Tag: Albert Einstein

Wormholes and quantum entanglement
View image  gettyimages.com Been a while… There is a fascinating article in this week’s New Scientist about the idea that quantum mechanics and general relatively could be linked via the idea of the “wormhole” – a fold in spacetime that links what appears to be two very distant parts of the universe. The article […]

Why we’ll never meet aliens
Well, the answer is pretty plain: Einstein‘s theory of general relativity – which even in the last month has added to it’s already impressive list of predictive successes – tells us that to travel at the speed of light a massive bodyÂ would require an infinite amount of propulsive energy. In other words, things are […]

Lorentz and Einstein
When I was at York University earlier this week I took a break from computer science to remind myself of some of the basics of (special) relativity and was struck, while reading the opening few pages of Rindler’s Essential Relativity: Special, General, and Cosmological (which would appear to be the set text at York), just […]

How random is random?
What is a truly random event? We are used to the idea that flipping a coin is likely to generate a random sequence of heads or tails but, of course, it is perfectly possible to predict, using the rules of classical mechanics, the outcome of a series of coin tosses if we know the values […]

If it wasn’t for those pesky neutrinos
Neutrinos have proved to be nothing but trouble for scientists over the years. They could not detect them from the Sun (where they are produced as a byproduct of fusion), then they did or did not have mass. Now, it seems, they travel faster than light and are threatening to overturn the apple cart of […]