Barrow, Isaac, Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur

Table of contents

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[71. _Theor_. IV.]
[72. _Theor_. V.]
[73. _Theor_. VI.]
[74. _Theor_. VII.]
[75. Lect. XIII.]
[76. Æquationum Series prima.]
[77. _Notetur autem_,]
[78. Series ſecunda.]
[79. Not.]
[80. Series tertia.]
[81. Not.]
[82. Not.]
[83. Series quarta.]
[84. Not.]
[85. Series quinta.]
[86. Series ſexta.]
[87. Not.]
[88. Series ſeptima.]
[89. Not.]
[90. Series octava.]
[91. Series nona.]
[92. Not.]
[93. Series decima.]
[94. Series undecima.]
[95. Not.]
[96. Series duodecima]
[97. Series decima tertia]
[98. Not.]
[99. Laus DEOO ptimo Maximo. FINIS.]
[100. ERRATA]
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page |< < (58) of 393 > >|

Lect. VIII.

III. Dico fore AC. AN : : KC. KN. Nam ducatur KH ad
CN parallela.
eſt igitnr ang. KHN = CNP = CNK = NKH.
hoc etiam è ſuperiùs generatim oftenſis conſectatur. adeóque NH
= NK.
itâque cùm ſit AC. AN : : KC. HN. erit etiam AC.
AN :
: KC. KN.
IV. Corollarii loco notetur (ductâ CP) fore NH = NK;
& triangula HNK, NCP aſſimilari; vel eſſe HK. HN : : NP.
CN.
V. Porrò, conftantibus iiſdem, dico fore AC. KC : : ACq
- ANq .
CNq. Nam eſt NP. CN + AN. CN = HK.
HN + AN. CN = HK x AN. HN x CN = AN. HN

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