Stevin, Simon
,
Mathematicorum hypomnematum... : T. 4: De Statica : cum appendice et additamentis
,
1605
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3 L*IBER* S*TATICÆ*
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<
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xml:space
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">& </
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<
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xml:space
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">per ea quæ de navi paulo ante diſſeruimus pater,
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tum equorũ potĕtiam eſſe maximam cum lora currus parallela erunt viæ æqua-
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bili videlicet & </
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<
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">duræ, nam in aſperis, inæqualibus, & </
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<
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xml:space
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">arenoſis ſatius eſt lora po-
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nè paulò inferiora eſſe quam ante. </
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<
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xml:space
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">Quod Batavicis ciſiariis experientia eruditis
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uſitatũ eſt, qui currubus ita aptatis lora cum per littus maris aut per alias planas
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duraſq́ue vias vehuntur ponealtius firmant quàm in aſperis arenoſisq́ue, hic
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enim quamvis horizonti parallela ſint ſalebris tamen non ſunt, quod in pertra-
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hendo ponderoſius & </
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<
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xml:space
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">difficilius eſt quam ſi poſtilenæ pone humiliores fo-
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rent quiatum ad ſalebrarum paralleliſmum propius accedunt. </
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<
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xml:space
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">In locis areno-
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ſis ubi currus altius arenæ inſidet, etiam rotæ deſcendunt, ac propterea quoq;
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<
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">ſilora horizonti parallela ſint plus negotii faceſſunt quam ſi pone depreſſiora
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fuerint.</
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<
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">Objiciat autem quis primò, Cur dixerimus H K eſſe ad H I, ſicut pondus libræ
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obliquæ ſi quâ hîc eſſet (cujus vicem equus ſubit) ad currus gravitatem; </
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<
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">Fortean ratus
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im proprie uſurpari gravitatem currus pro pondere rectâ attollĕte gravitatem currus.</
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<
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xml:space
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">Secundò cur funis E F nul-
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fig-527.01.100-01
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146
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527.01.100-01
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http://echo.mpiwg-berlin.mpg.de/zogilib?fn=/permanent/library/xxxxxxxx/figures/527.01.100-01
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lam ſitus differentiam annota-
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verim, qui per currus gravitatis
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centrum trajectus equum fortè
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leviore aut ponderoſiore gra-
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vitate afficiat, quam ſi vel ſupra
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id vel infra meet. </
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<
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tionibus quî commodè occurri
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poſſit, & </
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">ſimul {νρ}αμμιχῶς evin-
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ci proportionem expoſitam eſſe
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legittimam, A B C currus eſto
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è mathematicis lineis efforma-
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tus & </
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<
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<
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">, rotæ
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D, E, via cui inſiſtit F G, de-
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nique funis ductarius libræ obliquè attollentis poſt paulò exprim endæ ſit A H.</
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<
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">HVic currui μουο{νρ}ἀμμω& </
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<
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xml:space
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">imponito priſima I K, quale in ſubjecta figurâ vi-
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dere licet, ut A H continuatus, occurrat priſmatis centro L: </
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abliquè attollens pondus M priſmati ſitu æquilibre; </
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