New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1855-09-06


tn. Scientific american devotcs another article TO
ahe subject of locOmOtOn, without appearing to ex.
haust or the resources OF science. 1t is gratifying
70 see that now admits the existence of the law that
atmospheric resistance whatever it may be- increases
IN the duplicate ratio of the velocity Of moving
body. That may now be considered settled The
ony portion of its remarks which to call for any
comments from US is the following:
TIM ssks questions espsctns lhiei heh
.rd.ons method Of sending PeSasei .n0sa rs '0
sAys when you have 90, nd OF emospnee ressahee Is
move load will, level TO with an aece
srsied velocity like that falling body This cannot be
Aused by the attraction of srsviaon the force OF which IN
yasosS tram UPON eSe OF parcel IN tobe with
the Inophere resistance removed coed nJ o. moved oy
force acquire accelerated velocity because they
oud have 10 overcome and variable resistance AZ
tvery point along their whole course The expression OF Inc
TSBUSE constant force which more th1n soe Dse
losd very We presented no Arguments sgan
M plan Of sending messsses aud through
q vauurn tube; would really Ike 70 see II tired
Here is torhaps new law for the attraction OF grav
Rator but what il is do rot understand, no. being
able 10 Get any distinct idea from the statement that
.he force increases according to the square as two
bodies approach one another The law that gave
Immortality TO the name OF Newton teaches for one
thing that the force of gravitaon between two bodies
u nyersely the square OF the distance between their
<enteTs of gravity But the distance between the
o.n.er Of gravity of the earth and i:s surface is
.reat that few hundred feet more or less makes no
sensikc difference it, square: hence accord
ing TO Newtons statement Of the law, bodies falling
abort distances above the surface are acsuated BY
constant force and dc in fact &c they ought to on
This supposition, move ig rqcv0 with uniformly &C
ceeratd velocity. which s always as The square o.
3he time from the BEGINNING of the fall docs 10, d
Ssr sensibly from it. That a body would fall wi,A
more rapidly accelerated velocity perm.tcI 70 ial
~ raep0 from the moon o. the esrhs ccacT a. gravity
We do not deny. We were talking OF . body !aI!.nG
freely IN short distances neer the slrace and 1 s vel
Known that at the end Of - second second O! fall
viii b. moving four tmcs At thc end Of TIC bird nine
times at he end Of the ourth si1en tes A. fast a.
9, the end OF the first second however last or slow u 4.
ray be. Now II body be npeiied b. very cont sni
force such as gravity according D. ths Sevton.sn
law NAV be consdered for yery short ds'AncAz above
the surface OF the earth and il BE- resr'hd Otiy ~
constant Soroe a. that Of friction mast ~ ng'ef ~
ne impellng force. provided i be gTsai'f hsa u.s
resistance. We viii s1pI0s1 Ae .mpeLb2 bf" ~
equal that Of gravity a. he s1fiscr VI ~ earn a.
tbe whole resistance % be ohy hfes fp8fs a. great
1eD tic body viii move dsfing ihe ire ss/"'1 r'sa~
toarth a. fsl - il would fall 'sy IN is sam 4Re '9i
N the Dort s4oord IL yso>ty sp4A ~ qeAA'aF@A
and 10 or. II 4 would nj fnDrs ua9s VII Ii< Firm"
t(e AH.eyican b. good etoggh y, ~ q ~" "rS''4
1ovs' Wien w. slpks II e Pei S~sslsE - q
LsTd We meant hat u shs,slf - ~ I'z.fss. -
meet hs rsss.anoe bst fntiv,s All >r'.Afs re si.H
have sddsA ',yo'gh, u sva4a e. ,<'s<''"fsy - no
ss<s.SA - s.A%IsG, Issss kSSs s'sS'"s. 40"