In diameter, attached to a stretched fibre and having a M t ru e small magnetic needle fixed to its back, is arranged within a menu.
RUTHENIUM [[[symbol]] Ru, atomic weight To' 7 (O = 0)1, in chemistry, a metallic element, found associated with platinum, in platinum ore and in osmiridium.
Fusion with caustic potash converts it into a mixture of potassium ruthenate and ruthenium sesquioxide, Ru 2 0 3, which is a black, almost insoluble powder.
An oxide of composition Ru 4 0 9 is obtained as a black hydrated powder when the peroxide is heated with water for some time.
It is insoluble in water, but gradually decomposes, forming a hydrated oxide, Ru 2 0 5 H 2 O.
The sesquichloride, Ru 2 C1 6, is formed when a mixture of chlorine and carbon monoxide is passed over finely divided ruthenium heated to 350° C. (Joly, Comptes rendus, 1892, 114, p. 291).
Ru2C16.4KC1; Ru 2 C1 6.4NH 4 C1, &c. The pure tetrachloride, RuC1 4, has not been isolated, but is chiefly known in the form of its double salts, such as potassium ruthenium chloride, K 2 RuC1 6, which is obtained when finely divided ruthenium is fused with caustic potash and potassium chloride is gradually added to the fused mass (U.
Ruthenium sulphate, Ru(S04)2, as obtained by oxidizing the sulphide, is an orange-yellow mass which is deliquescent and dissolves in water, the solution possessing a strongly acid reaction.
It is soluble in water, giving an orangered solution which becomes green on standing, and gradually deposits the hydrated pentoxide, Ru 2 O 5 H 2 O (H.
Group VIII.: Fe, Co, divalent and trivalent; Ni, divalent; Os, Ru, hexavalent and octavalent; Pd, Pt, divalent and tetravalent; Ir, tri-, tetraand hexa-valent.
Pt, Ir, Pd, Rh, Ru, Os; Au, Fe, Ni; Sn, Te.
Ut bianc P.Nef ru:r?Llp 1457).
Here a fragment of the Hebrew original, which has happily been preserved, reads r ru, " wounded," where the Greek has veepbi = rt :J, which is manifestly a corruption of the former.
Dx ru i-x) C-Fi S= „ 7 o?I x o 1 fGO dx eu(ti-x) - 1 2Jo x i - x Thus, if we take _ 1 `°el 1 ('°° e uxdx G 7r12 Jo 1+ x 2 ' H 7r-N/2Jo -Vx.(1-i-x2)' C = 2-G cos u+ H sin u, S =1---G sin u-H cos u.
On the 13th of September Barberton was occupied K ru ger.
(63) 0-0 =Cg cos n f u Au), 6 (4) tan 4 - tan g =Cg sec ?if u f(u)' But according to the definition of the functions T, S, I and D of the ballistic table, employed for direct fire, with u written for v, (65) ('u du _ du T(U) - T(u), J uf(??) - f g (66) ru du J f(u) (67) g du f uf(u) and therefore (68) t=C [T(U) - T(u)], (69) x = C cos n [S(U) - S(u)1, (70) y =C sin n [S(U) - S(u)], 0-8= C cos n [I (U) - I (u)], (72) tan 0.
He was greatly helped in his proselytism by his two wives, one a Nepal princess, daughter of King Jyoti varma, the other an imperial daughter of China; afterwards, they being childless, he took two more princesses from the Ru-yong (= "left corner " o) and Man (general appellative for the nations between Tibet and the Indian plains) countries.
Hence, and b~ symmetry, we obtain -~ ru +qv ~P~+rX=M, (I)
Thus, at Delphi there was an image of Aphrodite 6rtrupt31a (" Aphrodite of the tomb "), to which the dead were summoned to receive libations; the epithets ru,u i 3capvxos (" grave-digger "), µvxia (" goddess of the depths "), peXacv%s (" the dark one "), the grave of Ariadne-Aphrodite at Amathus, and the myth of Adonis, point in the same direction.
A gentilic of the form Ru-u-ai occurs in a letter (of an Assyrian king?) to chiefs in a (Babylonian?) town as the designation of three captives (Harper, Ass.
Bezold, Die Achamenideninschriften, p. xii.), who have Semitic names; and Ru-'-u-a is the name of an Aramaic people mentioned with other Aramaeans by Tiglathpileser IV., Sargon and Sennacherib.
It is not impossible that some such people may have settled at Urhai and given it their name, although the Ru-'-u-a are always mentioned in connexions that imply seats near the Persian Gulf.° The district name Osroene for 'Opportvi t, is Greek, perhaps due to analogy of Chosroes.
The mountain Ru-u-[a], mentioned thrice by Tiglath-pileser IV., is placed by Billerbeck near Hamadan (Sandschak Suleimania, 82, 86, and map, 1898).
" One made this, another that; Tane made trees, Ru mountains, Tanga-roa fish, and so forth."