From Gk. anodos "way up," from → ana- "up" + hodos "way."
Ânod, loanword from anode as above.
pâdgereh (#), šekam (#)
Fr.: nœud ascendant
The point in an orbit where the orbiting body crosses a reference plane, such as the ecliptic or the celestial equator, going from south to north. The celestial longitude of the ascending node is one of the elements of the orbit. → descending node.
Ascending, from ascend, from L. ascendere "to climb up," from ad- "to" + scandere "to climb." Node, from L. nodus "knot".
Gereh "knot," from Mid.Pers. grih "knot." Farâzeši, relating to farâzeš "ascension," from farâzidan "to ascend," from farâz "up, upon, upward, aloft."
Fr.: nœud descendant
The point in an orbit where the orbiting body crosses a reference plane, such as the ecliptic or the celestial equator, going from north to south. → ascending node.
Descending, from descend, from L. descendere "to go down," from → de- "down" + scandere "to climb;" Node, from L. nodus "knot."
Gereh "knot," from Mid.Pers. grih "knot." Forudeši adj. of forudeš, verbal noun of forudidan "to descend, go down," (Mid.Pers. frôtihitan "to descend"), from forud "down, downward," Mid.Pers. frôt "down, downward," O.Pers. fravata "forward, downward," Skt. pravát- "a sloping path, the slope of a mountain."
An electrode that performs electron multiplication by means of secondary emission.
From dyn(a)- a combining form meaning "power," → dynamics + -ode a combining form meaning "way, road," used in the formation of compound words (anode; electrode), from Gk. hodos "way."
line of nodes
xatt-e gerehhâ (#)
Fr.: lignes des nœuds
The line created by the intersection of the equatorial plane and the orbital plane.
longitude of ascending node
derežnâ-ye gereh-e farâzeši
Fr.: longitude du nœ ud ascendant
One of the → orbital elements used to specify the orbit of an object in space. It is the angle from the reference direction, called the origin of longitude, to the direction of the → ascending node, measured in the reference plane.
gereh (#), gowzahr (#)
One of the two points of intersection of the orbit of the Moon with the plane of → ecliptic. Indeed, the lunar orbit is tilted by about 5 degrees relative to the ecliptic. The revolution period of a lunar node in ecliptic is 18.61 years. Due to perturbation by the Sun, the lunar nodes slowly regress westward by 19.3° per year. See also → ascending node; → descending node.
lunar orbit node
gereh-e madâri-ye mâh
Fr.: nœud de l'orbite lunaire
Same as → lunar node.
1) A point of zero → amplitude in a system of
→ stationary waves. See also
From L. nodus "knot."
Gereh "knot," from Mid.Pers. grih "knot;" Sogdian γr'nš "knot, bond, joining;" Khotanese grantha- "knot;" cf. Skt. granthi- "knot."
Fr.: nœud orbital
One of the two points of intersection of the orbit of a secondary body with the plane of reference through the primary.
precession of the nodes
Fr.: précession des nœuds
The gradual change in he orbital planes of a binary system.
regression of the nodes
pasraft-e gerehhâ , ~ gowzahrhâ
Fr.: régression des noeuds
The slow motion of the → nodes of the Moon's orbit in the opposite direction to the Moon's movement. This westward motion, caused by perturbations of other bodies, mainly the Earth and Sun, has a rate of 19.35 degrees per year, making one rotation in 18.6 years.