The joy of physics
Physics is said to go deeper than other sciences into the riddle of existence. The laws of physics — gravity, energy, motion, time — underpin those of chemistry, astrophysics and meteorology combined. So an understanding of the world requires a basic understanding of physics; something which has just become a little easier thanks to a cult book by an Italian academic which is due to be stuffed into an extraordinary number of stockings this Christmas. Seven Brief Lessons on Physics, by Prof Carlo Rovelli, has already sold more copies in his native Italy than Fifty Shades of Grey. The English translation has become Penguin’s fastest-selling science debut ever. In less