Galilei, Galileo
,
The systems of the world
,
1661
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with the ſame charge, and at the ſame elevation or diſport towards
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the Weſt, the range towards the Weſt ſhould be very much
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ter then the other towards the Eaſt: for that whil'ſt the ball goeth
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Weſtward, and the Peece is carried along by the Earth Eaſtward,
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the ball will fall from the Peece as far diſtant as is the aggregate of
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the two motions, one made by it ſelf towards the Weſt, and the
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other by the Peece carried about by the Earth towards the Eaſt;
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and on the contrary, from the range of the ball ſhot Eaſtward you
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are to ſubſtract the ſpace the Peece moved, being carried after it.
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>Now ſuppoſe, for example, that the range of the ball ſhot Weſt
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were five miles, and that the Earth in the ſame parallel and in the
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time of the Bals ranging ſhould remove three miles, the Ball in this
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caſe would fall eight miles diſtant from the Culverin, namely, its
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own five Weſtward, and the Culverins three miles Eaſtward: but
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the range of the ſhot towards the Eaſt would be but two miles
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long, for ſo much is the remainder, after you have ſubſtracted
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from the five miles of the range, the three miles which the Peece
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had moved towards the ſame part. </
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>But experience ſheweth the
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Ranges to be equal, therefore the Culverin, and conſequently the
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Earth are immoveable. </
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>And the ſtability of the Earth is no leſfe
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confirmed by two other ſhots made North and South; for they
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would never hit the mark, but the Ranges would be alwayes wide,
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or towards the Weſt, by meanes of the remove the mark would
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make, being carried along with the Earth towards the Eaſt, whil'ſt
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the ball is flying. </
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>And not onely ſhots made by the Meridians,
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but alſo thoſe aimed Eaſt or Weſt would prove uncertain; for
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thoſe aim'd Eaſt would be too high, and thoſe directed Weſt too
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low, although they were ſhot point blank, as I ſaid. </
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<
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>For the
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Range of the Ball in both the ſhots being made by the Tangent,
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that is, by a line parallel to the Horizon, and being that in the
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urnal motion, if it be of the Earth, the Horizon goeth continually
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deſcending towards the Eaſt, and riſing from the Weſt (therefore
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the Oriental Stars ſeem to riſe, and the Occidental to decline) ſo
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that the Oriental mark would deſcend below the aime, and
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upon the ſhot would fly too high, and the aſcending of the
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ern mark would make the ſhot aimed that way range too low; ſo
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that the Peece would never carry true towards any point; and for
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that experience telleth us the contrary, it is requiſite to ſay, that
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the Earth is immoveable.</
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Which is
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med by the
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ment of a body let
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fall from the round
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top of a Ship.
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* That is, at the
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foot of the Maſt,
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upon the upper
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deck.</
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The ſecond
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gument taken from
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a Projection ſhot
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very high.
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The third
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ment taken from
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the ſhots of a
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non, towards the
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Eaſt, and towards
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the West.
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This argument
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is confirmed by two
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ſhots towards the
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South and towards
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the North.
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And it is
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wiſe confirmed by
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two ſhots towards
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the Eaſt, and
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wards the Weſt.
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<
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>SIMPL. </
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>Theſe are ſolid reaſons, and ſuch as I believe no man
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can anſwer.</
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<
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>SALV. </
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<
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>Perhaps they are new to you?</
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<
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>SIMPL. </
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<
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>Really they are; and now I ſee with how many
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mirable experiments Nature is pleaſed to favour us, wherewith to
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aſſiſt us in the knowledge of the Truth. </
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<
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>Oh! how exactly one </
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