Salusbury, Thomas
,
Mathematical collections and translations (Tome I)
,
1667
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1 - 30
31 - 60
61 - 90
91 - 120
121 - 150
151 - 180
181 - 210
211 - 240
241 - 270
271 - 300
301 - 330
331 - 360
361 - 390
391 - 420
421 - 450
451 - 480
481 - 510
511 - 540
541 - 570
571 - 600
601 - 630
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the right line B B P. </
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<
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>Next ſuppoſe the Earth to be moved from
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B to C, and
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Jupiter
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from B to C, in the ſame time;
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Iupiter
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ſhall appear to have paſſed in the Zodiack to Q, and to have
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moved ſtraight forwards, according to the order of the ſignes
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P
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In the next place, the Earth paſſing to D, and
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Iupiter
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to D, it ſhall be ſeen in the Zodiack in R, and from E,
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ter
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being come to E; will appear in the Zodiack in S, having
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all this while moved right forwards. </
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>But the Earth afterwards
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beginning to interpoſe more directly between
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Iupiter
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and the
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Sun, ſhe being come to F, and
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Iupiter
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to F, he will appear in
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T, to have already begun to return apparently back again
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der the Zodiack, and in that time that the Earth ſhall have
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ed the arch E F,
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Iupiter
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ſhall have entertained himſelf between
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the points S T, and ſhall have appeared to us almoſt
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leſſe and ſtationary. </
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>The Earth being afterwards come to G,
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and
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Iupiter
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to G, in oppoſition to the Sun, it ſhall be viſible in
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the Zodiack at V, and much returned backwards by all the arch
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of the Zodiack T V; howbeit that all the way purſuing its even
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courſe it hath really gone forwards not onely in its own circle,
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but in the Zodiack alſo in reſpect to the centre of the ſaid
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ack, and to the Sun placed in the ſame. </
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<
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>The Earth and
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Iupiter
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again continuing their motions, when the Earth is come to H,
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and
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Iupiter
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to H, it ſhall ſeem very much gone backward in the
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Zodiack by all the arch V X. </
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<
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>The Earth being come to I, and
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Iupiter
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to I, it ſhall be apparently moved in the Zodiack by the
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tle ſpace X Y, and there it will ſeem ſtationary. </
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<
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>When
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wards the Earth ſhall be come to K, and
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Iupiter
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to K; in the
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Zodiack he ſhall have paſſed the arch Y N in a direct motion;
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and the Earth purſuing its courſe to L, ſhall ſee
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Iupiter
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in L, in
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the point Z. </
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<
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>And laſtly
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Iupiter
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in M ſhall be ſeen from the Earth
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M, to have paſſed to A, with a motion ſtill right forwards; and
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its whole apparent retrogadation in the Zodiack ſhall anſwer to
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the arch S Y, made by
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Iupiter,
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whilſt that he in his own circle
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paſſeth the arch E I, and the Earth in hers the arch E I. </
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<
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this which hath been ſaid, is intended of
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Saturn
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and of
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Mars
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alſo; and in
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Saturn
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thoſe retrogradations are ſomewhat more
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frequent than in
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Jupiter,
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by reaſon that its motion is a little
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ſlower than that of
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Jupiter,
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ſo that the Earth overtaketh it
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it in a ſhorter ſpace of time; in
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Mars
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again they are more
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rare, for that its motion is more ſwift than that of
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Jupiter.
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Whereupon the Earth conſumeth more time in recovering it. </
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<
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>Next
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as to
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Venus
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and
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Mercury,
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whoſe Circles are comprehended by that
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of the Earth, their ſtations and regreſſions appear to be
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oned, not by their motions that really are ſuch, but by the anual
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motion of the ſaid Earth, as
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Copernicus
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exellently demonſtrateth, </
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