Let the curve represent an elliptic orbit, AB being the major axis, DE the minor axis, and F the focus in which the centre of attraction is situated, which centre we shall call the sun.

His father belonged to the class of Dihkans (the old native country families and landed proprietors of Persia, who had preserved their influence and status under the A ab rule), and possessed an estate in the neighbourhood of Cus (in Khorasan).

If we mark off a segment AB along the line of action so as to represent the force completely, the A moment is represented as to magni FIG 15 tude by twice the area of the triangle OAB, and the usual convention as, .o sign is that the area is to be reckoned positive or negative iccording as the letters 0, A, B, occur in counter-clockwise or clockwise order.

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This is the axis of the required screw; the amount of the translation is measured by the projection of AB or BC or CD on the axis; and the angle of rotation is given, by the inclination of the aforesaid bisectors.

AG is the axis of the bore, ab the dispart, A'DG' is parallel to AG.

It was destroyed in 1260 by Llewellyn ab Gruffydd, prince of Wales, with the supposed connivance df Mortimer, but its site was reoccupied by the earl of Lincoln in 277, and a new castle at once erected.

Arguunt nos quod jejunia propria custodiamus, quod stationes plerumque in vesperam producamus, quod etiam xerophagias observemus, siccantes cibum ab omni carne et omni j urulentia et uvidioribus quibusque pomis, nec quid vinositatis vel edamus vel potemus; lavacri quoque abstinentiam congruentem arido victui.

It is generated as follows: Let ABC be a circle having AB for a diameter.

The diagonal AD of the parallelogram, of which AB and AC are adjacent sides, will represent, both in direction and magnitude, the motion of the rain as apparent to the observer.

If the current flows from A to B there will be heat absorbed in AC and evolved in CB by the Thomson effect, if the specific heat of electricity in AB is positive as in copper.