Protecting the Brain from Trauma: A Home Experiment to Show We Can Do Better
September 7, 2015
If you put on a football helmet right now and smacked yourself in the head with your hands, you might notice you can hit yourself pretty hard before you start to feel pain. You could even grab a stapler or a coffee mug and hit yourself with that. If you are like me, smacking yourself in the head is the first thing you do when you put a helmet on, just to test it out.
The Sword Structure
July 20, 2015
The sword consists of two parts: the blade and the hilt or handle. Both edges of the narrow-blade sword are sharp; the handle and sword body are always straight. The hand guard is always flat and perpendicular to the blade, rather than circular or oval.