Jacobs Physics
@jacobsphysics.bsky.social
Physics program consultant; sports broadcaster; umpire. (Edna fan art by @aldescery)
Official blog: https://jacobsphysics.org
Official blog: https://jacobsphysics.org
The gravitation simulation "Milo's Solar System", a replacement for Phet's My Solar System after Flash was deprecated, has an updated url. See this post: #iTeachPhysics
jacobsphysics.org/2025/11/10/r...
jacobsphysics.org/2025/11/10/r...
Repost with update: Milo’s Solar System
Soon it is time for my AP physics class to move into gravitation. This is the one topic on the AP Physics 1 or C exams that doesn’t lend itself to tabletop experimentation. So we have to reso…
jacobsphysics.org
November 10, 2025 at 10:45 PM
The gravitation simulation "Milo's Solar System", a replacement for Phet's My Solar System after Flash was deprecated, has an updated url. See this post: #iTeachPhysics
jacobsphysics.org/2025/11/10/r...
jacobsphysics.org/2025/11/10/r...
Well now I know why my modified Atwood demo gave me the wrong tension on Monday…
Told the class I’d figure it out! Thank you! #iTeachPhysics
Told the class I’d figure it out! Thank you! #iTeachPhysics
Cool fact. Pasco wireless force probes and carts only work with the hooks they came with. A longer threaded hook interferes w/the flex of the strain gauge and prevents them from being calibrated. The one on the right is correct #ITeachPhysics
November 6, 2025 at 9:24 AM
Well now I know why my modified Atwood demo gave me the wrong tension on Monday…
Told the class I’d figure it out! Thank you! #iTeachPhysics
Told the class I’d figure it out! Thank you! #iTeachPhysics
Hey, @squidgerugby.bsky.social, could you help me? The play-by-play commentator for last weekend's Gloucester-Hartpury PWR match was *awesome*. I've heard her plenty of times before, in the World Cup and on other PWR matches last season. Who is she? Is she on Bluesky? [Thank you!] - greg
October 29, 2025 at 10:39 PM
Hey, @squidgerugby.bsky.social, could you help me? The play-by-play commentator for last weekend's Gloucester-Hartpury PWR match was *awesome*. I've heard her plenty of times before, in the World Cup and on other PWR matches last season. Who is she? Is she on Bluesky? [Thank you!] - greg
Premiership Women's Rugby back in season. @spuffyduds.bsky.social , the game is even more amazing on the 82" tv Shari bought me for my birthday. (Except for Harlequins' kit - that was abominable.) You gotta come watch with me some weekend!
October 26, 2025 at 2:39 PM
Premiership Women's Rugby back in season. @spuffyduds.bsky.social , the game is even more amazing on the 82" tv Shari bought me for my birthday. (Except for Harlequins' kit - that was abominable.) You gotta come watch with me some weekend!
Premiership Women's Rugby 2025-26 season starts this weekend! Yay!
Only two of the four games each week - the lesser two - are available to non-UK audiences. Boo!
Only two of the four games each week - the lesser two - are available to non-UK audiences. Boo!
October 24, 2025 at 2:54 AM
Premiership Women's Rugby 2025-26 season starts this weekend! Yay!
Only two of the four games each week - the lesser two - are available to non-UK audiences. Boo!
Only two of the four games each week - the lesser two - are available to non-UK audiences. Boo!
Reposted by Jacobs Physics
A note for sports: Bluesky’s engagement rate was x10 higher than X’s across a sampling of identical posts made on both platforms by @rapsheet.bsky.social (sharing with permission)
Fwiw we see a similar trend across all communities, not just sports. Real people, real conversations.
Fwiw we see a similar trend across all communities, not just sports. Real people, real conversations.
October 21, 2025 at 6:01 PM
A note for sports: Bluesky’s engagement rate was x10 higher than X’s across a sampling of identical posts made on both platforms by @rapsheet.bsky.social (sharing with permission)
Fwiw we see a similar trend across all communities, not just sports. Real people, real conversations.
Fwiw we see a similar trend across all communities, not just sports. Real people, real conversations.
"diabolically custom-configured bullshit statistic this side of a Surgeon General’s memo linking autism to circumcision."
1. I heard the stat and vomited a bit, too.
2. Not sure - is the SG memo parody? (Can't tell anymore.)
3. Does autism cause circumcision or vice/versa?
@miketanier.bsky.social
1. I heard the stat and vomited a bit, too.
2. Not sure - is the SG memo parody? (Can't tell anymore.)
3. Does autism cause circumcision or vice/versa?
@miketanier.bsky.social
October 16, 2025 at 2:52 AM
"diabolically custom-configured bullshit statistic this side of a Surgeon General’s memo linking autism to circumcision."
1. I heard the stat and vomited a bit, too.
2. Not sure - is the SG memo parody? (Can't tell anymore.)
3. Does autism cause circumcision or vice/versa?
@miketanier.bsky.social
1. I heard the stat and vomited a bit, too.
2. Not sure - is the SG memo parody? (Can't tell anymore.)
3. Does autism cause circumcision or vice/versa?
@miketanier.bsky.social
In V = IR, the real physics is in understanding what V goes with what R. How do I teach that at the lowest level? #iTeachPhysics
jacobsphysics.org/2025/10/14/i...
jacobsphysics.org/2025/10/14/i...
In V = IR: What V? What R?
It’s not difficult for students to figure out that a calculational circuits question requires the use of Ohm’s law, V = IR. The difficult part is understanding what voltage and resistan…
jacobsphysics.org
October 14, 2025 at 3:49 PM
In V = IR, the real physics is in understanding what V goes with what R. How do I teach that at the lowest level? #iTeachPhysics
jacobsphysics.org/2025/10/14/i...
jacobsphysics.org/2025/10/14/i...
Hey, Orlando supporters, love the "trans people belong" sign. But could you put it on the near side of the goal so it's visible on camera rather than on the far side, where it's obscured by the netting? #BAONPDX
October 11, 2025 at 12:57 AM
Hey, Orlando supporters, love the "trans people belong" sign. But could you put it on the near side of the goal so it's visible on camera rather than on the far side, where it's obscured by the netting? #BAONPDX
Moultrie saw that cross-field 60 yard pass the way an experienced AP Physics reader sees correctly-plotted data. Instinctive and immediate. #BAONPDX
October 11, 2025 at 12:55 AM
Moultrie saw that cross-field 60 yard pass the way an experienced AP Physics reader sees correctly-plotted data. Instinctive and immediate. #BAONPDX
And they show a Thorns supporters section in Orlando! I've been part of small but significant Thorns visiting support at Gotham, North Carolina, Utah, Washington, Kansas City... this team travels! Unlike my NFL team, the Bengals. #BAONPDX
October 11, 2025 at 12:44 AM
And they show a Thorns supporters section in Orlando! I've been part of small but significant Thorns visiting support at Gotham, North Carolina, Utah, Washington, Kansas City... this team travels! Unlike my NFL team, the Bengals. #BAONPDX
Who says there aren't timeouts in soccer? Of course, Portland has also had their keeper go down so the team can have a chat many a time... #BAONPDX
October 11, 2025 at 12:41 AM
Who says there aren't timeouts in soccer? Of course, Portland has also had their keeper go down so the team can have a chat many a time... #BAONPDX
Damn! Reilyn Turner intended that as a shot! And it was going in except for the desperate touch by the goal keeper. What touch! #BAONPDX
October 11, 2025 at 12:28 AM
Damn! Reilyn Turner intended that as a shot! And it was going in except for the desperate touch by the goal keeper. What touch! #BAONPDX
Not sure I like the camera in the locker room or the pregame huddles. Let's let athletes have their private moments together. Love hearing ex-Thorn Simone Charley, tho. #BAONPDX
October 11, 2025 at 12:09 AM
Not sure I like the camera in the locker room or the pregame huddles. Let's let athletes have their private moments together. Love hearing ex-Thorn Simone Charley, tho. #BAONPDX
