Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...

(via Veritasium) The story of a controversial physics question on the qualifying exam for the 2014 US Physics Olympiad team. How does a uniform cable beneath a helicopter hang?

With neon-colored ear plugs clamped tight, Conroe High School students gripped the aluminum bleachers as 124 decibels of roaring sound and wind heralded a recent physics lesson — an Apache helicopter.