Khan Academy came in support of the science of PSI reduction

https://www.khanacademy.org/science...9Z/ideal-gas-laws/v/deflategate-ideal-gas-law

Kravetz and those haters must be having some sleepless nights. Khan didn't get into the wet ball though which Headsamrt showed added quite a bit more

I don't know why they are assuming a final gauge reading of 10.6, when we don't know that, just that the FBs didn't pass. Florio's source even says the gauge pressure drop was closer to 1 psi than 2 psi.

Just calculate what the 5% (or 4.7%) temp drop does if you demand the same 5% (or 4.7%)pressure drop. That clearly shows a reading that wouldn't"pass". It isn't 10.6. Using 72F & 51F (not75F and 50F) and using the actual weather-reported barometric pressure (14.61 not 14.7), you get 11.3 as the final pressure.

So losing 1.2 psi is due to gas cooling. Did it drop more? We don't know that. Seems like the wet ball effect could get you a little more, but we don't know that there is more to be explained. The message should be that we expect over a 1 psi drop from T drop, as that math is crystal clear.

Wow! What a great job by khanacademy! Simplifying, explaining what other experts missed! It will be watched by millions of kids no matter what the media has to say! After watching this, the kids will be questionsing the integrity of Patriots haters.

Rob0729 said:

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I'm glad I left that one for somebody else

No offense, but this goes to show how simple and trivial this this. Now, every 8th grade student can do this. And someone should do the calculation of why the Indy ball did not drop.

mosi said:

And someone should do the calculation of why the Indy ball did not drop.

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So, this is one of the reported "leaks" that has been getting too much play in this debate, which we now have learned has no actual basis in facts. The NFL has confirmed that the refs did not log any of the PSI values for any of the footballs pre-game, at half time or at the end of the game. Therefore, any claim that the Colts game balls "did not change at all" is wrong. There is nothing to support that.

As has already been mentioned previously, the Colts game balls could have started out at 13.5 pre-game and marked by the refs as "Passed". At half time, they could have dropped as much as 1 PSI to 12.5 and the refs would have still marked them as "Passed".

Without any documentation of where all the footballs started and what the tested at during the half, the Colts footballs cannot be used as any sort of "control" sample.

Palm Beach Pats Fan said:

I don't know why they are assuming a final gauge reading of 10.6, when we don't know that, just that the FBs didn't pass. Florio's source even says the gauge pressure drop was closer to 1 psi than 2 psi.

Just calculate what the 5% (or 4.7%) temp drop does if you demand the same 5% (or 4.7%)pressure drop. That clearly shows a reading that wouldn't"pass". It isn't 10.6. Using 72F & 51F (not75F and 50F) and using the actual weather-reported barometric pressure (14.61 not 14.7), you get 11.3 as the final pressure.

So losing 1.2 psi is due to gas cooling. Did it drop more? We don't know that. Seems like the wet ball effect could get you a little more, but we don't know that there is more to be explained. The message should be that we expect over a 1 psi drop from T drop, as that math is crystal clear.

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I don't know why he used 10.6, maybe worst case scenario?

However, I think by focusing on the magnitude of change expected as opposed to the expected end result he does a better job framing how trivial the "evidence" is.

We may not know specifically the exact margin of error for football measurements. Gauges, human error, leaks, rain, etc. Is it .5 psi? 1.0psi? Less? More?

But, we know it is a non-zero amount. There is error in both precision and accuracy here.

I think it would be a mistake for any analysis to not address this non-zero amount just because we cannot calculate exactly how much more or less than the gas law these factors played in the end result.

Therefore his analysis that the magnitude of change may seem suspicious if it strayed significantly from the gas law is reasonable, but when the magnitude of change is quite close, knowing other variables play a role it's not very suspicious at all. Furthermore, he displays in fairly straightforward laymen's terms how trivial a number we would be talking about for tampering. The rate of change expected from the gas law swamps the suspected tampering number. Is it reasonable to even think someone would tamper to remove .3psi or so? I think the answer is obviously not, far more likely that those non-zero variables account for such a trivial difference in ideal calculations.

Still funny to see Bill Nye get it wrong repeatedly. still not taking into account gauge pressure

For #DeflateGate, we use absolute temps (Rankine scale). Changing pressure 15% would mean 15% absolute temp drop = 80-deg R. Did not happen.

Clown tv "scientist"

After going up and down through pretty much the entire emotional spectrum regarding this topic, this is ultimately what I come away with in the end.

All this topic really proved, and absolutely beyond a shadow of a doubt no less, is that Joe Blow average American is really not all that smart..I think we can all agree on that point? We have all read the thousands upon thousands of dimwitted comments regarding this, so lets say this is 100% correct.

Sports Media in particular doesn`t care about integrity, also at this point that can pretty much be stated as 100% fact as well? I would say absolutely.

And you know how I know they accomplished what they set out to do all along? My own Mother who probably has NEVER watched a Football game in her entire life, wants to come over and watch tomorrow...Why? because she has seen and heard so much about this topic in her own Home, that she wants to see this game.It has peaked her interest.

So, as much as we as Pats fans hate all this drama and accusations without any proof whatsoever, the NFL still wins, small Businesses around the USA and the world for that matter also win, because more people will have small SB party`s and buy product, food/drink, etc More people will watch the SB advertising, and on and on.

The ultimate screw you for us comes in the way of a victory, and I hope the Team can deliver that for us. Personally, I am rather tired of defending the Team for the past several years, and that has nothing to do with the Patriots really, but more about joe blow dimwit, and they can all stick it where the sun don`t shine, everytime we respond to their idiocy, they also win.I know its hard to do, but ignoring them is the best thing to do, that probably bothers them more than anything we could possibly say as a rebuttal, and really it is a complete waste of time on our part.

If they REALLY want to educate themselves on any matter, its out there,especially in the electronic internet age, the only people they can blame for staying ignorant is their own damn selves.

What really pisses them off the most? We were supposed to go away after the dynasty run, BUT WE NEVER DID! 14-2 in a rebuilding year? 15 years of winning, and we could very well be back next year too, in fact I think thats probably more likely than Seattle going back again.

If I wasn`t a Patriots fan.. would probably hate the **** out of them too

We all know Bill Nye is a Hawks fan, so naturally he should have shut up because nobody is going to take him serious. The disheartening part was when Neil deGrasse Tyson jumped in with his tweet about saying the air would have needed to be 125 degrees. He then corrected himself in a facebook post using absolute pressure, stating it really would have taken 90 degrees. Of course, this was done in a long post that 95% of his readers won't read (it's much easier to read 140 characters), but at least he corrected himself.

The annoying part is how all of these people continue to use a 2psi drop as the standard. That was just a report from a bonehead in the media. Neither Nye, Tyson nor even Kahn know the actual numbers. They're all just calculating based on the media report.

As a scientist, and as someone who LOVES debating with people over things like Global Warming, you'd think Tyson would have used the facts first. His first tweet should have been how much the balls should have deflated with what we know, the actual temperatures.

With a 5% drop in Kelvin, the ball should have deflated to 11.8 psi (excluding any other factors). With those numbers, the scientists should have said "It is indeed possible for a ball to deflate due to weather, and whether or not there was foul play should be determined based on the actual figures of the football"

When people ask about the Seahawks balls, the scientists should have just said "there is no evidence to say those balls did not deflate as well"

SteveBsFan said:

We all know a

With a 5% drop in Kelvin, the ball should have deflated to 11.8 psi (excluding any other factors). With those numbers, the scientists should have said "It is indeed possible for a ball to deflate due to weather, and whether or not there was foul play should be determined based on the actual figures of the football"

When people ask about the Seahawks balls, the scientists should have just said "there is no evidence to say those balls did not deflate as well"

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A 5% drop in kelvin drops guage pressure by 5% of absolute pressure or 1.35psi approx. So from 12.5to 11.15.

Colts balls most likely were simply colder at initial pressure check. They just took them off a bus and it would take a while to warm up from just being exposed to ambient relatively dry air.

They probably pumped them to specifications in indy. Shipped them pumped up. Why would they deflate them then re inflate them in Foxboro if luck already picked out and approved the balls pre trip.

kennyb said:

A 5% drop in kelvin drops guage pressure by 5% of absolute pressure or 1.35psi approx. So from 12.5to 11.15.

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Even better. I lost a lot of respect for these celebrity scientists (like Tyson / Nye) for just coming out and reporting that way instead of saying a drop of up to xx psi was possible.

kennyb said:

Colts balls most likely were simply colder at initial pressure check. They just took them off a bus and it would take a while to warm up from just being exposed to ambient relatively dry air.

They probably pumped them to specifications in indy. Shipped them pumped up. Why would they deflate them then re inflate them in Foxboro if luck already picked out and approved the balls pre trip.

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No the Colts must be put into the position of explaining this, not us. Based on the science, it is impossible for balls kept indoors at 13.5 to stay 12.5 or above with the climactic changes. If they measured 12.5 + at the half (we don't know if they were measured) this is scientifically irrefutable proof the Colts cheated.

Dr Pain said:

No the Colts must be put into the position of explaining this, not us. Based on the science, it is impossible for balls kept indoors at 13.5 to stay 12.5 or above with the climactic changes. If they measured 12.5 + at the half (we don't know if they were measured) this is scientifically irrefutable proof the Colts cheated.

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If it was filled in indy at 50 degrees as they were preparing in an unheated dome (to prepare for playing in cold ne) it would explain the whole thing.

kennyb said:

If it was filled in indy at 50 degrees as they were preparing in an unheated dome (to prepare for playing in cold ne) it would explain the whole thing.

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Then let them explain this, not us.