Tag Archives: physics

More reading notes

  • Christopher Matthew, A Storm of Spears: Understanding the Greek Hoplite at War. The most important conclusion from this is how the Greeks wielded their spears. Despite all the pictures, they did not hold them over their heads with a back-handed grip. Instead, they held them with the butt of the spear tucked under their armpits. This allowed for much greater reach and strength. Lots of good experiments with re-enactors.

  • Continue reading

Nobel Vintage

Fundamental Physics Prize Co-Winner Sells No Wine Before Its Time

Brian Schmidt is the world’s only vintner with a Nobel Prize in physics, specializing in pinot noir because the climate and soil (or terroir) is especially well suited for that varietal. He and is wife own a four-star winery called Maipenrai (Thai for “It’s all right”) in Sutton, New South Wales, near Canberra.

Relativity is Right on Time,…

… Again

Special relativity predicts that a twin in a high-speed rocket, as viewed by his Earth-bound brother, will have a slower-ticking clock. A precise test of this time dilation, first performed in 1938, involves observing the frequency shift—or “ticking” change—in the electronic transitions of fast-moving ions. An update of this type of experiment using lithium ions has now verified special relativity’s prediction with unprecedented accuracy—a result that provides additional constraints on quantum gravity models.