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Marc "Zeke" Kossover @zkossover.bsky.social · 05/07/2025

Do make sure the area is well-ventillated. This demonstration once set off my carbon monoxide alarm.

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Marc "Zeke" Kossover @zkossover.bsky.social · 05/07/2025

Not sure what you're using as a source, but we've just started using these single color flashlights. a.co/d/hmkqHrH

a.co

Amazon.com

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Marc "Zeke" Kossover @zkossover.bsky.social · 05/07/2025

A little harder to make, but slightly more advanced fidget spinner lazy Susan. docs.google.com/document/d/1...

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Marc "Zeke" Kossover @zkossover.bsky.social · 20/05/2025

Reminds me a bit at the beginning of Iain M. Banks's Transitions.

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Reposted by Marc "Zeke" Kossover

Andrew Harmsworth @harmsy.bsky.social · 09/02/2025

AQA GCSE Physics looks at ‘energy imbalance’ for Earth. This graphic is fabulous for reinforcing their learning: red line up, as T is rising. Black line up, as GHG levels higher and dimming reduced (shipping emissions cleaner). Stark. No equilibrium in sight. #IteachPhysics #TeachSDGs

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Marc "Zeke" Kossover @zkossover.bsky.social · 28/01/2025

I love this experiment and have done it with students many times. Something unusual happens if you put a microphone inside the bell jar while at vacuum. For example, if you can get your phone to auto answer while under vacuum, it isn't as quiet as might expect.

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Marc "Zeke" Kossover @zkossover.bsky.social · 28/01/2025

Are you a middle or high school science teacher? Want the best PD at the best science museum in the world? Want to get paid a $2500 stipend?

exploratorium.edu

Summer Institute for Teachers | Exploratorium

Three-week workshop for secondary science teachers.

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Marc "Zeke" Kossover @zkossover.bsky.social · 08/12/2024

For folks in the Northern Hemisphere, yesterday had the earliest sunset. Sunsets are starting to get later, even though the amount of daylight will continue to shrink until December 21. Confused? Blame gravity. www.timeanddate.com/astronomy/eq...

timeanddate.com

Equation of Time

The difference between the time measured by the Sun and the time measured by our clocks is known as the equation of time.

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Marc "Zeke" Kossover @zkossover.bsky.social · 06/12/2024

We also have a design for a classroom version. Works great with just D batteries. www.exploratorium.edu/snacks/circl...

exploratorium.edu

Circles of Magnetism | Exploratorium

Make a magnetic field that's stronger than Earth's.

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Reposted by Marc "Zeke" Kossover

Michael Freeman @afreeparticle.com · 16/11/2024

🎢 Darek Dewey has some of the most surprising and creative demos and I hope to see him here soon! "No matter what angle you drop the rod at it always ends up straight at the bottom of brachistochrone curves."

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Reposted by Marc "Zeke" Kossover

DrS @drcsneddon.bsky.social · 01/12/2024

Another example for my second years doing a topic on light. Love it!

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Reposted by Marc "Zeke" Kossover

Michael Freeman @afreeparticle.com · 02/12/2024

🎢 Brilliant demonstration from @cossettej.bsky.social of the relationship between normal force and friction force on a car.

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Marc "Zeke" Kossover @zkossover.bsky.social · 25/11/2024

You can also use a Hot Hands heat pack, but it's slower.

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Marc "Zeke" Kossover @zkossover.bsky.social · 22/11/2024

The article on hydrogen powered cars was kind of fast and loose with the facts. Describing gasoline and hydrogen as equally dangerous is not true. Gasoline explodes with mixtures between 1.2% and 7.1%, while hydrogen ignites in ranges of 4% to 74%.

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Marc "Zeke" Kossover @zkossover.bsky.social · 19/11/2024

Alas, I live in California, but I'll be in London on holiday next week! I'm retired from the classroom, but I still design science activities for teachers, and facilitate workshops for teachers. And like you, I do science shows and have even worked with magicians.

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Marc "Zeke" Kossover @zkossover.bsky.social · 19/11/2024

Great collection of videos of physics demonstrations with good explanations and instructions to do it yourself.

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