Two beauties of the day in my AP physics 2 class today: diffraction on a human hair and on the pushpin. Central Parents #iteachphysics

Congratulations to our Math Club copresident Martin Chan (278)! He qualified for AIME (the second round of the American Math Competition). This is a great achievement. Please join me in congratulating Martin. @chs1836 CHSPhiladelphia Centralizer Timothy J. McKenna

Fantastic simple experiment.

Happy Birthday Albert Einstein. 140 yo is a lot! But his ideas are still like new for many of us😉

Finally, setting up and showing the connections between SHM and circular motion went fantastic today. I used Vernier Science Education Go direct carts and rotational motion set and it was easy to synchronize the frequencies, analyze the SHM graphs etc. Great equipment! Timothy J. McKenna Central Parents

My APP2 students listened with great interest.

My senior portrait. In support of the 279th graduating class. #lancerpride Central Parents CHSPhiladelphia @CentralHighPHL

I love to see our country going back to space. #LaunchAmerica

Congratulations, CHS class 279! You did it! #CHS1836 CHSPhiladelphia @chs279families

Nothing is new under the moon.

Hello, world. My first look at my forever home. #CountdownToMars

And another look behind me. Welcome to Jezero Crater. #CountdownToMars

NASA's Mars Helicopter Ingenuity 1st flight of an aircraft on another pl... youtu.be/EB305fUiRtc via YouTube

Circumradius of unit decagon = golden ratio. Puzzle by Diego Rattaggi 🇨🇭

My new blog post on modeling planetary transit lab using Vernier equipment. This lab was a big success in my Astronomy IB class. #Vernier #Astronomy_Education physicshandson.wordpress.com/2022/04/10/mod…

I made a better setup for my planetary transit demo using Vernier Science Education Centripetal Force Apparatus and Vernier Science Education Light Sensor and converted it to an astronomy lab. Worked great, students were excited. x.com/BorisOvetsky/s…

I like almost all #Vernier sensors. My favorite so far is Diffraction Apparatus.

- Президент подготовил специальный призыв к миру, который планировали к показу сегодня перед финальной игрой футбольного чемпионата. Президент обратился ко всему человечеству с инициативой провести Глобальный саммит мира. Просьба - распространить.