pobguy.bsky.social - Profile | ThreadSky | a Reddit-style client for Bluesky

I guess the answer is yes, provided you believe the strike zone is defined as a 3D volume. But if you believe it is a 2D plane, then it is only necessary to specify the width, height, and location of that plane.

submitted 4 hours ago • 1 comment

Not 99%. More like 93% of strikes are in the strike zone at both the front and mid plane.

submitted 4 hours ago • 1 comment

You didn’t include my personal favorite Gene Hackman movie: The Conversation.

submitted 13 hours ago • 0 comments

Returning to the original question, I took a look at a large sample of pitches from 2024 and found the following: 1. Of the pitches that crossed the front plane of the strike zone, 5.0% failed to enter the mid plane

submitted 1 day ago • 2 comments

Now I am confused again. The words "Strike Zone Depth" suggests that the strike zone is 3D.

submitted 1 day ago • 4 comments

Thanks. I stand corrected.

submitted 1 day ago • 1 comment

Actually I thought the ABS uses the full 3D strike zone rather than the front or middle plane. Also the whole point of ABS is objectivity. "Calibrating" to what umpires call now would defeat that purpose.

submitted 1 day ago • 3 comments

I had a student of mine look into that a few years ago. I'll try to dig out his report.

submitted 1 day ago • 0 comments

More on the theoretical longest possible home run. Physics says it's considerably less than 660 feet. physics.csuchico.edu/baseball/Pub...

submitted 2 days ago • 1 comment

This is an example where the 0.1 inch discrepancy I mentioned from my simulations makes a difference.

submitted 2 days ago • 1 comment

I don't know. Maybe someone at MLB can answer

submitted 2 days ago • 1 comment

With the ABS system on the verge of being used for calling balls and strikes, I wondered whether there are systematic deviations of the home plate crossing due to the use of the constant acceleration (9P) trajectory rather than the exact trajectory. (1/3)

submitted 2 days ago • 1 comment

AKA Jurors #1 and #7

submitted 4 days ago • 0 comments

The Greatest Show On Earth

submitted 4 days ago • 0 comments

The greatest scene in all of moviedom. It never fails to send chills down my spine.

submitted 4 days ago • 1 comment

The Green Flash is not a mirage. I have seen it on several occasions. Moreover, the physics is pretty well understood. I used to give it as a homework assignment to honors students in my introductory classes.

submitted 4 days ago • 0 comments

"After October 7 I went and talked to a bunch of kids at a synagogue in Houston... I don’t go to temple all the time, but I am proud of being Jewish. And I didn’t realize what kind of impact I could have." This conversation with Alex Bregman means a lot to me: www.bostonherald.com/2025/02/23/r...

submitted 4 days ago • 2 comments

Thanks to @derekcarty.bsky.social for suggesting that I do this. For those of you who like technical details, see baseball.physics.illinois.edu/HawkeyeSpinA...

submitted 5 days ago • 0 comments

There seems to be a lot of interest in using the acceleration rather than movement to evaluate a pitch. As I have previously posted, I think movement/time is a better metric. Nevertheless, I have put together a template that using the technique I developed year ago to remove drag and gravity.

submitted 5 days ago • 1 comment

If you are actually there, I envy you!

submitted 5 days ago • 1 comment

Good day for it

submitted 6 days ago • 0 comments

Janet Mills is 1 year younger than me, which means we were nearly classmates at the Mallett School in Farmington.

submitted 5 days ago • 0 comments

Maine Governor Janet Mills (who's been in the news lately) is from Farmington ME where I once lived, 1st-4th grade. We were the only Jewish family in town back then.

submitted 5 days ago • 0 comments

Working with Bat-Tracking data will invariably lead all of us to become Physics students And I reiterate my point I've said many times in the past: whatever the subject matter is, Prob/Stats, Physics, Linear Algebra, coding languages, etc: It's going to stick if you relate it to a sport you like

submitted 5 days ago • 0 comments

Happy Birthday, George Washington. First in war, first in peace, and first President to play ball--documented by George Ewing as playing wicket, a rival game to baseball, at Valley Forge, Pennsylvania, on May 4, 1778.

submitted 5 days ago • 0 comments

Tr*mp is shutting down at midnight tonight the federal website for ordering free COVID tests (four per order). I just ordered four—can’t be easier. Last call. ------------------ covidtests.gov Please share

submitted 6 days ago • 0 comments

This is a sad week for Illini baseball. Former head coach Itch Jones, a D1 coaching legend and a good friend, passed away on Monday. Then on Wednesday current pitching coach Mark Allen passed away at age 49. May they meet up with all the other baseball legends in baseball heaven.

submitted 7 days ago • 0 comments

I didn't say this quite right. The higher q does not compensate the lower swing speed (i.e., EV drops off the sweet spot). But q does not fall as rapidly inside than outside, resulting in higher EV inside than outside, despite lower swing speed.

submitted 11 days ago • 0 comments

Very interesting article which I highly recommend. One conclusion is that it is better to mis-hit on the knob side of the sweet spot than on the barrel tip side. There is some interesting physics as to why that is so. See clip from here: baseball.physics.illinois.edu/THTAnnual201...

submitted 11 days ago • 1 comment

Dear federal scientists: If you have been affected by the probationary firings and would be willing to speak with Science, please reach out to me by email ([email protected]) or on Signal. We can guarantee annonymity.

submitted 13 days ago • 24 comments

Negotiate a lower price. If not successful, then return for full refund.

submitted 13 days ago • 1 comment

That is the "standard" example of explaining general relativity to non-physicists. Regarding Sky's tautology comment, in this simple example the distortion is due to the massive weights and the marble is a much less massive "test particle" (which therefore does not contribute to distortion).

submitted 13 days ago • 0 comments

OK, I think I have everyone identified. L to R: Oscar, West, Ohl, Thurmond, Barry, Howell, Wilt, Wilkins. I love this picture and I love that era of NBA basketball.

submitted 13 days ago • 0 comments

I think #10 for the East is Don "Waxey" Ohl.

submitted 13 days ago • 0 comments

Great picture. I recognize O and West on the left. Is the big guy Nate Thurmond? I don’t immediately recognize the others.

submitted 13 days ago • 0 comments

On this day... 56 years ago: I met the woman whom I would marry. 50 years ago: I successfully defended my PhD thesis Happy Valentines Day to all!

submitted 13 days ago • 0 comments

Well, yesterday was a pretty good day for both the Sox and Celts, so there's that.

submitted 14 days ago • 0 comments

I remember exactly what I was doing that Saturday night. I was watching The Caine Mutiny on TV when it was interrupted with the news of the massacre.

submitted 14 days ago • 0 comments

Happy birthday Bill 💚 #ForeverGreen

submitted 15 days ago • 3 comments

Donald Trump’s second term as US President has begun with staff layoffs, slashed budgets, axed diversity programmes and cancelled conferences in what some see as a new "dark ages" 🧪⚛️ physicsworld.com/a/us-science...

submitted 15 days ago • 22 comments

🗣️⚾️

submitted 18 days ago • 5 comments

Further work in this area is contained in a talk I gave at the 2019 Saberseminar: baseball.physics.illinois.edu/ppt/Modeling...

submitted 18 days ago • 0 comments