CNN Sanjay Gupta MD November 16, 2013 21:51:00
>> so try that on. >> they're marketed as being able to measure whether a hit is too hard. and as in eric sweeney's case, an extra set of eyes on the field. but how well do they really work? that is what scientists at this lab are trying to figure out. >> everything is green and that's what we would expect. >> a low level impact, and all the products tested have green lights. but when the helmet drops from higher up -- >> this is probably going to be over 100 gs. big hit. three, two, one. that is surprising. so nothing went off there. >> that's well into the range of concussion. you have defin...
Source: archive.org