The Hartford republican., 1913-11-28
ART OF WEIGHING.
Wonderful Scales That Are Not
Made of Anything.
THE LAW OF FALLING BODIES.

ada and the Calculus Of Differentials,
xbe seisht Of Suns and Planets May
Be Accurately Determined.
Ykse art of weighing has expanded
iRsss = comprehensive science and can
- ssxger be called a mere art. Scales
ass Hkode of metal, but the set herein
<5sssyssed. is not made of anything.
sssaes are ia hourly use that can
wsiTf a pencil mark whose length is
onx 5t,rth OF an inch: or a section Of
n kszr OF equal length The usual
prarzse in weighing runs from grains.
snxsv-e. pounds up to tons. usually one
frss- -sE,d then up to fifty or more tons
I'm s.sis,oad weighing. costing hundreds
assk fhous;nds of dollars.
Ei~ numans would find 1t quite diff
s-ssiH 80 make scales that would weigh
mihs<xs- billions. trilliOns. QuadrilliOns.
s7sainssSj9ns. sextilliOns. septiliOns. Oc-
tlIfstxe and nonilHons Of tons. or de-
cIsfsssxsL An instrument able to weigh
-
dsr s1e oeDt-a pencil. The scales are
nse Asssee OF metal; instead set and
dzcsk specific speed is the next to all
T,suvr1Ii engine used. But it Is far
fnarp easy to run locomotive or
sfssasaesfiiB without knowing a single
law sef these complex machines than
sn s>ss.s attempt to use the speed
sscais.x without knowing every minute
Stes3G ~ every velocity law Of NOV
inE ssanes.
Los n street ear start from rest and
zsrr 1eoving faster and faster until Its
ssse .c1 znetieR is. say. twenty miles
pes k.sur ar the end Of one minute II
the sysseis OF the car increased uniform
- Asxf.ng the entire minute its aver
aze sysesf is ten miles per hour. be-
eausc IT started from rest and in
o..sususrd 10 twenty miles per hour. II
= n.sxsy moves during one minute at
swsHse miles per hour the distance
cszu.es-d win be speed multiplied by
sisn.e. or twenty miles multiplied by
ssase-skzfieth Of an hour or one-third
OF . vale: but the average speed In
s-zse - fhe car Is ten miles per hour.
80 s,tss the distance moved over is half
M ssrssa1 or One-sixth mile. This is
ssssa.szsentai law OF nature and Is Of
ssssEscns importance.
law For uniformly increasing
spsss& starting from rest. the velocity
iAsnssses with the time. but the dis.
tzns,s sraversed is that moved over by
aise ue0sing body with Its average
spsssd or esne-half.
" measuring the distance fallen
thnSSssh by a body let fall at the rig
sSsy exact beginning of one second OF
cishs no the ricidly exact end thereof IL
siIsssrslt. what shall he said of finding
hax sast IL il Telling mt the end OF the
sserrssa. 90 try. work from the ages OF
s,wvTSS ia sixty years daily aud you
MIN TsB. The fact Is. the time required
g~ sn.1 the mathematically exact spe-
r-iSsr speed Of II falling body In still air
yyas almost that required TO measure
wfs si,Siance OF The nearest star. about
7-Jt ysssrs
'TvN.an Atwood invented his machine
=gIut fSriS finally came to some near ap-
y'TasS & ~ accuracy. But this instru
Iss.tf y precision fell far short Of the
.'is- 81 seal chr0uographic apparatus
tEksss all Of this very complex meghan :
iaas e. In perfect order It releases the F..
7sH 50 tln exact BEGINNING Of sec
NTH aOd records the absolute time on /
tsp cylinder of n Chrnuograph electric |
;sliy And repeats the process at the ab- /
-''1sS ,snd Of the second 80 far as hu- /
rssH iiands are able To DO rigidly accu- !
g-t5,s v1erk
'F'se moment that those supprmpn. /,
$eVSun and Iichntz. discovered that |
'IlJgSty power. beside which all else /
tazaGsa pales inlO inslgnlicance-the |
sssg2fs ssfdous calculus or dfferentials-
ssy,-gy mathematician saw Immediately |
gItss GEe of natures most magnificent /
laws ANS found In falling bodies And |
'fis~sa Scgan the relentless and arduouS I
'ssst imposed work Of more than n hun.
= lss.ii years 10 find the set Specific speed |
:sssrairsd by falling body Mt the in
AssaDeous aud absolutely exact end |
nc shsA first exactly measured second OF /
'rSs0e since man appeared.
Tue result Is one grand. all potent. |
as sr,werfui mean or average OF n cen.
tsTy of world wide measures. the dia-
-osond OF diamonds. the most valuable