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#11
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![]() Quote:
http://www.nbcnews.com/storyline/sup...tballs-n290801 From the above "I recall them having a pressure gauge in the locker room, but most often they just squeezed the balls, turned them over in their hands a few times each, and inspected the laces. I don't recall them ever rejecting one of our balls," he said. Yeah, handling the game balls and squeezing them. There's no way anyone gets that right within +- .5 psi. Then go back to HS science class. Remember the gas laws? You know, the ones that relate temperature to pressure? http://www.wcsh6.com/story/weather/2...roll/22065861/ "83,244.6 Pa is 11.8 psi, so, according to these calculations, the balls could have been under-inflated by 0.7 psi on the field, just due to the change in temperature from inside to outside." There's most of the supposed 2 psi difference. 2% error on a decent 0-25psi guage is ---- .5 psi. And on the low end of the range the error is almost always to read low. Total change+total error = 1.2 psi. If the guage wasn't 0-25, but 0-100 the error on the end of the range is 3% making the difference more like 1.5 psi. The claim is 2 psi under. Media rounding? or an actual measurement. And if the gauges the refs used were 0-100 then the markings aren't usually every psi, but every 5. Seeing the difference between 11 and 10.5 isn't easy especially if you're in a hurry - like if all you've got is halftime and you still have your normal work as well. If they use better stuff? Yeah, there's a problem with 2 psi, and the .7 from the temperature difference should have been added. But we're not hearing about what accuracy they have available. Just the hand wringing over an accusation. Steve B |
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