Sentences with phrase «angular momentum with»

Wolff and Patrone said: «If a fluid element has rotational and orbital components of angular momentum with respect to the inertially fixed point of a planetary system [the system barycentre] that are of opposite sign, then the element may have potential energy that could be released by a suitable flow.

The winds are known well enough for the calculation of atmospheric angular momentum with a satisfactory accuracy.

The constituent fragments that lie near the inner, planetary side of the ring should constantly exchange angular momentum with fragments further out.

When circularly - polarized light is sent into such a waveguide, its polarization state continues to change as it propagates in the waveguide and consequently, the photons exchange spin angular momentum with the waveguide.

Each time the state of polarization changes, photons exchange angular momentum with the device thereby inducing an optical torque.

Laws discussed the conservation of angular momentum with her, and how in order to execute the full turn she would have to bring her legs together in line with her torso at the top of her leap, just like for the half - turn — but then hold them there.

Not exact matches

But a photon with a very tiny «in between» mass can enter into an orbit of the spinning black hole and steal some of its angular momentum.

Because the wires interact with one another through gravity, they can exchange orbital angular momentum between them, rather like the transfer of movement between the gear bearings and the axle of a bicycle.

He set up his experiment to measure spin angular momentum of photons in high vacuum, with measurements based on the rotation of a two - inch diameter wave plate — a device that can alter the polarization state of light passing through it.

A planet's angular momentum equals the mass of an object multiplied by its distance from the Sun, and corresponds with the force that the planet exerts on the overall system's spin.

They compared those events with changes in the Global Wind Oscillation (GWO) index, a collection of climate and weather information that measures atmospheric angular momentum, or the degree of waviness in the jet stream.

If a skater spinning his partner suddenly lets go, for instance, the partner gets thrown away, carrying with her most of the angular momentum.

The main problem has to do with angular momentum, a measure of rotation in a system.

This twisting characteristic, known as orbital angular momentum (OAM), has been exploited by researchers in the past, with some showing that it can be used to transmit 2.5 terabits of data per second — the carrying capacity of more than 66 DVDs — through an optical fibre.

At the same time, the gas in the galaxy disks loses its angular momentum via viscous process associated with gas mixture, and falls into the gravitational center of the merger.

Spin transfer torque is the transfer of the spin angular momentum from conduction electrons to the magnetization of a ferromagnet and enables the manipulation of nanomagnets with spin currents rather than magnetic fields,» explained Gyung - Min Choi, who recently completed his PhD in materials science and engineering at Illinois.

This is in stark contrast with the conditions found in spirals, where most of the gas ending up in stars had an angular momentum appreciably higher.

Spiral galaxies are found to be strongly rotating, with an angular momentum higher by a factor of about 5 than ellipticals.

Next, Alice measures the total angular momentum, or spin, of the black hole — both its magnitude and, roughly speaking, how much it lines up with a particular axis.

A light beam with orbital angular momentum looks a bit like a helix or coil when its component waves are mapped out.

It is a concept that arises in quantum mechanics that can be thought of as being similar to angular momentum: in this sense higher spin corresponds to the quarks orbiting each other faster than those with a lower spin.

This process is much like the continuing breakup of turbulent water, spinning off ever smaller individual vortices, each with its own characteristic angular momentum.

If atoms are exposed to several laser beams with carefully chosen polarization and frequency values, then they preferentially absorb photons from the forward hemisphere, where the photon angular momentum and the atomic velocity are at an angle larger than 90 degrees.

Friedmann proved that for orbitals in which the electron whizzes around the nucleus with a lot of «angular momentum,» the ratio of the approximate and exact energies can be rewritten as the ratio of things called gamma functions.

But in the case of a hard - boiled egg, friction between the egg and the tabletop changes the direction of this angular momentum, says Keith Moffatt, of the École Normale Supérieure in Paris, who analyzed the motion of spinning eggs with Yutaka Shimomura, of Keio University in Yokohama, Japan.

When such a photon collides with a sodium atom, the sodium's own peculiar properties allow it to absorb the photon's angular momentum.

The exchange interaction refers to the magnetic interaction between electrons within an atom, which is determined by the orientation of each electron's magnetic «spin» — a quantum mechanical property to describe the intrinsic angular momentum carried by elementary particles, with only two options, either «up» or «down».

However, in most situations occurring in nature particles interact with each other, which makes it challenging to understand and calculate the angular momentum properties even for small systems.

Because a «small» protoplanet (up to a few Earth masses) lacks sufficient gravitational pull to open a gap in the protostar's disk, it will move inward as the disk lying inside the protoplanet's orbit transfers angular momentum to it at a slower rate than it is transferring angular momentum to the outer disk (through interactions with Lindblad resonances induced in the disk).

However the big - bang theory claims that all matter in the universe came from a primordial «egg» one hundred billion times smaller than a proton.7 With a radius of almost zero, that «egg's» angular momentum would be almost zero — even if its surface had been spinning at the maximum possible speed — the speed of light.

The angular momentum is so small that the jet has to be launched from the innermost region of the disk at about 0.05 au from the central protostar, well consistent with current models of the jet launching.

Therefore, with the «primordial egg» having essentially a zero radius, matter would have had an infinitesimal amount of angular momentum.

According to computer simulations, the variety of galaxy forms results from different initial parameters of the proto - galaxies such as the amount of (initial) angular momentum, as well as their later evolution in their environments, such as interaction with other neighboring galaxies.

One model involved an impact with twice the angular momentum of the Earth - Moon system.

This is called the conservation of angular momentum, and is often illustrated with the analogy of a twirling figure skater whose rate of spin changes when he or she extends or retracts arms or a leg.

When Bailin deduced the angular momentum of the warped portion of the Milky Way's disk and compared that measure with SagDEG's angular momentum, he found that, within the margins of measurement error, the two angular momenta are very similar in strength and direction.

We do know both mechanical energy and angular momentum are conserved quantities in any setup (with no dissipative processes, of course).

Also with angular momentum being conserved, it must fall.

Transport of momentum (linear and angular) within the atmosphere and ocean would be balanced by transfer via pressure gradient and coriolis and viscous forces and by gains or losses at interfaces with each other and the solid Earth.

(This has to do with conservation of angular momentum on the rotating globe.)

4) I say that when air moves from a location with high rotational velocity (m / s following a circumference) to a location with a low angular velocity, the air will conserve angular momentum and hence be diverted at right angles to the the initial impetus, resulting (at the poles) in a vortex around the pole.

'' This offers supporting evidence that the earth's spin rate is currently increasing, in agreement with Laws of Conservation of Angular Momentum due to a reduction in the earth's spin axis Moment of Inertia, that in turn suggests there is a mechanism in the current part of the Donn and Ewing climate cycle that is transferring equatorial ocean water to ice in polar regions.....

The climate cycles correlate exceptionally well with the 934 - year and superimposed 60 - year cycles in the inverted plot of the scalar sum of the angular momentum of the Sun and all the planets.

Thus only something with a sufficient momentum of inertia can affect angular momentum of the Earth.

Nor do any of the correlations with LOD, which may be an indicator of miniscule climate - induced shifts in planetary angular momentum, but almost certainly not its driver.

@PP: Thus only something with a sufficient momentum of inertia can affect angular momentum of the Earth.

As other posters have indicated with the point about how ice lost from ice - caps changes the angular momentum, the movement of water and atmosphere over the surface has an impact on the angular momentum and therefore a major ENSO event will show up in a LOD fluctuation.

In the northern hemisphere the oceans circulate clockwise and there is a component of this circulation that aligns with the counterclockwise rotation of the earth as viewed from above the north pole, a sort of negative angular momentum, so I would think that if the ocean currents slow down the earth's rotation would speed up.

I wasn't complaining about your conclusion, only your reasoning leading up to it («Thus only something with a sufficient momentum of inertia can affect angular momentum of the Earth.»)

The total CAM (core angular momentum) exhibits a principal maximum at a 15 - year lead with respect to LOD page 6/10 http://trs-new.jpl.nasa.gov/dspace/bitstream/2014/13763/1/00-0133.pdf