It’s intriguing how we always talk about stuff like radio, microwaves, light, x-rays and the rest – as if all these were different things. Well guess what – they’re not. They’re all exactly the same thing. Electromagnetic energy. That’s it, really. Well, there are differences – as we’ll see in this post. But in terms… More Explaining the electromagnetic spectrum in less than 550 words
How fast is time? If you’re trapped in the office or enduring a maths class or something dull you’d no doubt tell me it drips past. Just as you’d also tell me it moves damn fast if you’re enjoying the latest Star Wars movie. But that’s personal perception of time. To physicists, no matter how… More Einstein’s cool way to make time go slower
Some of the ‘brain teaser’ puzzles doing the rounds at the moment annoy me. The problem is that if you don’t know the parameters on which the question is posed, you can’t get the ‘right’ answer. Take the one involving apples (10 points each), bananas and coconuts. Depending on how you read it, a banana… More Why I get annoyed with Facebook brain-teaser puzzles
It occurred to me the other day that one dandy way to clean a microwave oven is to chuck a cake of soap into it and blast it on ‘high’ for a few minutes. It was a better idea than my previous microwave-inspired trick which involved dismantling the rotating platter and using egg whites and… More Why I don’t do fun science tricks with microwave ovens
About 1.3 billion years ago, two black holes collided – and the whole fabric of space-time rang like a bell. Last September, researchers in the US detected the gravitational ripples. They announced it this week – and THAT, my friends, is awesome news. It’s not just the fact that Albert Einstein predicted them 100 years… More Einstein was right…again. Gravitational waves rule!
One of the genius moments in Kubrick’s 2001: A Space Odyssey comes when Dave Bowman, locked out of the Discovery in a ‘pod’, without his suit helmet, re-enters anyway, via the emergency airlock. He’s unprotected in vacuum – but he doesn’t die instantly, or freeze, or explode the way people usually do in movies when… More What happens when you wake up naked in outer space…
I have always been fascinated by the human ability to make what we imagine seem real. And then to take that reality and imagine something else built on it, and so on. Eventually, we build a ‘reality’ that is built not on physical evidence, but on our chain of imagined concepts – which society picks… More Imaginings about imaginary imagination, tulips and climate