Tensas gazette. [volume] (St. Joseph, La.) 1886-current, 1914-10-30

osl inc extremely delicate nature of the
wmss' together with the sensitiyeness of
slA'n sense contained in its delicate face
sNves. enables the bat to Judge the distance NJ
ny object by the lapse of time hetvs.n ths ssrd.
me OUT and the receiving of the waves II a
w s4ceptional mechanism and not anv facultv
~s'ns IN the dark. which enables the bat to
sns1nsiy without the least light to guide II.
was proved hundred years ago by the Able
snssni' who made experiments by biottinR
49, ws eyes OF bats with red hot irons and found
~ tnsy got along just as we'll without eyes a
vaA them. Other experiments. without Cruelty.
~ y made to show the same thing
We al know that II we capture wild bird and
x1s.s In large room with closed windows,
"skes wild and furious rush for what its
slses tell 1t 10 an opening through which It can
spe. its eyes do not reveal the presence OF
uass' and the result 10 Q broken neck
liberated under similar circumstances makes
ssme dash for freedom. The Tapping of its
.S.' however. brings its sixth sense into action
soon perceives that It IL face to face with
sene wall and stops short before It touches
- slass
~ Hiram proposes to apply this sixth sense to
ssoing vessels. His apparatus will produce at.
pheric vibrations of about the same frequency
nose produced BY the bat. but of energy at
- three hundred thousand times as great
- VIII not be audible. but they will travel
vea and recorded by . suitable apparatus at
dstance. and would be able to travel at least
- niles and return back to the ship q reflected
80 that would be strong enough to be detected.
dsscribtng HE invention. Sir Hiram states
~ might be considered IN artificial ear. The
C.entus II provided with q large diaphragm
ssv drawn over Q drumshaped cylinder and
snanged that the atmospheric pressure IL al
~ The same on both sides, quite irrespective
ny air blast. II IL therefore always able to
".sss freely in response to the waves Of the
- and its vibrations are made to open and
- certain electrical circuits which ring Q Sc
. q bells Of various siaes. II. for example. the
~esct 70 very small or at Q very great distance
4 - ne ship. . very small bell rings. while q
- object at . distance of two miles would
larger bell and . very large object q
~ hfyer bell. The apparatus gives an audible
anything 10 ahead Of the ship.
s.otnsr apparatus, similar to the FIRST ID pro-
but instead Of ringing q bell It produces .
em OF the disturbances in the air-that is,
~. mere IL no noise except that due to the
q the ship or the sea waves, . wavy line
Esesesd on paper, but whenever the vibrations
out by the vibrator strike an object and re-
ne wavy line on the paper becomes very
noreased in amplitude. % - to b easily
- n: and the distance that the object 10 from
~ can be measured by the length Of the
UP between the giving on Of the vibra-
~ !. - me receiving Of the echo. In this way
snce Of the object can be determined with
= 3aoie degree Of accuracy, and the size
oesect may be determined By the amplitude
waves that return.
~ eSDerafus for producing the atmospheric
49,. should BE- placed we'll forward On the
= Or in any other position whore n can