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Ben Reeves
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Know what you believe, but more importantly, know why you believe it. Your actions speak so loudly that I can not hear what you say.
Know what you believe, but more importantly, know why you believe it. Your actions speak so loudly that I can not hear what you say.

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Testing the knee again. It's getting better. #4theloveofit

Check out my run on Strava: https://www.strava.com/activities/1093731001/shareable_images/map_based?hl=en-US&v=1500599277
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Evening group run. Knee is a little better but still concerning. #4theloveofit
Check out “Evening Run” on Relive! https://www.relive.cc/view/1082343635

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The knee pain was barely tolerable today so I pushed through as long as I could. Encouraging though that it held up. Hopefully it's just a short setback. #4theloveofit

Check out “Afternoon Run” on Relive! https://www.relive.cc/view/1080581942

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Did something to my left knee so I'm on the bike for a while. #4theloveofit
Check out “Afternoon Ride” on Relive! https://www.relive.cc/view/1078997996

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Easy little run with my little girl pacing me on her bike. #4theloveofit
Check out my run on Strava: https://www.strava.com/activities/1066425006/shareable_images/map_based?hl=en-US&v=1499130921
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Today's long run at altitude. #4theloveofit

Check out “Kenosha to Breck via shortcut” on Relive! https://www.relive.cc/view/1062716630

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The Dzhanibekov Effect

The intermediate axis theorem, also known as the tennis racket theorem, is a classical mechanics description of the motion of a rigid body with three distinct principal moments of inertia. This means it requires a different amount of torque (rotational force) to rotate the object about each axis. The phenomenon is also known as the Dzhanibekov effect after the Russian cosmonaut Vladimir Dzhanibekov who demonstrated the theorem in 1985 while in space.

The theorem states that rotation of an object around its first and third principal axes is stable whereas rotation around its second principal axis (the intermediate axis) is not. When demonstrated in microgravity aboard the International Space Station, the t-shaped handle can be seen flipping back and forth as it spins unstably about its intermediate axis. The theorem can be quantitatively analyzed using Euler's equations that describe rigid body dynamics.

Source: https://youtu.be/1n-HMSCDYtM
KSP Explanation: https://youtu.be/-Si6iRL5Fj8

#ScienceGIF #Science #GIF #NASA #Astronaut #Physics #Dzhanibekov #Spin #Procession #Inertia #Torque #Tennis #Racket #Theorem #Intermediate #Axis #Microgravity #Gravity #Space #ISS #Euler
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