Fundamentally different theories of dark energy may be underdetermined by observation, according to a recent preprint by Sanil Unnikrishnan. Background. Dark energy was first proposed as a solution to the…
Read moreIs the cosmological metric about to flip Euclidean?
The ‘wildest excuse for cosmic acceleration’ prize so far should go, in my view, to these guys. They argue that the metric form of spacetime is about to flip from…
Read moreDoes Google’s Logo-Artist Like His Father Better Than His Mother?
Too impatient to wait until Sunday, my wife decided to investigate what the Google Logo might be this Mother’s Day, on the basis of previous years. She was upset to…
Read moreMichelson-Morley meets Quantum Mechanics
The Michelson-Morley experiment (read the original paper here) is one of the first textbook experiments that you learn about in support of the light postulate. From this postulate, together with…
Read moreNew Directions in Foundations of Physics 2008
On Friday afternoon, John Norton and I packed our bags and headed East to Washington, D.C., for the annual New Directions in Foundations of Physics conference. Here’s a little taste…
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