246 MEDITATIONES MEcHANICE 
P— 5217! a== 19025" DO— ap —5 
s=— 9°15 90— a—70° 35" L.fin. pe = 9:961:067 
es = 6142! 90—4 O4 s 
P 4 = 35° 1730" ln TE 8,8889883 
= = [30° si = 30° si 0" addil.rr.:......38,8s01o5o—4 
z 
L cof. p... — 9,7849406 
noms tps 66° "8 30" Leofis = 29943156 
2 19,7792562=—=B 
9O—A—p+-s A—B —19,9709388 
M 1-5 
L fin, 2x = 9535469 
Lx— 29045" 
— 4° 26! 30! 
Erit ergo x — 40° 8/ 10”, qui arcus in tempus conver< 
füs dat 2° 40/ 33/,ita ut. obfervatio faëta fit 9" 19° 274 
témpore vero. 
$. 95. Cùm autém in altitudine folis 4 error aliquot” 
minutorum poflit effe commiflus, hinc hora inventa in- 
certa reddetur; quanta ergo fit hæc incertitudo', operæ’ 
pretium erit indagare. Sit ergo altitudo folis vera= 4+a, 
ubi & errorem in obfervatione commiffum denotet atque 
témpus à meridie in angulum converfum fit reveraàx+£, 
fn.a—fin-p fins & of 4) EN PRe 
coj.pcof.s 2 Ex cofpcofs 
Jam quia ob à & # valdè parva , eft cf (x HE) — of»: 
— À fin. x,& fini( a+ à) — fin: a+ à cof, a ; erit £ fin. » 
= —4c0/.a co]. 4 
Fa de Er ps Jus 
$. 97. Error igitur in tempus redundans ed erit major; 
quo 1. Minus obfervatio diftet à meridie. 2. Qud Major ‘ 
füerit declinatio-folis. 3. Qud major fuerit elevario poli. 
Et 4. Què:minor fi altitudo folis. In exemiplo ergo antè 
allato , quo-erat p— ç22 27/, 5 9915 a— 190 
25°, & x — 40° $/, error eriré— — 25433 2. Unde fi. 
& feu error in altitudine commiflus fit $’, feu inrem= 
Pore== 20"; erit error in horæ determinationem inde or+ 
tus = 48" qui, cbm integrum: minutum nôn-exhauriat, : 
eritcf.x— 
