Photons are not to Be Taken Lightly

Last night I was granted one of those magical bedtime conversations with Simon that we share every now and then, about the nature of the universe. We were reading Randall … Continue reading Photons are not to Be Taken Lightly

Newtonian GPS would place you on the wrong planet!

Simon explains why our modern satellite navigation (the Global Positioning System or GPS) is a great experimental proof for Einstein’s relativity theory and what would happen if the software calculated … Continue reading Newtonian GPS would place you on the wrong planet!