1) kerré, 2) vârâné; 3) kerridan, kerrandan
Fr.: 1) traînée, entraînement; 2) traînée; 3) traîner
1) General: The act of dragging or the state of being dragged.
From O.N. draga, O.E. dragan "to draw," from P.Gmc. *dragan "to draw, pull," from PIE base *dhragh- "to draw, drag on the ground" (cf. Skt. dhrajati "pulls, slides in," L. trahere "to pull," Rus. drogi "wagon."
Kerr, kerré, kerridan "drag," cf. Laki keronen, Hamadâni kerândan
"to pull along, drag," Tâleši kernye, Tabari kərəš "to drag;"
Lori, Hamadâni kerr "line, scratch;" related to
Mid/Mod.Pers. kešidan, kašidan "to draw, protract,
trail, drag, carry;" kâštan, keštan, kâridan
"to cultivate, to plant, to make furrows;" Av. kar- "to strew seed,
cultivate," kāraiieiti "cultivates,"
karš- "to draw (a furrow), till, plant;"
cf. Skt. kar- "to scatter, strew, pour out," kars-, kársati
"to pull, drag, plow;" Gk. pelo, pelomai "to move, to bustle;"
PIE base kwels- "to plow."
Fr.: entraînement de l'éther
A hypothesis put forward to explain the null measurement of the → ether drift. According to this hypothesis, the Earth somehow drags the ether with it as our planet rotates on its axis and revolves around the Sun. However, the ether drag hypothesis contradicts results from several experiments, including the → aberration of starlight.
kerre-ye cârcub, cârcub-kerré
Fr.: entraînement des repères, effet Lense-Thirring
The alteration in the → free fall motion of a test → mass in the presence of a massive → rotating object, as compared to the identical case of a non-rotating object. This dragging of → inertial frames is predicted by → general relativity. Also called → Lense-Thirring effect.
Fr.: traînée de Poynting-Robertson
A loss of → orbital angular momentum by tiny ring particles associated with their absorption and re-emission of → solar radiation. Also known as the → Poynting-Robertson effect (Ellis et al., 2007, Planetary Ring Systems, Springer).