tidal force


Also found in: Dictionary, Wikipedia.

tidal force

A force arising in a system of one or more bodies as a result of differential gravitation: different parts of the system experience different accelerations. This can result in the production of tides and in general terms elongates a body in the direction of a nearby massive body, producing a tidal bulge. The force can alter a body's rotation rate until it is equal to the revolution period: this is true of most natural satellites of the planets, including the Moon, and is the case in some close binary stars, e.g. RS Canum Venaticorum stars. Tidal forces can lead to tidal heating of the interior of a body, and in extreme cases can lead to the disruption of a body.
References in periodicals archive ?
The parameters used for the evaluation need the inclusion of the tidal force parameter [F.sub.tide] = [rho].sub.0] [Aw.sup.2] sin wt, where A is the tidal excursion; in this case A should be less than the channel width (A = 20 m) [[rho].sub.0] = 1000 kg/[m.sup.3]; v = 0.01 [m.sup.2]/s is kinematic viscosity, tidal frequency (w = [w.sub.M2] = 1.4052 x [10.sup.-4] rad/s), and earth's rotational angle velocity [OMEGA] = 7.29 x [10.sup.-5] and [alpha] = [pi]/3 as the constant geostrophic current velocity.
Lunisolar tidal force and the growth of plant roots, and some other of its effects on plant movements.
This shortening is attributed to tidal forces raised by the Moon on Earth.
Filscot added his name to Morlock's Ludlow tally in October when he beat Tidal Force by half a length in a two-and-a-half-mile novice chase, with the third horse 23 lengths further away.
Tidal Force looked a sure-fire future winner when running the smart Bluagale to four lengths on his chasing debut at Chepstow and he should make a successful return to the same course in the Wye Novices' Chase.
Timmy Murphy had the Paul Nicholl strained gelding jumping in springheeled fashion and the pair eventually galloped home four lengths clear of Tidal Force.
The conclusion was that Saturn's tidal force kept them from condensing into a satellite.
Tidal Force initiated a 69-1 across-the-card double completed by Cruikadyke at York when taking the 6f maiden by a length from Annapolis.
TSUNAMI TERROR: Wreckage in the Maldives, a Christmas tree is carried away by the floods (left) and, below, Julian and Lorraine Such; 1; DEVASTATING: This satellite picture shows the Sri Lankan city of Kalutara shortly after the moment of the tsunami impact; 2; TIDAL FORCE: The satellite image shows the tidal waves battering Kalutara less than four hours after the quake hit
The charity believes parents who want to control what their children consume are 'struggling under a tidal force of marketing they cannot fight'.
"A move to disengage at the last general election became a tidal force last week."
Due to the tidal force of the gravity monster, the gas cloud has become further stretched, with its front moving now already 500 km/s faster than its tail.