedical sciences in our package Do you know what's good for you?. |
December 11, 2011
It may be Sunday but that's no excuse for resting your brain. Plus has been grappling hard with the strange weirdnesses of quantum mechanics lately, and we think that you should too. So get ready to be mind-boggled. The podcast: Does quantum physics really describe reality? With counterintuitive ideas such as superposition and entanglement, quantum mechanics doesn't seem to resemble reality as we know it, yet quantum physics is an incredibly successful theory of how the physical world operates. Plus spoke to Andrew Briggs, John Polkinghorne, Nicolas Gisin, David Wallace, Roger Penrose and Andrea Morello about how we can resolve the mysteries of quantum physics with our experience of reality. And we found out why quantum physics is just like riding a bike... Flying home with quantum physics Quantum mechanics is usually associated with weird and counterintuitve phenomena we can't observe in real life. But it turns out that quantum processes can occur in living organisms, too, and with very concrete consequences. Some species of birds use quantum mechanics to navigate. Studying these little creatures' quantum compass may help us achieve the holy grail of computer science: building a quantum computer. You can also listen to the accompanying podcast. When it comes to the science of the very small, strange things start happening, and our intuition ceases to be a useful guide. Plus finds out about the crazy quantum world, and spin that a politician would die for. String theory: From Newton to Einstein and beyond Over the last few years the words string theory have nudged their way into public consciousness. It's a theory of everything in which everything's made of strings. Find out how these tiny strings offer hope for reconciling quantum mechanics with Einstein's theory of relativity. One of the many strange ideas from quantum mechanics is that space isn't continuous but consists of tiny chunks. Ordinary geometry is useless when it comes to dealing with such a space, but algebra makes it possible to come up with a model of spacetime that might do the trick. Quantum mechanics say that some physical processes are fundamentally random. The perfect set-up for a lottery! |