Enigma No. 830: Post Mix IN an inebriated state I tried to address two letters to each of five friends. I have listed my efforts below. Each envelope has four items: a first name, a surname, a house name and the town. All the correct items occurred somewhere on the ten envelopes. But on each envelope the four items which … News
We'll take the high ground … "IS there one Professor in Edinburgh pursuing science with zeal? Are they not all occupied as showmen whose principal object is to attract pupils and make money?" Thus wrote Sir David Brewster, the noted Scottish physicist and inventor of the kaleidoscope, almost a century and a half ago. The professors of Scotland appear to be … Opinion
Some of our Universe is missing IT HAS become firmly established over the past few years, at least in the minds of cosmologists, that most of the matter in the Universe is invisible. But while theorists delight in playing with mathematical models that include such exotica as cold dark matter, hot dark matter, weakly interacting massive particles (WIMPs) and mixed dark … Features
Heart of the atom "IT WAS quite the most incredible event that has ever happened to me in my life. It was almost as incredible as if you fired a 15-inch shell at a piece of tissue paper and it came back and hit you." This was how Ernest Rutherford described the experiments performed in his lab at the … Inside Science
Feedback ONE OF the unsolved mysteries surrounding the leakage of nearly 150 highly radioactive particles from the Dounreay nuclear plant on the north coast of Scotland is how and why only one of them found its way onto a public beach. Since 1983 the UK Atomic Energy Authority has found an average of 12 particles a … Regulars