Dan Hosey
@danhosey.bsky.social
HS Physics Teacher. Desmos simulation fan. Spreadsheets too. Always tinkering.
www.mrhosey.com/desmos
www.mrhosey.com/desmos
I made an excel spreadsheet that scores a cross country meet. It also allows you to rescore the meet by entering "Fictional Order" to see how the xc results would change. It's a lot of fun youtu.be/UIcG5tnKWv8
Spreadsheet for Scoring and Simulating a Cross Country Meet
YouTube video by PrerequisiteName
youtu.be
November 1, 2025 at 7:16 PM
I made an excel spreadsheet that scores a cross country meet. It also allows you to rescore the meet by entering "Fictional Order" to see how the xc results would change. It's a lot of fun youtu.be/UIcG5tnKWv8
Playing with iterating through preset parameters for a @desmos simulation. A table of values makes it easy to cycle through different scenarios. This particular sim is for equilibrium of a rod supported by a cable. www.desmos.com/calculator/b...
October 23, 2025 at 2:10 PM
Playing with iterating through preset parameters for a @desmos simulation. A table of values makes it easy to cycle through different scenarios. This particular sim is for equilibrium of a rod supported by a cable. www.desmos.com/calculator/b...
#iTeachPhysics Playing with @desmos.com 3d, exploring spherically symmetric charge distributions where p(r)=r^n. Vary n and watch the charge distribution change in 3d. p(r),Q_enc(r),E(r) graphed on XY plane. Toggle each octant on and off by clicking large corner Pts. www.desmos.com/3d/wmp7fkjdyh
[DH-125] 3d Spherical Charge Distribution
www.desmos.com
October 14, 2025 at 9:03 PM
#iTeachPhysics Playing with @desmos.com 3d, exploring spherically symmetric charge distributions where p(r)=r^n. Vary n and watch the charge distribution change in 3d. p(r),Q_enc(r),E(r) graphed on XY plane. Toggle each octant on and off by clicking large corner Pts. www.desmos.com/3d/wmp7fkjdyh
Just playing around some more with Desmos 3d. Specifically Spherical Coordinates and octants. Points generated randomly. Click single dots to hide Octants. Change Vector in Spherical Coordinates. Just for fun ... www.desmos.com/3d/bkcwfvungl
Spherical Coordinate and Octant Play
www.desmos.com
October 12, 2025 at 2:34 AM
Just playing around some more with Desmos 3d. Specifically Spherical Coordinates and octants. Points generated randomly. Click single dots to hide Octants. Change Vector in Spherical Coordinates. Just for fun ... www.desmos.com/3d/bkcwfvungl
#iTeachphysics Noticed 2 sets of reflection in my reading glasses of the 4 candelabra lights above my kitchen table. One set is of the 4 white bulbs I expect. The other reflection makes the bulbs blue. Another pair of glasses makes the 2nd reflection green. Any thoughts on what is going on?
March 16, 2025 at 12:57 AM
#iTeachphysics Noticed 2 sets of reflection in my reading glasses of the 4 candelabra lights above my kitchen table. One set is of the 4 white bulbs I expect. The other reflection makes the bulbs blue. Another pair of glasses makes the 2nd reflection green. Any thoughts on what is going on?
#ITeachPhysics I've been working on an electrostatics @desmos.com simulation to build up student intuition for parallel plate capacitors including a partial dielectric. I am a little too close to it right now, does this simulation make sense to others? www.desmos.com/calculator/o...
February 20, 2025 at 5:29 AM
#ITeachPhysics I've been working on an electrostatics @desmos.com simulation to build up student intuition for parallel plate capacitors including a partial dielectric. I am a little too close to it right now, does this simulation make sense to others? www.desmos.com/calculator/o...
I forgot I previously made this SHM @desmos.com comparing UCM, pendulum, and mass on a spring side by side until I was getting ready for class this evening. #iTeachPhysics www.desmos.com/calculator/e...
January 6, 2025 at 2:44 AM
I forgot I previously made this SHM @desmos.com comparing UCM, pendulum, and mass on a spring side by side until I was getting ready for class this evening. #iTeachPhysics www.desmos.com/calculator/e...
Modeling a figure skater as a solid disk with 'very light' arms and 'very massive' hands in @desmos.com www.desmos.com/calculator/w...
#iTeachPhysics
#iTeachPhysics
December 19, 2024 at 9:30 PM
Modeling a figure skater as a solid disk with 'very light' arms and 'very massive' hands in @desmos.com www.desmos.com/calculator/w...
#iTeachPhysics
#iTeachPhysics
#iteachphysics tweaking a @desmos.com simulation for making sense of an object rolling up, then down a hill. Frictionless and frictionfull incline side by side. Also, looking at the transition of an object with backspin to forward under a new rolling condition. www.desmos.com/calculator/r...
December 12, 2024 at 1:32 AM
#iteachphysics tweaking a @desmos.com simulation for making sense of an object rolling up, then down a hill. Frictionless and frictionfull incline side by side. Also, looking at the transition of an object with backspin to forward under a new rolling condition. www.desmos.com/calculator/r...
#iTeachPhysics When introducing Parallel axis theorem,I show part of the Coin Paradox Veritasium video about an incorrect SAT question.I use this #desmos simulation to relate the "extra" rotation to the CM orbiting a parallel axis. youtu.be/FUHkTs-Ipfg?...
www.desmos.com/calculator/2...
www.desmos.com/calculator/2...
December 10, 2024 at 3:25 PM
#iTeachPhysics When introducing Parallel axis theorem,I show part of the Coin Paradox Veritasium video about an incorrect SAT question.I use this #desmos simulation to relate the "extra" rotation to the CM orbiting a parallel axis. youtu.be/FUHkTs-Ipfg?...
www.desmos.com/calculator/2...
www.desmos.com/calculator/2...
Playing around making an adjustable pace chart for indoor / outdoor track #running
www.desmos.com/calculator/n...
www.desmos.com/calculator/n...
December 10, 2024 at 1:32 AM
Playing around making an adjustable pace chart for indoor / outdoor track #running
www.desmos.com/calculator/n...
www.desmos.com/calculator/n...
Playing around with coefficient of restitution and 2 bouncy balls simulation. www.desmos.com/calculator/a...
#iTeachPhysics
#iTeachPhysics
November 25, 2024 at 10:22 PM
Playing around with coefficient of restitution and 2 bouncy balls simulation. www.desmos.com/calculator/a...
#iTeachPhysics
#iTeachPhysics
#iTeachPhysics 20 classroom physics experiments in 60 seconds. Each uses textbooks. Started as a joke, became a nostalgic dive through my personal archives. How many do you recognize? Which are new? Post pictures of your using textbooks for something other than reading. youtu.be/jcS6jjMCStA
20 Physics Experiments in 60 seconds. Each uses textbooks.
YouTube video by PrerequisiteName
youtu.be
November 17, 2024 at 8:27 PM
#iTeachPhysics 20 classroom physics experiments in 60 seconds. Each uses textbooks. Started as a joke, became a nostalgic dive through my personal archives. How many do you recognize? Which are new? Post pictures of your using textbooks for something other than reading. youtu.be/jcS6jjMCStA
#iTeachPhysics 20 experiments in 60 seconds. This started with a joke about using textbooks in lab. I went through my files and all 20 use textbooks. How many do you recognize? How many are new to you? Maybe I just want BlueSky to be the new physics teaching place. Post your textbook pictures...
November 17, 2024 at 7:58 PM
#iTeachPhysics 20 experiments in 60 seconds. This started with a joke about using textbooks in lab. I went through my files and all 20 use textbooks. How many do you recognize? How many are new to you? Maybe I just want BlueSky to be the new physics teaching place. Post your textbook pictures...
#iteachphysics Investigating the Tension in a pendulum and release angle. Graphing Tension vs Cos(theta) produces a line with a slope of -2mg and y-intercept of 3mg. What is another linearization where a quantity shows up in the slope and intercept? g. www.dropbox.com/scl/fo/v2svb...
November 15, 2024 at 2:11 PM
#iteachphysics Investigating the Tension in a pendulum and release angle. Graphing Tension vs Cos(theta) produces a line with a slope of -2mg and y-intercept of 3mg. What is another linearization where a quantity shows up in the slope and intercept? g. www.dropbox.com/scl/fo/v2svb...
Despite 100% overcast sky, I was able to capture the staggering speed of totality darkness Check out these graphs. #iteachphysics
Perception of brightness is not linear. I also used this concept to modify the the Desmos sim of totality my student made. www.desmos.com/calculator/h...
Perception of brightness is not linear. I also used this concept to modify the the Desmos sim of totality my student made. www.desmos.com/calculator/h...
April 14, 2024 at 12:05 AM
Despite 100% overcast sky, I was able to capture the staggering speed of totality darkness Check out these graphs. #iteachphysics
Perception of brightness is not linear. I also used this concept to modify the the Desmos sim of totality my student made. www.desmos.com/calculator/h...
Perception of brightness is not linear. I also used this concept to modify the the Desmos sim of totality my student made. www.desmos.com/calculator/h...
#iteachphysics 3D Desmos simulation of a banked turn. Vary radius of turn to see how the normal and friction forces change. www.desmos.com/3d/242372468a
Banked Turn 3d C
www.desmos.com
October 27, 2023 at 10:36 AM
#iteachphysics 3D Desmos simulation of a banked turn. Vary radius of turn to see how the normal and friction forces change. www.desmos.com/3d/242372468a
#iteachphysics
Examining critical angular velocity of objects on a rotating rod.
youtu.be/3GcPUuvgcK8?...
Examining critical angular velocity of objects on a rotating rod.
youtu.be/3GcPUuvgcK8?...
Critical Angular Velocity on a Rotating Rod
At what angular velocity will an object slip off of a rotating rod. In this experiment we measure the angular velocity at which metal disks (slotted masses) ...
youtu.be
October 20, 2023 at 12:45 AM
#iteachphysics
Examining critical angular velocity of objects on a rotating rod.
youtu.be/3GcPUuvgcK8?...
Examining critical angular velocity of objects on a rotating rod.
youtu.be/3GcPUuvgcK8?...
3D @Desmos simulation of many large angle Pendula. Presets for 1. "Wave Snake".
2. Simultaneous release from 0 to 180 degrees.
3. "Meter Stick Falling Race.". (Physical Pendulum)
youtu.be/cWnZLJQlajA
desmos.com/3d/4cad37dccd
#iteachphysics
2. Simultaneous release from 0 to 180 degrees.
3. "Meter Stick Falling Race.". (Physical Pendulum)
youtu.be/cWnZLJQlajA
desmos.com/3d/4cad37dccd
#iteachphysics
Desmos 3D simulation of many large angle Pendula
I am having so much fun with desmos 3D. I made a simulation of N simultaneously released pendula. The motion is computed numerically using at Runge-Kutta a...
youtu.be
October 6, 2023 at 10:58 AM
3D @Desmos simulation of many large angle Pendula. Presets for 1. "Wave Snake".
2. Simultaneous release from 0 to 180 degrees.
3. "Meter Stick Falling Race.". (Physical Pendulum)
youtu.be/cWnZLJQlajA
desmos.com/3d/4cad37dccd
#iteachphysics
2. Simultaneous release from 0 to 180 degrees.
3. "Meter Stick Falling Race.". (Physical Pendulum)
youtu.be/cWnZLJQlajA
desmos.com/3d/4cad37dccd
#iteachphysics
#Physics Desmos 3D calculator just came out in beta form. Having some fun playing with multiple conical pendula at varied speeds. desmos.com/3d/4c463a918b
September 30, 2023 at 3:17 PM
#Physics Desmos 3D calculator just came out in beta form. Having some fun playing with multiple conical pendula at varied speeds. desmos.com/3d/4c463a918b