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Title : Oeuvres complètes de Christiaan Huygens. Correspondance [de Christiaan Huygens], 1666-1669 / publ. par la Société hollandaise des sciences
Author : Huygens, Christiaan (1629-1695)
Publisher : M. Nijhoff (La Haye)
Date of publication : 1888-1950
Contributor : Koninklijke Hollandsche maatschappij der wetenschappen. Éditeur scientifique
Subject : Huygens, Christiaan (1629-1695) -- Correspondance
Subject : Huygens, Christiaan (1629-1695) -- Contribution aux mathématiques
Subject : Huygens, Christiaan (1629-1695) -- Biographies
Type : monographie imprimée
Language : Latin
Format : 23 vol. : ill. ; 29 cm
Format : application/pdf
Copyright : domaine public
Identifier : ark:/12148/bpt6k778547
Source : Bibliothèque nationale de France, département Philosophie, histoire, sciences de l'homme, 4-R-788 (6)
Relation : Notice d'ensemble : http://catalogue.bnf.fr/ark:/12148/cb38949978f
Relation : http://catalogue.bnf.fr/ark:/12148/cb38949978f
Provenance : bnf.fr
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The text below has been produced using a process called optical character recognition (O.C.R.). Since it is an automatic process, it is subject to errors you might find in this page.
The recognition rate for this document is 87.44 %.
CORRESPONDANCE. t66o.
45~
/A W. sec. H. m. sec.
E.g. Suppofe Tt~~A nth in the Morning,
when the Sun half appears above the Horizon, the
Watch points ac 5 30 io o 10 g
In the Evening, when the Sun appears half
fët,at. 5 20 6 !t 1 59 50
To know by the Watch the times e!apPd be-
tween both, (ubdu~t the time of the rifing. 5 30 io
From. 12 0 0
Refts. 6 ap 50
Whereunto adding the time of the fetting. 5 20 6
There cornes for the time elapf d between them t ï 49 56 <~ 49 56
Whereofthe hatfis. 5 54 58 5 54 58
Which added to the time of the Suns rifing. 5 30 !0 o to 3
There cornes the time of the Watch when the
SunwasintheSouth. n I 25. 8 6 5 t
To which adding the Aequation of the t ith of
7~ 0 7 45 0 7 45
TheSumrneis. 1 1 32 53 6 46
Seven days after, viz. M~~A 18, let the rifing 1
oftheSunbeobferv'dandtheWaichpointthenat 5 ï9 4 1 II I 58 57
Andathisfetting,!et the Watch point at. 5 25 2 i o 4 55
To find the time elapf'd between them, fub- Oy,
duét the time of the riung. 5 !9 4 i ï 58 514)
From. 12 o o 24 0 0
Refts. 6 40 56 12 t 3
To which adde the time of the fetting. 5 25 2 0 4 55
And you 'I (ind the time pait bqtween [hem. 12 5 58 2 5 58
Whereof the halfis. 6 2 59 6 2 59
Which adde to the time ofthe rifing. 5 !9 4 II I 58 57
And you have the time when the Sun was in
the South. Il 1 22 3 6 t 56
Whereunto adding the Aequation of~c/t! 8 o !o o !o t
TheSummeis. t! 32 6 !t t 57
WhichSumme if ithad agreedwith the firft,viz. !t 1 32 53 6 !2 46
then had the watch been fet to the right meafure; but feeing the latter is lefs
4) Lisez: 5~.
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