Controversy: Deflate gate. Scentific explanation (legal, accuse, highway, how much)

[BentBow]

Can a scientific approach be made to this deflated football deal?

Filled(who knows how much moisture introduced: ambient conditions inside the ball) and officially verified/inspected in the heated locker room and stored to acclimate to the heated facilities before game time.

Now take these balls into the much cooler temperatures and cool the trapped air inside the ball.
The pressure is physically going to drop inside the ball to what it was in the heated facilities it was aired and stored prior to the game.

Not to mention the humidity levels inside the ball are going to rise. High humidity( a lot of moisture in the air) is a low pressure zone.

Your car tires are a perfect example of cooling and heating air that is trapped inside.
Drive your car. Feel your tire immediately after highway travel. It is warm but not hot to the touch.
A car tire can gain or lose 5-lbs. of pressure in a 30º-f change in temperature.


Remember pressure is not volume the air occupies, as it is heated and cooled.

[SourD]

ONLY the Pat's balls were deflated not the Colts'

[pknopp]

Originally Posted by SourD

ONLY the Pat's balls were deflated not the Colts'

Right. This is the last I will say on this but if there was a scientific explanation, that explanation would have affected the balls on both sides of the field. It doesn't seem to have.

[BentBow]

Balls on the upper level of the scale compared to balls on the lower scale to be legal?
The NFL dropped the ball(pun intended) on the certified eligibility of the balls to be used.
How do they get out of official hands for periods of time, after certification for eligibility?
Has the NFL always let the Fox watch the hen house when so much is at steak?

[rbohm]

i remember back when oakland had a great punter by the name of ray guy. ray would kick some seriously long punt, with some serious hang time, and the result was that the raiders were accused of filling the balls with helium so the ball would travel further. that was also proven to be rubbish. unless you can prove that the balls used by the patriots were indeed deflated, and the ones used by the colts were not, this is pure conjecture on every ones part to show why the colts got their butts kicked by the patriots, instead the real reason why and that was the colts got outplayed at every turn.

[TrapperJohn]

I hate the Patriots but think "deflate gate" reeks of sore losers.

[GregW]

Pressure x Volume = Number of molecules x Gas constant x Absolute temperature

Reduced to as the mass of the gas and the composition of the gas are very close to the same to:

Pressure x Outside Temp / Inside Temp (Temp in Deg. above absolute zero Rankin (Fahrenheit)

As I do not know what the regulation pressure is supposed to be I will use 10 pounds/sq. in. and an inside temp of 70 deg. F and an outside Temp of 35 deg. F.

10 x (459 + 35 deg. K) = 10 x 494 = 5,290 x (459 + 70 deg. K) = 10 x 494/529 = 10 x .93 = 9.3 psi pressure at outside temperature of 25 deg. F. Thus the pressure of the gas inside the footballs should have declined 7% as the balls cooled to the outside temperature.

[Bulldogdad]

Scientific explanation?

Manual evacuation of the pressure vessel medium.

[PuddingPops]

My question is, if the football performs better with less PSI... why don't regulations designate it to be filled with less air to begin with?

In other words, would the NBA ever require basketballs to be partially deflated for each game? Of course not, because it works better if it's full. A full basketball performs optimally.

So if a football is easier to catch and flies further with slightly less air... then how about revising the rules?

In that case, there would be no way to "cheat" because the football would already be filled to it's peak PSI performance. That's why something feels a little "off" about this whole controversy to me.

[cb at sea]

Maybe the Patriots balls were in the shade!