The castle of knowledge / [Robert Record].

  • Robert Recorde
Date:
1556
Catalogue details

Licence: Public Domain Mark

Credit: The castle of knowledge / [Robert Record]. Source: Wellcome Collection.

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    tphofc diftaunce a fonder imay well be marked by a quadrant fet fb in place conuement,thac it may ftand iuft plumbe with the flatte of the horizont, and be tourned full fouthejThert obferuc many dales aboute the middle of lune thehygheft point that the fonne wyll afcetid vnto, and fliine duely tho> roughe thofe &o fighter in the rulerjmouingc it hyglier or lower, as occafionferucth, tyllit ftande exad;ely point/nge theheyghtcof the Sonne at no one beyngcat the higheft^ -Thelyke obferuation (hall you make diuerS dayes before,at and after the myddle of Decembre, tyll that you be affured of the iufte heighte at noone of the fonne, beyrige at the lo^ weft then toward the fouthe^The pointes of thefe two Gb> feruations well marked in the edge of the qiia'drante,are the true places of the two Tropikes rand the diftaunceDf thofe ' two markes a fonder by numbre of degrees,is the very true diftaunce.of thetwoo Tropikes^ In the”iufte myddle:be> tween thefe twoojropikes is the place of the Equino(ftialI circle^Example^^itn vs,wherethepoIe is 52 degrees highc^ the winter tropike wyll be 14 degrees and a ha'lfe abotie the :Horizont*thefommer trbpike and a halfe*andthe]Bqui>i ;no(rriali iufte 3s degrees in; heighten And-the numbre of degrees that are betweene this Equino(fl:iall and any one of the tropiks is named the Greateft declination of the fonne,- whiche in our time is about 23 degrees and 28 minufes»Thc other pointes of declination of the degrees in the ecliptikc line from the equinocSial circle,bicaufe they be many in nif-^ bre and diuerfe in vie, I thinkeit good to expfefle in a table whichhereafter (Iiallferueyou forfundry vies* ^ Scholar^ The like table is in OrontiuSv \ i Maften Not cuenthelyke, as by conferring you ihaye perceatie: but for the vfe of it, take what degree you lift of anye Signe,and by this table you maye knowe his dccli> nation from theEquinodlialicircle^ TheSignesare writv- ten partelyc on the headde of^ the table, and partelye on the foote of the fame ♦ The degrees^ in the fvrfte — — columne The gfet'e$ decUnatioTf ofthefonnt
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