Full text: [Mathematische Physik] Theoria attractionis corporum sphaeroidicorum ellipticorum homogeneorum (5. Band)

16 
THEORIA ATTRACTIONIS CORPORUM 
Ceterum adhuc observamus, quum substitutis pro x, y, z valoribus per p, q 
expressis, functio W necessario fieri debeat identice = 0, etiam identice i. e. 
independenter a valoribus ipsarum dp, d q fieri debere 
0 = (Xr+p.Z74-vF)djö+(X'T+p;Z7+v'F)d2 
sive haberi 
XT-f-jxF+vF = 0 
= 0 
Hinc sequitur, quantitates jav'—vjx', mX'—XV, X|i'— {iX' resp. ipsis T, Ü, F, 
sive cosinibus angulorum QX, QY, QZ proportionales evadere, quod iam e 
supra dictis, sed remanente signorum ambiguitate, colligere licuerat. 
11. 
Ab his disquisitionibus generalibus ad corpora sphaeroidica elliptica descen 
dimus , quorum caussa illae fuerant susceptae. Initio abscissarum in corporis 
centro sumto, semiaxibusque per A, B, C designatis, aequatio superficiei erit 
- i VJL i i 
AA' BB' CG 
Statuemus itaque ^ = 22 + S —C unde patet, pro omnibus 
punctis intra corpus W obtinere valores negativos, positivos autem pro omnibus 
punctis extra corpus. Porro erit T = U = F — statuendo 
itaque 
erit 
/ / xx I 
yy_\^L\ 
B x i n*' 
cosQX = pb> 
cos QM = 
cosQF=—|-g, cos QZ = 
J_/( q — *)* I i b ~ y)y I (g — z ) z \ 
«|»rV 2^ "> J5.B "T“ CC / 
z 
fec 
12. 
Iam introducamus duas indeterminatas p, q tales ut fiat 
x = Acosp 
y = B sin p. cos q 
= Csinjo.sin^ 
2:
	        
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