An Etymological Dictionary of Astronomy and Astrophysics
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Same as → rotational energy.

→ angular; → kinetic; → energy.

Adaptive optics: The angle over which wavefront phases become de-correlated by 1 radian rms due to → tip-tilt alone. It is defined analogously to the → isoplanatic angle.

→ iso-; → kinetic; → angle.

Of or relating to motion; caused by motion; characterized by movement.

From Gk. kinetikos "moving, putting in motion," from kinein "to move," → kinematics.

Jonbeši, adj. of jonbeš, verbal noun of jonbidan, → move.

The energy which a body possesses as a consequence of its motion, defined as one-half the product of its mass m and the square of its speed v, i.e. 1/2 mv².

→ kinetic; → energy.

In fluid mechanics, a quantity that describes helical flow. It is defined by the integrated scalar product of the velocity field and the → vorticity: K_K = ∫ dVu . (∇ x u). In the absence of magnetic field, this quantity is conserved by the → Euler equation. See also → magnetic helicity.

→ kinetic; → helicity.

Same as → Lagrangian function.

→ kinetic; → potential.

The temperature of a gas defined in terms of the average kinetic energy of its atoms or molecules.

→ kinetic; → temperature.

A theory that explains macroscopic properties of gases, such as pressure, temperature, or volume, by considering their molecular composition and motion.

→ kinetic; → theory; → gas.