How does a helmet work?
The brain is the most delicate organ in the human body, which is suspended within the skull in a fluid called the Cerebral Spinal Fluid (CSF).When the skull is hit, it accelerates and moves towards the suspended brain, until the pressures within the skull move the brain forward in the CSF. When the skull is stopped, ( as in a motorcycle accident ),the brain being suspended continues its forward motion, and depending upon the speed during impact, the forward moving brain will touch the inside of the skull and can be damaged. The brain is said, in such a case, to have suffered from linear concussion, and penetration from protruding objects and to stay fastened position in the event of an accident. Energy management, as we call it in the helmet trade, is the management of the energy that must be dissipated, so that the brain is never subjected to damage from contraction the skull. To achieve this, we construct a skull, rather a very rigid shell from fiberglass, or thermoplastic. The insid
