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🔩 An unexpected twist in space The Dzhanibekov effect: an object rotating in zero gravity suddenly flips its axis of rotation. This occurs due to differences in the moments of inertia across the three axes, causing rotational instability. Demonstrated by Vladimir Dzhanibekov in 1985, this phenomenon shows how even... show more

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NASA astronaut demonstrating the Dzhanibekov effect. An astronaut noticed this physical behavior of a handle, that turned out to be the proof of a theorem: the tennis racket theorem (also dubbed the Dzhanibekov effect) The Tennis Racket Theorem states that an object with three unique moments of inertia, rotation about the axis of intermediate moment of inertia is unstable, while rotation about the other two axis is stable. The effect is named after the Russian cosmonaut Vladimir Dzhanibekov who discovered this phenomenon while in space in 1985.

NASA astronaut demonstrating the Dzhanibekov effect. An astronaut noticed this physical behavior of a handle, that turned out to be the proof of a theorem: the tennis racket theorem (also dubbed the Dzhanibekov effect) The Tennis Racket Theorem states that an object with three unique moments of inertia, rotation about the axis of intermediate moment of inertia is unstable, while rotation about the other two axis is stable. The effect is named after the Russian cosmonaut Vladimir Dzhanibekov who discovered this phenomenon while in space in 1985.

Historic Vids

23,642,742 views • 2 years ago

The Dzhanibekov Effect: Spin any object with three different moments of inertia in zero gravity. The object will spin stably for a few seconds, then suddenly flip 180° while continuing its rotation, then flip back a few seconds later. It does this indefinitely.

The Dzhanibekov Effect: Spin any object with three different moments of inertia in zero gravity. The object will spin stably for a few seconds, then suddenly flip 180° while continuing its rotation, then flip back a few seconds later. It does this indefinitely.

Bluntly Put Philosopher (BPP)

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The "Dzhanibekov effect", seen in a rotating object where it will flip its axis by 180 degrees, is demonstrated in microgravity with our camera.

The "Dzhanibekov effect", seen in a rotating object where it will flip its axis by 180 degrees, is demonstrated in microgravity with our camera.

Don Pettit

933,781 views • 7 months ago

In 1985 an astronaut noticed this physical behavior of a handle, that turned out to be the proof of a theorem: the tennis racket theorem (also dubbed the Dzhanibekov effect). [📹 science.bill]

In 1985 an astronaut noticed this physical behavior of a handle, that turned out to be the proof of a theorem: the tennis racket theorem (also dubbed the Dzhanibekov effect). [📹 science.bill]

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During a space shuttle mission, astronauts partook in an experiment to watch a rotating dome in front of them. This rotating dome gave the crew an object to focus on, enabling researchers to capture the torsion movement of the eye.

During a space shuttle mission, astronauts partook in an experiment to watch a rotating dome in front of them. This rotating dome gave the crew an object to focus on, enabling researchers to capture the torsion movement of the eye.

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Physics professor Walter Lewis demonstrating gyroscope precession. A gyroscope is a device used for maintaining or measuring angular velocity and orientation. Precession is a change in the orientation of the rotational axis of a rotating body. The gyroscope effect was discovered in 1817 by Johann Bohnenberger; the gyroscope was invented, and the effect named after it, in 1852 by Léon Foucault for an experiment involving the rotation of the Earth. Foucault's experiment to see the Earth's rotation was unsuccessful due to friction, which effectively limited each trial to 8 to 10 minutes, too short a time to observe significant movement. In the 1860s, however, electric motors made the concept feasible, leading to the first prototype gyrocompasses; the first functional marine gyrocompass was developed between 1905 and 1908 by German inventor Hermann Anschütz-Kaempfe.

Physics professor Walter Lewis demonstrating gyroscope precession. A gyroscope is a device used for maintaining or measuring angular velocity and orientation. Precession is a change in the orientation of the rotational axis of a rotating body. The gyroscope effect was discovered in 1817 by Johann Bohnenberger; the gyroscope was invented, and the effect named after it, in 1852 by Léon Foucault for an experiment involving the rotation of the Earth. Foucault's experiment to see the Earth's rotation was unsuccessful due to friction, which effectively limited each trial to 8 to 10 minutes, too short a time to observe significant movement. In the 1860s, however, electric motors made the concept feasible, leading to the first prototype gyrocompasses; the first functional marine gyrocompass was developed between 1905 and 1908 by German inventor Hermann Anschütz-Kaempfe.

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9,422,684 views • 2 years ago

Why does a spinning object speed up as it shrinks? This Hoberman sphere demonstration illustrates the law of conservation of angular momentum. Moment of inertia measures how mass is distributed relative to the axis of rotation. When the sphere collapses, its mass moves inward. This decrease in inertia forces the angular velocity to increase because the total momentum of the system must remain constant. This same principle allows figure skaters to accelerate their spins and causes collapsing stars to become rapidly rotating pulsars. It is a fundamental rule of physics. Geometry determines speed. Video Credit: Physics Demos

Why does a spinning object speed up as it shrinks? This Hoberman sphere demonstration illustrates the law of conservation of angular momentum. Moment of inertia measures how mass is distributed relative to the axis of rotation. When the sphere collapses, its mass moves inward. This decrease in inertia forces the angular velocity to increase because the total momentum of the system must remain constant. This same principle allows figure skaters to accelerate their spins and causes collapsing stars to become rapidly rotating pulsars. It is a fundamental rule of physics. Geometry determines speed. Video Credit: Physics Demos

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Einstein's Theory Confirmed: Star's Orbit Around Milky Way's Black Hole Using ESO's Very Large Telescope (VLT), astronomers have, for the first time, observed a star orbiting the supermassive black hole at the center of the Milky Way in a manner precisely predicted by Einstein's **general theory of relativity**. Instead of following a closed elliptical orbit, as described by **Newtonian gravity**, the star traces a path shaped like a **rosette**. This phenomenon, known as **Schwarzschild precession**, had never been measured before for a star near a supermassive black hole. A visual representation exaggerates the effect to help demonstrate this relativistic behavior. **What is Schwarzschild Precession?** This is a relativistic effect in which the orbit of an object in the gravitational field of another does not close upon itself, unlike the neat ellipses of Newtonian predictions. Instead, the orbit shifts or "precesses" within its plane, advancing in the direction of motion. This observation adds further evidence supporting Einstein’s groundbreaking theories and offers new insights into the behavior of stars in extreme gravitational environments.

Einstein's Theory Confirmed: Star's Orbit Around Milky Way's Black Hole Using ESO's Very Large Telescope (VLT), astronomers have, for the first time, observed a star orbiting the supermassive black hole at the center of the Milky Way in a manner precisely predicted by Einstein's general theory of relativity. Instead of following a closed elliptical orbit, as described by Newtonian gravity, the star traces a path shaped like a rosette. This phenomenon, known as Schwarzschild precession, had never been measured before for a star near a supermassive black hole. A visual representation exaggerates the effect to help demonstrate this relativistic behavior. What is Schwarzschild Precession? This is a relativistic effect in which the orbit of an object in the gravitational field of another does not close upon itself, unlike the neat ellipses of Newtonian predictions. Instead, the orbit shifts or "precesses" within its plane, advancing in the direction of motion. This observation adds further evidence supporting Einstein’s groundbreaking theories and offers new insights into the behavior of stars in extreme gravitational environments.

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Astronaut Tim Peake demonstrates aboard the International Space Station, a stationary object in microgravity will tumble aimlessly with even the slightest tap. But once a gyroscope begins to spin, it instantly locks into a rigid geometric plane, stubbornly refusing to be tilted. This phenomenon is driven by angular momentum. The rapid rotation creates a powerful resistance to outside forces, granting the object an invisible, unyielding stability. This is far more than a simple physics trick. This exact principle of spin stabilization is what keeps the massive space station perfectly oriented as it orbits the Earth; a profound reminder that in the chaotic vacuum of space, sometimes the only way to stay perfectly still is to keep moving.

Astronaut Tim Peake demonstrates aboard the International Space Station, a stationary object in microgravity will tumble aimlessly with even the slightest tap. But once a gyroscope begins to spin, it instantly locks into a rigid geometric plane, stubbornly refusing to be tilted. This phenomenon is driven by angular momentum. The rapid rotation creates a powerful resistance to outside forces, granting the object an invisible, unyielding stability. This is far more than a simple physics trick. This exact principle of spin stabilization is what keeps the massive space station perfectly oriented as it orbits the Earth; a profound reminder that in the chaotic vacuum of space, sometimes the only way to stay perfectly still is to keep moving.

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"Everybody needs to read 'gravity as a zero point fluctuation force.' Is that gravity is not a fundamental force. It's actually an induced effect of this zero point energy field we're in all the time." - Ashton Forbes to Candace Owens

"Everybody needs to read 'gravity as a zero point fluctuation force.' Is that gravity is not a fundamental force. It's actually an induced effect of this zero point energy field we're in all the time." - Ashton Forbes to Candace Owens

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A stunning view as an iceberg flips over in Argentina. 🧊⁣ This iceberg phenomenon is rare and known as "iceberg calving." It is the breaking of ice chunks from a glacier. If the center of gravity of the chunk is high enough, it can even flip over the ice chunk.⁣

A stunning view as an iceberg flips over in Argentina. 🧊⁣ This iceberg phenomenon is rare and known as "iceberg calving." It is the breaking of ice chunks from a glacier. If the center of gravity of the chunk is high enough, it can even flip over the ice chunk.⁣

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This building in the San Siro stadium in Milan is not rotating - whatever your brain tells you. It's an optical illusion caused by the downward motion of the people inside. Our brains interpret the motion as belonging to the rotation of the building.

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This isn't just an animation-it's the actual orbital path of Star S2 around the supermassive black hole at the center of our Milky Way, Sagittarius A*. For 27 years, astronomers tracked S2 as it danced around a 4.1-million-solar-mass "invisible" object. The mind-blowing part? Look closely at the orbit. It doesn't trace a perfect, closed loop. Instead, the orbit itself rotates over time, creating a flower-like pattern. This is called Schwarzschild Precession. According to Newton, gravity should keep the orbit in a fixed ellipse. But Einstein's General Relativity predicted that in extreme gravity, space-time is so warped that the orbit must space-time is so warped that the orbit must shift. In 2020, the VLT (Very Large Telescope) finally confirmed this shift, proving Einstein's theory holds up even at the edge of a black hole!

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This video captured by Jess Wandering on the Alpstein massif in Switzerland, shows the difference in weather between two sides of a mountain due to the orographic effect [read more: [full video:

This video captured by Jess Wandering on the Alpstein massif in Switzerland, shows the difference in weather between two sides of a mountain due to the orographic effect [read more: [full video:

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Here's the rotating movement of the stars on our flat Earth. It's an electromagnetic torus field with a plane of inertia in the middle. That's how the universe works! Believing that you live on a spinning globe traveling in space and chasing the sun, is their biggest mockery of your intelligence. I believe that one day this truth will be known and clear to all of humanity.

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When you make a wormhole, you're not accelerating the object, you're manipulating the medium. That's why it looks like the object simply slips out of spacetime. The wormhole works just like in a wave pool with an implosive singularity at the center. This plane is being sent backwards perpendicular to the axis of the orbs rotation.

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