Tagged: Proton

Fine-tuning fallacies - Open Parachute

Ken Perrott Nov 10, 2011

In Fiddling with “fine-tuning” I discussed the way theologians and philosophers of religion have used claims of fine-tuning of the cosmological constant erroneously. That they have taken the fact that the value of the measured cosmological constant is 120 orders of … Continue reading → … Read More

Anti-gravity - Physics Stop

Marcus Wilson Oct 28, 2009

There are some lovely physics demonstrations that get repeatedly wheeled-out for things like Open Day and visits from school groups. Things like holding a spinning bike wheel on a rotating chair (flip it over and you start rotating - conservation of angular momentum) and levitating a piece of superconductor above a magnet at liquid nitrogen temperatures.  But one thing that I've … Read More

Large Hadron Collider activity - Physics Stop

Marcus Wilson Oct 14, 2009

Activity is really hotting up (should that be 'cooling down'?) at CERN as the Large Hadron Collider is prepared again for proton-proton collisions, hopefully in November. Most of the beam tunnel is now at operating temperature (1.9 K), with the rest expected to be ready very soon. I would expect to see the collider hitting mainstream media again shortly. The latest … Read More

Everything’s relative - Physics Stop

Marcus Wilson Oct 13, 2009

What does 'big' mean? How big does something have to be in order to reasonably carry that adjective? The answer, of course, is 'it depends'.For example, I am pretty tall. But after standing next to someone much taller than me on a tram last week, I realise that maybe I am not so tall after all. I got to see what it was … Read More