Conservation of angular momentum

Our theory for the origin of the Solar System is a very old one with some modern innovations called the Nebular Hypothesis. A crucial ingredient in the nebular hypothesis is the conservation of angular momentum. Angular Momentum ...

Conservation of Angular Momentum
(a) The principle that the angular momentum of a system (the momentum of rotation about a point) remains the same as long as no external torque acts.

Conservation of angular momentum- the law of science that states that momentum must be conserved within a system ...

Because of the conservation of angular momentum, the nebula spun faster as it collapsed. As the material within the nebula condensed, the atoms within it began to collide with increasing frequency, converting their kinetic energy into heat.

conservation of angular momentum when an object or system of objects has no net outside forces acting on it, the total amount of its angular momentum does not change.

1 (a) Conservation of angular momentum demands that a contracting, rotating cloud (a) must spin faster as its size decreases. (b) Eventually, the primitive solar system came to resemble a giant pancake.

The most familiar example of the conservation of angular momentum is the ballet dancer, whose spin increases as she draws in her arms.

For a given object or system isolated from external forces, the total angular momentum is a constant, a fact that is known as the law of conservation of angular momentum.

Born in a core-collapse supernova explosion, neutron stars rotate extremely rapidly as a consequence of the conservation of angular momentum, and have incredibly strong magnetic fields due to conservation of magnetic flux.

The fast rotation is due to a rule concerning spinning objects - the conservation of angular momentum. This is a relation between the rate of rotation (how fast it spins) and the distribution of mass in the spinning object (how spread out it is).

Conservation of angular momentum causes the rotation to increase as the nebula becomes smaller. This rotation causes the cloud to flatten out - much like forming a flat pizza out of dough - and take the form of a disk.

As it collapsed it did not lose the spin that it had (conservation of angular momentum), so it didn't collapse into a small sphere, it collapsed into a rotating disk. As gravity compressed the gas, it began to heat up.

Neutron stars rotate extremely rapidly as a consequence of the conservation of angular momentum, and have incredibly strong magnetic fields due to conservation of magnetic flux.

If you are familiar with the conservation of angular momentum you will know that if a slowly rotating object contracts its rotation rate will increase, and this is probably the origin of the rotation of most solar system objects; ...

Due to the law of conservation of angular momentum, if a spinning mass turns into a black hole, the resultant hole must still spin. Just because it's a singularity doesn't mean it can escape the basic laws of nature! ...

rotating magnetized neutron stars
conservation of angular momentum ---
rapid spin
lighthouse model
Crab nebula powered by pulsar (synchrotron)
slowing down (young pulsars spin faster than old) ...

That's because of a complexity involving the "conservation of angular momentum". This is an important part of the physics of astronomy but I think we've gone deep enough.

An equation governing the conservation of angular momentum. [H76]
VLA
Very Large Array A network of 27 radio telescopes in New Mexico, USA. [McL97]
Vlaslov Equation ...

As the region that would become the Solar System, known as the pre-solar nebula, collapsed, conservation of angular momentum made it rotate faster. The centre, where most of the mass collected, became increasingly hotter than the surrounding disc.

This is a zero-sum game that physicists call the conservation of angular momentum: The total angular momentum in the Earth-Moon system, which is related to the energy stored in both rotation and revolution, must remain the same.

An object's angular momentum cannot change unless some force acts to speed up or slow down its circular motion. This principle, known as conservation of angular momentum, ...

Motion states that a line from a planet to the sun will sweep out equal areas in equal times. The planet moves more slowly when it is farther from the sun and faster when it is near it. (This is equivalent to the conservation of angular momentum.) ...

Due to the conservation of angular momentum, a neutron star spins at a high rate. Whereas a star such as the Sun rotates on its axis roughly once a month, a neutron star can rotate dozens of hundreds of times a second.

See also: Angular Momentum, Momentum, Mass, Sun, Planet