Crombie, A. C. Descartes

8/10/2019 Crombie, A. C. Descartes

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a w r a le t trat t at could not be othe v se. F r, a i gr p t at ati , t ee trat w p l , a

t t at a it wit t sm llpa f wl ge "W t t w r R art d

lar t wp t t at pla ia g t pr ip l re l tio rie it t t r i ti r l tiga t t f r " a al t " fr t te a p , w d prt a l all , a rt l ara f a tal a" t at t p alw rl wa er a a tg l . B a e t e ltimat law ofat r w r t law f a ,e r t g at r lt t l r t t r arra g m t f p rtl g a r g t t e law al t al g tr , p r ap D artest g a i t, e r ated

a t f r expr g t e l ws ia g rai at . He t p t forwar t al r gra f all t r t l

: t tr t fr t ll str r pl a t t r

all t w fa t t l a t t er f w fa t .ll t t r t al p a

a at t r ali at f t al a g e t r t al t w ic

t la t ta l f r a l r gulari il be w t i l fr

mi um er f fu a tal uat , writt er ap a gl gl i e sc l d aa N w marta a a arri i

t t t r t Cart a pr graof l i g f r t xpla at f tp al w rl i t r f t a

. t t r w a wit datt pt at r al t ri Al ert

g 0 , b h m d m .h d t

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Ei st i er r H e rg, am got ers. e i f Descart , we er, is i di p t ble rst pri iples

e rl ll so e i t t t it is o lc ar t r ta t e i r rt t t t m" wer t t e utt e begi i g f t se rc

T re c o d bt of t re luti ar ar t r a i f c rt t e reti l ig t a pr gram.T e rad x i t at ld a x rci rofou d a i e r mew o fo d is appr a e se ti ll dita t f l d w re t ome of t em t mpor t f i f a tal a

mpt ta l lC r tia ge , t e gre t Dutat ti ia a a tr r w ef t r d a i t at fr f

arte , adm tt late i life t at l o l g r a pt a t a m ll

p rt f C rte a i B t s idt it w e art Pri c ples fPhi os hy t t r t op d i to

e e De rt , ai , a t lexp d t f il r f t e ol p ilt a r i it pla a

w c ul u r t d f r all t tx t i atur " ft t a ew t r l ti t , t l ga

car w t l a t t alpr p a .D art m l a t r g

t t i p r l t , at ati leal f r a fail t fa

of t mpl x t at re a te ig a f matt r T failur wa peci ll appar t i p l g , t li t w ic tur t ar glOu f fa lur a pr , w r,D art xtr t d a t r tr tt i t c t i g a wa as

rt t orig al t r t l prgr it elf F r to tur t xper td p t esi , s owed imself to e

t rst gr at ma t r f e p ti al

t 1 t w

l T a a tial t li ll i t c t gat i re i al del f i l g al ro s

De cart di pla ed e m t i ge i uex r f i m g ti e experime tal g u .

e rt w r M r ,6, t La H , a ll d t

tr cti t w o e r r Cr e iTo r i e H f mil wer of t e et te-

b esse, lo g i go er m t r ice; it r w cou lor to t e Pa1 e

of B tt Fr is m t r, w o di t ft r i irt , e i rit d dr g a p l plexi ,w e ept til e wa r 2 . Hls i erited roper fr m her t tg m complet a al de ce B au w a d l te ild, itw t g t t at w ul ot li e lo g.Bu d i e for i cti i i d lg e rl pa i f r tu

W e e w 1 i fa er se imto t wl e ta l e it c ll gof La Fl c , w r e r ai ed f reig t a alf ar a r e ex ell ti t at em r ed logi ,m ral p il p , p d met

i , l i al g tr m er

lg ra, w ll a uai t witt e r t l pi w r f G lile .All t mai ar t ri t of is mipp ar r i l at a Fl c e. tr t t l , fell i lo ewit p tr . Far fr i g a ge m terw l a g m t r" ( s l s de-cript of i , D rt s im elfwr t a arl e a , t O y ica:T r are se t i t e writi gs oft p t m r ri t i t oseof t p lo r T r a t t

p t wr t t ug t ia pow r f imagi atio T r are i u , i a i t, f wle g P ilr a uc t t r ug t r a

1959 SCIENTIFIC AMERICAN, INC


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r k h m r m h m n -n h e r e b

en f y s n Des em s k n n e s m re n e -s f s A f e r be hess n r m n s e

s nen s r n d n ns n

h m n f e r pl den e d b n ded -e men s ery

sh ke A e e s q re h b h rs s e r h s fe s e fr m er n rk nd

e e e n be ere e f nd

bl o dul m f l h n n ry n r

hen e 20 h n r d

n fr m he Un y f P res r n P r h bme n m n f f h n s m h

PO T T OF D C T F n H h n n um e d h rk n e phy y, p ych ,

p n n my. n n er h m the a er dernph phy He died n h t r t e Q een S eden



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c y c cer him. e ye e r e e hem

c ys s e r meWe re n b e o Be ckm n jo r-

n l di co e e 1905 f r o fl gh n his i Desc es if Iw s im f e f s ery; he ym n s m m e h incre bpee er br d ss r men o q es

ons Desc r es o g on he r ck e e h by h ch he s o emhe ni c ion h m n knowledge -on sing e ce r se remi .

On M rch 26 1619 D c r -p r e o Beeckm n e ir l c ce hic ill l f ener ll n of blem h c n be ro-

p se i ny e k n f n i yco o r di o n s e ch in c-c c i h s re o h lm s o h ng il rem n b di c -ere geome ry Th D c esnn c men of h s d c er of n l -

ic e me y or s Vo re w ecribe i h me h d o ing lg br c

on o c r s " D sc r 4 h-c n r coun r n Nicole Or m

contr b d om hing ow rd hisde . In he 17 h c n ur Desc r co -em or ry Pierre de F rm w s o m kehe s me disco er q i e nde enden y

he did no follow i . D c r esdi pu l sh h n w science i163 hen he included n his e s yGeometr b h expo i on o he rci es n se er l p r c l r p cions I s ener l y is here how nesc r es demons r ion h he c cec ions f Apolloniu re ll con ined sin le e of qu dr ic e u ons.

Since con c sec ion incl de he circ esof he ncien ronom rs h llip sof Jo nn s Ke l r nd he p r bolused G lileo o de cr be he r jecory of rojec ile i i pl in h Des-

c r rs n n ion pl ced owerfool in he h nds of ph sicis W hi N w on h mself would h ve u ere crippl ng h ndic p

c l r f r hi m g hckm n D c r es h d c e-

br ed exper enc p rh ps he mo mr n nd cer inl he mos dr m icf his whole lif e h d jo ned he rmy

of he Duke of B ri no h r Fr nc lli s in he Th r y Ye r W rn fo n himself n w n er q r ers remo e l ce he D be. Much c-cu ied w h h s ho gh s he spen heh le No ember 10 sh up lone he f mo s po le (l er l y s o e bc l y erhe ed r m) I heco rse he y he e im rd c ions. ir he dec de h he m s

pe imentation in nu ea pa ti e otion anene y one o o many p o e i to t e utu e



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Solid Fue s ar simp -

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EXC L N

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THE S R

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c i i i ork R s fo thDir c ion of th Mind i ed i 1628

li ed o mo ly d heDisco s M thod, ic e ro ef r li g i e N erl d . eforecom l i g l er e ega ork ne M ors e Dio ics d -

o y c e re d e l-lu a io of o r of m oda li d o ci c li e of i v ig iow y li ed i e D sco s i 1637 M il y 1628 hd ed o e n g of e -iga io di c e y of r r c -pl e e o o ded h d

o s o Fi s Philoso h , bl he n64 F om r i le e m eduickly o e l or io of i c o

gy ic comple ed L nd n633 u i ld fr m bl c -

o of lil o' condemn vi v io wi i oper c n

m mi ig d y id a ll mo o rel ve p li d i 1644 dee i l Pr nc l s of Philoso h . me ime De c r e orki

h co ce on of he rel ion i beee e mi d d e m c i y fhe body d i ork Passi s

o Sou om le d n 16 9) hebro g yc ology i n e comof i y em

er e mo rev li g illu r ionf e e of i !e od i D -

c r e Dio rics e c r c e i ic llyo c e o a d olve e o l m of co r c g ele co e o io al c e i c i c lecco di gly e r ke r ly-i of u of lig : ce i ll dw co ig ou glo le f ma eformi g a ki d of r lig i amec ic l e om o a i a e

C N L OL O H IN L ND n Descartes' physiology s diag a ed nI ages all on etinas

( )n e conveyed to t e cere ral ven ricle

,4, ; these t en or single inoc la m ge on he pineal gland ( ), t e site row ich t e soul controls t e ody. imula ed by e image t e soul inclines e pinealgland activat ng t e ra lic s ste o the er es ausi g a t o e at

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v t i g ut xt i t u le p f t i g t it ue tu T i ivi i f t l it t tw u u ll x lu iv lltiv l x u iv lm f ug t xte i l De te w g e t u i f

tu e T e k f e e w w tu e f m he p i ipl t

u e f ve hi g h t h ppe u t t ti i u f iti

I w t e v t f t i g w i h i e e e l tt wh l f ph i l tu ul ttel e e u e mp e h l w f h g v D -t w k it v lu i i

i p t e D e hi elf xpl i i f th m ti f

i l f v i u h pe iz f

e i l p pe i m i tit t ll e m g eti m lig tt pe ti f he he v u

t m th u e f i f ti f b m y t

e i ve tig e eti t ive xp i t T

v t e f thi p g w it u i g;e i pl i e g i

ll e ue u el uti tivel C i g f m the h f t izi g p g m De e ge -l ph i l g u p i -

i gl l t e ti l u lit tive w t f ll b k pe l ti f th ll p f my k wl-

g wi h ul h he me h t e h p u e e h

w p i g t u-tiful f u e

i i t u f ilu e ui f t v te f i p g th l w f ti t lv

i lu i t ti lp p t f tt w exte i i

p f pu el ti ll i Si i t a riori ul

ut p i ilit it i t l vt ue ti p pi i l t tF t upp l i tp e t t u te f -

i t t l ft ut i p t t f tt l t i lu e i w e

t wt i ti f Hii t i ly t i v lu

l lu i f x pl u t f t v ti f i i u i ti f ui l t f ti ipl f i e ti But g et i llti l i f i

t b v i ti ll w t l-li i e i e w D tt t f h ub t w i t u -

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WE LA T

A SHEGetting a miss l o th g ound s just th rst step n p ngman nto spac or in d liv r ng a ayloa san s fmil s away w th minutes afte som bo y else s ushe abutton You also hav to m ke sur t e "b ine en of t ebird ach s its assigne estina i n, an es h t's s

sed to do wh n it gets ther

T s ply reli e e ectric ower f r f z n , te emeter , nc , APCO ha eve o e M N AP m n e

ener tor tha rovi es up t 20 s of p er n fe en o t u s of AC an DC.

T c m act, li h - eight ower n e f c ine a ds e e It ses e hot a gener e y s f el to fee r e t at r s an e ectric gen r t r 60 000 r m n

sis orize spe c ntro s govern AC freq encies to precise limits

M N AP is a esu t T APCO' c n re e rch to developthe secon ary po er sys em o t e e Ask s in early todiscuss ou s ec c aux r er re remen s

' eo GRO PThomps Ramo W ldridge Inc.

D . -1 9 v d 1 h'D SIGN S A A NUA U Y , UB Y PO H U U



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TH W ERI LS F R GRES

KEL-r PASC H TRIGGR FAS600 0 rounds per mi te ! That s the sti g of he Vulca

new 20 aircraft ca on roduced at the General ElectricCom any' Missile Productio Sec ion, B rli gton, Vermo t w a big assist from 3M KEL-F Brand Ha o

rocarbon Po mers.lcan s electrical red. Hence, its bolt and pin m st

be s lated. EL F P astic met he rigid criteria for theg pi li ers beca se i is oil esistant, ha extreme

favorable h gh tempera ure properties, includi g a lowoe cie of expansio KEL F Plastic was spec ed foese reaso s a d also beca se it is eas to mold

KEL-F isa Reg T M of 3M Co.

The la ic gate hrough two mall or ce must meet

olerances a close a .001 " an xtre ely d cul moldingj a e eas er KE F Plast c' moldab lity Ye , heKE F Plas ic l ner (see arrows n nse ) perform wellunder he exacting eci ca n emanded he extremeempera ure ranges encoun red Liner molded G WPlastic E gi eers, Inc , Be hel, Vermon

When ough nsulat on problems have ou u n the a rremember KEL F Pol mer The are di g increas nguse n m ss les, rockets and a rcraft app icat o s. Theirperforma ce character stic are yours for the as i g

M I L D I V I I

IN ESOTA M G A D MA N U F A C N G C PA N W H E R R S R H S H E K E Y T O T O O O W

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Crombie, A. C. Descartes

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