I think the guardian article is self-explanatory. A rubber ball that has a significant velocity and thereby a great change in momentum will absolutely be dangerous for the brain. If you dig enough you will find heaps of pending cases involving ex NFL players claiming for concussion damages. This also gives enough data about the long term injuries. I wonder why those researchers left them out in their studies. If you are interested, read this survey results.
- emmitmeyer on Which is more accurate an camera or mirror?11 months ago
- Shamil on Why we need higher temperature on earth for fusion reactors?11 months ago