Tag Archives: deflategate

Theoretical vs. Experimental Physics: Quien Es Mas Macho?

by FrankieMarx Posted on January 23, 2016

Mother Jones

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Warning! I have not followed Deflategate except in passing.1 I don’t have the kind of grassy knoll knowledge of what happened that lots of people seem to. The naive question that I’m about to pose may inspire jeers in those of you who have immersed yourselves in it.

Anyway: the first thing that I and thousands of other geeky types thought of when Deflategate first burst onto the scene was the Ideal Gas Law. I didn’t actually try to calculate anything, but I remember vaguely thinking that the temperature probably dropped about 5 percent between the locker room and the field, so the pressure in the footballs might plausibly have dropped about 5 percent too. Then again, maybe the volume of the footballs changed slightly. Hmmm. Then I got sick and didn’t care anymore—about Deflategate or anything else. Joe Nocera writes about this today:

John Leonard is a professor at the Massachusetts Institute of Technology….When the Deflategate story broke after last year’s A.F.C. championship game between the New England Patriots and the Indianapolis Colts in January, he found himself fixated on it….“Of course, I thought of the Ideal Gas Law right away,” Leonard says, “but there was no data to test it.”

….In May, the data arrived….Numbers in hand, Leonard went to work. He bought the same gauges the N.F.L. used to measure p.s.i. levels. He bought N.F.L.-quality footballs. He replicated the temperatures of the locker room, and the colder field. And so on….The drop in the Patriots’ footballs’ p.s.i was consistent with the Ideal Gas Law.

By early November, he had a PowerPoint presentation with more than 140 slides….A viewer who watched the lengthy lecture edited it down to a crisp 15 minutes….It is utterly convincing.

This is what’s always puzzled me. You don’t need to be an MIT professor of Measurement and Instrumentation to get a good sense of what happened, and you don’t need to spend a year pondering the minutiae of the Ideal Gas Law and writing 140 slides about it. Get a bag of footballs, inflate them to 12.5 psi, and take them outside on a 50-degree day. Wait an hour and measure them again. Maybe do this a few times under different conditions (wet vs. dry, different gauges, etc.). It would take a day or two at most.2 The league office could have instructed the referees to do this quick test just to see if 11.3 psi footballs were plausibly legal, and that might have been the end of it. Why didn’t that happen? Why didn’t lots of people try this? Even if you only have one football to your name, it wouldn’t be hard to at least get a rough idea. Inflate it, put it in your refrigerator for an hour, and then remeasure it.

Since I wasn’t paying attention, it’s quite possible that lots of people did this. Did they? Did the league? What happened here?

1Yuk yuk.

2Because I’m an optimistic guy, I’m just going to assume that this would be done in at least a minimally rigorous way. Nothing that would be necessary for publication in Nature. Just good enough to satisfy Mr. Lantz, my high school physics teacher.

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Theoretical vs. Experimental Physics: Quien Es Mas Macho?

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Bill Nye Slams Bill Belichick: "What He Said Didn’t Make Any Sense"

by EmiliaSchwindt Posted on January 25, 2015

Mother Jones

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Let me start by saying, I don’t know anything about football. I’m from Los Angeles. We don’t have a football team. I went to NYU where the most popular sporting event is the Spring production of Damn Yankees. Up until very recently I thought football was soccer but with players who didn’t have feet, instead their legs ended with sort of rounded nubs—”balls,” if you will—and I thought it was so awful that millions of Americans get together every Sunday—which is the Lord’s day, by the way—to force disabled folk to compete in some sort of blood sport. It’s not that though. It turns out it’s the real life version of NFL Blitz, which it turns out isn’t just a video game. It’s based on a real thing. Anyway, what am I talking about?

Oh yeah! #Deflategate! The Patriots! (Why are they called “the Patriots”? I get that it’s about the American Revolution and Massachusetts played a key role in that but come on, we’re all patriots here, FOX News. Even the Bengals fans.) I don’t like the Patriots because they’re from Boston and Boston is the home of the worst NBA team in the whole wide world, the Celtics, who had the audacity to beat my Los Angeles Lakers a couple of times in the 1980s. Also, the Red Sox! They’re pretty awful! And Boston is a very cold city, at least in the winter. A not-so-long ago history of racism, Boston also has, let’s not forget. And New England clam chowder is garbage compared to Manhattan clam chowder. So, I say this just to be transparent. I don’t think I personally want the Patriots to win the Super Bowl. Maybe I do. The Seahawks don’t sound great. Pate Carroll is apparently a 9/11 truther, which is a turnoff.

Let’s veer this ramble towards the news: #Deflategate! Bill Belichick says he didn’t do it. It wasn’t him. It was Mr Blue in the Library with the piano wire. Or, something. He has a scientific explanation for why the balls were tested to be under-inflated.

“We simulated a game-day situation, in terms of the preparation of the footballs, and where the footballs were at various points in time during the day or night. … I would say that our preparation process for the footballs is what we do —I can’t speak for anybody else — and that process raises the PSI approximately one pound,” Belichick said. “That process of creating a tackiness, a texture — a right feel, whatever that feel is, whatever that feel is. It’s a sensation for the quarterback. What’s the right feel — that process elevates the PSI one pound, based on what our study showed. Which was multiple balls, multiple examples in the process, as we would do for a game.”

I don’t know what any of that really means. It reads like gibberish to me. I, like so many Republican politicians, am not a scientist. Bill Nye is though and he says it’s gibberish too:

“What he said didn’t make any sense…Rubbing the football, I don’t think, can change the pressure.”

And that’s the news. Goodnight and good luck.

P.S. One of the things I was confused about was how deflated balls would give an advantage to a football team, because presumably it would make them less aerodynamic, but as my colleague Tim McDonnell notes, it’s about “grippiness.”

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Bill Nye Slams Bill Belichick: "What He Said Didn’t Make Any Sense"

Posted in Anchor, FF, GE, LAI, LG, ONA, Pines, Prepara, Radius, Uncategorized | Tagged , , , , , , , | Comments Off on Bill Nye Slams Bill Belichick: "What He Said Didn’t Make Any Sense"