Elephants rarely get cancer: less than 5% of captive elephants die of cancer, compared to 20% of humans. Elephant genomes have at least 20 copies of the tumour suppressor, p53, which may explain their low cancer rates relative to humans, who have only one copy.
Physics – my everyday world Monday morning and spring is in the air. On the short trip between my Particle Physics and Astrophysical Fluid Dynamics lecture locations I hand in some work and photograph a sea of daffodils, nodding at me in the breeze. In the following lecture we cover blast waves: gas from supernovae and other massive explosions moving through space faster than the speed of sound. Then it’s back to college for a quick lunch before a Particle Physics supervision, where we talk about how quarks and gluons interact. The rest of the afternoon is spent doing something that as a physicist I’ve not previously been used to: reading! I’m doing a research review which involves reading papers on the research done into single photon sources – devices that produce one particle of light at a time – and then summarising the recent developments in the area. It’s been exciting to get deep into an area of research that previously I knew nothing about. I chose Natural Sciences at Cambridge out of a kind of greed for knowledge: why study just one science when you had the opportunity to do more? I’ve never regretted that choice. The only hardship is having to decide what to give up along the way, something that continues to happen as I’ve begun specialising in my third year. I really value the wider insight I’ve been given by being able to study Chemistry and Materials Science alongside the Physics. So much science happens at the boundaries of these different disciplines, so understanding where your studies sit in the wider context of scientific knowledge is very important.
However, Physics has always been the subject that has captivated me the most. In my more wildly romantic moments I’ve declared that I must KNOW about the world and how it works; that to study Physics is to plumb the depths of reality. Unsurprisingly, Physics day-to-day isn’t nearly as glamorous as that makes it sound, but the fact that I’ve maintained that idealised view through nearly 3 years of worksheets and practicals indicates that there must be something special about it.
Physics isn’t everyone’s cup of tea. It can be difficult to get your head around, involves lots of maths and areas like quantum mechanics can seem so divorced from the real world that it’s easy to condemn it as too complicated, boring and irrelevant. But if you have even the smallest interest in physics I would encourage you to take it a bit further. It started for me by shining laser pointers onto fluorescent paper and wondering why the green one made it glow but the red one didn’t. I soon realised Physics wasn’t so bad and now there’s nothing I’d rather do!