New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1851-08-11

OF VI. s.r,,trn no. o~cUrr ing 10 him THIS article
on,,,,ed Remarks on me Jenlral rorcee OF nCuie
,, .bou; fixed ayes" was repu0Ished witho1'
.lr,tn The gtfil Eng 1lSer and Arc5decfs yonr-
,1 IIordon, Vol f. ls4i, Aprll Number ZANE
Icon, "a MADE IN tte June NUMBER OF the sduio
ma 70 reply 70 the ,ice OF MaIn, ~ 90
- Engineer OF the phGnII Iron WOES "ias
"a he glst Of which 4 sheer at the experiments
- ne American Philosopher, similar 20 "hat solne
- 81, engineers allow themselves now 20 substitute
- .rgu1aent lie admits the seeming accuracy VI
- s.ayireuts and dsDOses OF them thus sagfiy
~ erneunent with tioe and balls, though . mas
. ~ ,~.ssyCs If acc-racg Is undoubtedly pointlesS
qbe apraratus must have been exoeeoihsl ciuhsy "
o-,,4Ir 1yery high Increasing Ve.oculeS 70 mdhi-
icy, ,he action 81 this wonderful power.
~ .,oenments have now. however. been
.l, ,e-ea,ef BY ah independent Investigator
,~a sc1ye!el and al TIE important results arrived
az, Dr Martin. confirmed ans 0theTs dddeo' "mch
o.,.se N render fkls 'condsr'W PDtrT, ds IL i
llDs, 1870 derornlnaied hy The Glasgow ERg'nfer;
- e.f,us polo,r," IS Il Is sneeringy de-
'.,ed h, the Editor OF The S-isH,fytc AD>rrd7 IN
90 afl,s tns,ru,ab!, lac u nq''re, as II IS
ma ~ d. Martin ami ms n.lriy-ossTrsd PT'''at
Ian N nafsr. as We have chosen 70 Call H. INC ser
van, Of man and TIE means Of dong the inecndhcai
Iabor OF the world upon scale OF unfiYfieo ndsIl
fcence Dr. Marin introduces ms arIiele w =. .h
me y, follows o. will show, by reference 70 Lhe
f.Iailar examples Of the common spfing anu ny
wheel that IN a revolving BODY c>Hrv"gal UT,
Dbofeer he rs 7otrr', - mum gTe0'' ta" W. 49,
n,cess0ry 70 rls rotation g ne 1pfy G''l "'f "
Nf
theY explain how II may be proven BY simple e4-
nerlmcnt Writers on dynamics have never clearly
1shned the operation OF the laws OF clT'iihedi mo
non on bOdIes revolving around hxe1 axes. III CON
rIu,iop this writer says Since the velocity Of ro-
,a'ion Is almost unlimited, ftisherS Met fhilosJ il
= fywbecl. similar 10 the one described above
were revoked al the rate VI ] 200 revolutions
oiuuie the excited or centrifugal force IN the rim
would be equal n s,x,y tro and hat t"es me
sngnf # yo1rcr employed 10 gre tbe TequS ie rsochy
some deduction being made for friction and atmos-
pheYc resistance"
NM. says a leaned engineer, in private letter 70
me on the subject which he requests me not 10 pub
hsh. YOU make the great mistake OF coIiOundlng
rounds of torce or prsssur', with POUNDS oil poweT
which Is lust Us great d mistake a. II would be 70
con found paints d,Ou dt pots with pDpRds string
Not my dear sir, when you apply that force 70
bquid aud drive II out from under valvc a. the
rae Of ten feet secOnd-the rate calculated iM IN
vi SAWYER machine. Az force or pressure be
comes power. - shown m my frst rlclc "heh %
applied ~ % produce motion.
he, Ms cn1oayor to narrow these considerations
row 10 al ISSUE. The Editor OF Inc Ncienthc AmeT-
nm $50 "a eIj published Il set OF Mr. SaWyeTs dla
Grams of rs proposed Engine. and AZ the same
fimo came out with uncalie lor shower OF ABUSE
,guitc unbec0rnng a scientific discussion and which
1othDg bat an organic and uaconquerabic prOclivty
10 biillng.g,e and yulganiy can apologize for Ney-
erheless an attempt az argument hoated dlinly
Through the cuTrcn, of slime which, out oil Difference
10 the position Of the learned Editor, hshed up ana
tepied to Ny reply was partly emasculaed by the
editorial scissors, after solemn assurances that 1t
should be published entire, and then oyeTwhelmed
y another torrent Of abuse for It's alleged ynlily, as
( TIA, were it, own fault Nevertheless. n seems
dat enough OF plth renamed IN II 10 satisfy the pub
,heTs WHO. after attacking MS an three successive
anicies and admitting our multlldted reply, peremp-
0nly closed then columns against US Meantime. the
Editor, who began under excitement, ended IT would
seem. an parOxysm of rage, which becl0uded ms III
ielect Ancr writing through several successive
numbers of his paper, To explain what centrifugal
force u. he concludes by denying positively the ex-
i,ienCc OF any such force -
In CONCLUSION, the learned and courteous Editor
says " We have answered youTtwo man points the
rest Of yours Is mere gahble. And now We say there
no such force IN the universe as centrifugal lorce
and prove II against al the cenlrlfugal-lorce
philosophers whatever they have vet 10 prove the
srGcn0e OF such force Scientific Amcri,an, Aug
2 1851 An education AZ the bar has It's benefits, and
would have taught the learned Editor TO sustain a
defeat With more cquanimlly. Ny present concern
Nth HIM relates however, 10 what he sand before he
ute took leave of his reasoning faculties and MS
rood manners, while ne admitted both the existence
oicenrlfuga force, and the pregnant fact that m
rascS fbs rdfO NJ the square Of e retocg, which
az does continuously up To the time OF the HgTp IN
which hls argument expires.
In the number of July -, he admits that. cen
nmgai force lncreasesn The square OF the velocity
and he goes on To say that they twc could not see
how tins could happen, unless the power originated
luthc body " very little learning he says, would
Tasught upon thus point. To gire morins bofg
sOpbir tciOrifV u rtQasrS -four times the original
occ Triple the velocity, nine times the force. THIS
sa well-kgown law Of mechanics. II the centriiu-
ial force increases according 10 the square oi the
Velocity, the velocity N increased at the expense OF
snmcrcasc 0i power according to the square
Other writer's and even some who pass A. author
ties. have fallen INTO the same crros since the
Rnng Of my first arlClc. an anOnNmo reply was
received al your Office. The only point IN the reply,
a DENIAL of my second proposition, which Is " that
The rotation which evolves or demonstrates The cen
ufugi lotye Is rry ntarip doubled by double the
power applied tiCnce, he sticks upon the same
rock IS The Editor of The S-.mt6r Awcricm lie
tally admits tAc first proposition, IN relation TO the
utlo of increase of the centrifugal i0rce and that II
F doeS MOI rcyart gor tunes t9C y'rty applet 70 d0Hbe
t3r rte = rotation. mat all That We claim must be
After h,d answered the Editor Of TIE >rieafif-
tn,erlrau, hN pointing out The a'SUri results ot ms
supposed laW. IN The Smnle process ot turning a
FudSiouC->O that / supposed that any man who
kncW when hf> BRAN, We're OF would confess hiin-
self dead. he sll reiterated his position and hosictcd
himself up bN an authority seemingly confirming that
position
Hence 4 obvious that our ,s,ue lies Just hc,e.
The Nh0.C question is narrowed to The simple point
Whclhcr 80 turn a wheel ~ move a BODY twice As
last as 10 was turned or moved before II Is necessary
20 apply jar untS as much power know Il Will
,irhc The common reader strangely, tnat learned
md Sc.cNitc men, machiuistS. engineers. maihema-
ucianS aNt philosophers. should be UNIFORMED al
Nls late cay upCa 50 Sinp.c a pottt. They Wall. l
Tear, handy believe That Sutn Is The case. / assure
'ou, gentlemen. | ana nor AoaXEg YOU Every yes
'onS tests upon the assertion ot tins qracple Let
rs then meet the issue
In the tl>' place, SIMPLE experiment, which can
ee seen repeated any day a. ihc Office. 300 Broad.
way AID which any man. ooy. or erl, can then re-
zeal al home ~ tACI satisfaction proves positively
'AAi Il Is roi -, and tina NV second proposition,
heon which the whole string oi propositions confess
COW hangs, : one o. the simple every day primer
pes of mechanics
HIT there age men with whom authority is more
i''cn' V"W ia'h Lex rs LOOK, then, II authority
II TIE poriae poi-sr b then 3ontici With slight
addition 10 overcome The additional friction and al
'ho>lhCIC resistance, Il VII OC found. that III NOV
S through the same space, ~ the same tame. II viii
I've Twice the former NeNclty.'-ttr. hggui. and
vtAS Jour. Vol o., D. us.
nFsrof forces BE- SsecssSs e'g GpPted 60 ar-rler
A., tgsd. cbcattrS of Ssi;r lr1Hi giUeSccare, "a
'sssS tcSrl.f. ~ sny g,,. fHf U3i b. 40 fAe sane
rrror'pu toifi ;ss HrCeS.-hats'S MGfh, opfr1i Gad
PA ivS'. No.- o., p -
DPtrtBf eoaSfaHg foT Sta,rsf- sspcffiss Uisa
sFs as "a, iTspss-t 4 iAC fcr-sS md taHrs
Conceive The time 70 &c dnltei into exceedingly