I have just returned from a network meeting on structures inside cells, in Cambridge. I thoroughly enjoyed it. It was quite wide ranging and including a lot of quite diverse stuff going on inside our cells, and included a talk on part of our immune system.
Moore’s Law in reverse
Moore’s Law is that, roughly speaking, computer chips double in speed every two years. It is approximate of course but indeed the power of computers has increased exponentially over the last fifty years, transforming our society. Moore’s Law is pretty well known, but until a talk at a workshop in Vienna this week, I had not heard of Eroom’s Law.
Five hours of questions on fourteen courses
Yesterday was the third of this year’s open days for prospective students. I was on campus for about five hours, fielding questions from prospective students and their parents. It was fun, and it is a real pleasure to help people. Particularly if the parents did not go to university themselves the whole business of applying to university can be a bit intimidating and confusing. So, on Open Days staff and students are there to help.
How your calculator works is surprisingly controversial
The calculator to the left is solar powered, via the little solar panel at the top right. Small cheap solar panels like those in calculators are made from amorphous silicon, because its a lot cheaper than its more efficient but pricey, cousin crystalline silicon. In crystalline silicon the silicon atoms are arranged in a regular crystal lattice — as it happens the arrangement is similar to that of water molecules in ice.
The global village and our poor estimation of risk
I am reading Risk by Dan Gardner. It is largely about how rubbish people are at estimating risks. This is nothing new, we have had good data how badly we estimate risks for decades. And arguably politicians and marketers have been exploiting it for a lot longer.But the book is well written, and is clear on why we should expect this: because we are the product of evolution.
Naturally sweet
After years of being dimly aware that there are two types of diet Coke*, the Coca-cola company has decided to further confuse me by launching a third: Coke Life. Coke Life’s tag line is “sweetness from natural sources”. The source is shown to the left, it is the stevia plant. This produces an extract, also called stevia, that contains a bunch of molecules called steviol glycosides, that taste very sweet, so only small amounts are needed to sweeten drinks. So although if you drink Coke Life your body will metabolise the steviol glycosides and so produce energy, as such small amounts are needed these calories are pretty negligible.
You are safer in hospital on a weekend
The UK’s Secretary of State for Health, Jeremy Hunt, spent part of last week annoying those working in the NHS. He quoted a couple of numbers in support of his contention that the contracts of consultants should change. One was from a 2012 paper by Fremantle et al. in the Journal of the Royal Society of Medicine. In his speech he said: “You are 15% more likely to die if you are admitted on a Sunday compared to being admitted on a Wednesday.” Compare this with: “Thus for every 100 deaths among patients admitted on a Wednesday, we would expect 116 among otherwise similar patients admitted on a Sunday”, from the discussion section of Fremantle et al.. The number refers to deaths within 30 days of admission to hospital. So Hunt’s sentence is a fair reflection of something Freemantle et al. said.
What’s the best degree?
The Atlantic magazine has an interesting article entitled Rich kids study English. The data is American but I guess the findings may well apply to the UK too. Basically, the mean income of the parents of those who studied English is higher than those who did physics and chemistry degrees. The difference is not huge but the parents of physics and chemistry students earn about £10,000/year more.
Celebrating the class of 2015
Our physics students graduated, in Guildford Cathedral, on Wednesday afternoon, and I was one of the physics academics in the academic procession (= academics that file in two-by-two up the aisle after the Chancellor and other dignitaries). It was great to see our students graduating. We took them in as fresh-faced teenagers three or four years ago, and now there they were in suits/posh-frocks, and gowns, getting their degrees. For the graduates, it is a reward for the all the report writing, tedious exam revision, and for academics it does make all the tedious exam marking seem worthwhile. So good all round.
Ever wondered why Silicon Valley is in California?
Silicon Valley, the part of California just south of San Francisco may be home to the largest concentration of hi-tech firms on the planet: Apple, Google, Intel, …. We take this for granted, as this has been true for a while. But I am reading Broken Genius, a biography of Bill Shockley. Perhaps more than anyone, Shockley is responsible for Silicon Valley being in California.
Chance & Necessity 