The sun. [volume] (New York [N.Y.]) 1833-1916, 1898-09-04
TEMPERATURES BY SOUND.
ELECTRICAL ARRANGEMENT TO HEAB
HEAT OR COLD.

by Means of n Peculiar wire n IIusHina
Occurs IN n Telephone Attached, which
Ceases when the Accurate Temperatures
Is Recorded on n Dlal-Penry to Try lie
It is now possible to hear heat and cold. DIR.
George c, Whipple, biologist Of the BROOKLYN
water works, has invented an electrical In
strument by means of which tho various
ranges OF temperature may be heard in an or
binary telephone receiver. Explorer Peary
owns one Of these instruments and no has
taken it with him TO the Arctic regions to lis
ten to tho intense cold which prevails there.
He had one Of the Instruments with MIN on
his last Arctic expedition, and he was able TO
lower the end Of 10 into a crovasse in n glacier
and hear how cold / II was there.
The apparatus Is very simple In construo-
ton. In external appearance IL is like an or
binary electric battery box. such as is used In
sick rooms. From one side of the box ex-
tends a very long insulated wire carrying q
small coil Of bare wire on the end OF II. From
the other side OF the box extend wires which
hold n telephone receiver. The latter is to be
held to the ear so that the temperature into
which the bare coil is thrust may he heard.
It is the presence OF heat or cold acting on
the bare coil Of wire which causes an electric
current to set up a buzzing in the telephone.
When the instrument is used the telephone Is
held to the ear. while the listener looks at q
dial on the battery box. This dial. which In
appearance Is like the face OF an ordinary me-
chanical thermometer, is marked with figures
representing degrees Of temperature above
and below zero. Let one suppose, for instance.
that he is to listen to the temperature Of a pail
of water. The coil OF bare wire is thrust into
the water, and the observer places the tele-
phone to his ear. There is a hand or pointer
pivoted In the middle Of the dial face. h
nhaarycr frrna tho pointpr from TUurn IN NUs
ure on the dial. When the telephone is first
placed to the ear n loud buzzing sound Is
heard. This Ia because the pointer does not
happen to be at the figure representing the
temperature OF the water in which the bare
coil is placed. AS the pointer nears the figure
that indicates the correct temperature. the
buzzing sound in the telephone becomes faint
or. When it comes opposite it stops alto
gether. As soon ds the buzzing stops. the OBJ
server knows that the temperature of the
water has been found.
DR.. Whipple tried the instrument the other
day in q room the temperature of which was
about TO-. The reporter placed the tele-
phone to his ear and heard q loud bu7zing.
Pr Dr. Wh4 HI sh moved mems the RS9iR Wet r t9whrd The thhss
buzzing stopped This was bee use use the he tenn EN-
bare barr coil coil Of Wire, between both hands: The
buzzing in the telephone began again he.
Cdubb tne WuTIILu VI hNS huilI hIu no thO
s Sroand Until It tn re ssRSfdis ass, The bSnzziag
stopped again. showing that the temperature
OF the hands had been found.
tD Than tsmd DR. rrS TihiPEPEEIs s l diGGlf' TIE + % bashia and be asla
again. and the pointer had to be move ,for;
ward, until the temperature OF the lighted
BR nsjn y vas w6 69gnd' The ThS 6G s9il was be thTps and ipt9 9iS 4
g gS! i sGPPE ansi t f%s e eo1 Pc the T tep %Szsa sH y he
basin. When the coil was held against a piece
Of ice the pointer had to be turned back to 15oo
The instrument is now used in the State
gineer in the Basement Of the building should
of the see st SshisFaSH deo 1T coils eoHsi has been Ipiiaced
behind the wainscotipg in the Court House
f9f ths sSs ct tss RisEes e q { @@3tS 'et s%Psqa.
f Sis e he a had merely ere the TO dIaf p6 6hs eie mPntiI! the he
p~erature OF the building in all its parts with
out going out OF the engine room. oa.
storage warehouses to ascertain the. tempera-
tpre Of the various rooms without opening
twas necessary to keep the refrigerating plant
operating, under high pressure all the time.
and it was not always advisable to do that; So
cold as po saiB d. Now each room in the ware
house has IN it one 81 these new g e el effrie, t 6ess
to q series OF push buttons upon the office wall
and throws into circuit one after another the
t Rs4g6onss, By IN p ths gnF tho tei E9S%s q 70 f his
ear and manipulating the dial he is able ac-
~,urately to determine the temperature OF every
The new thermometer can be made to ring
an alarm. and hence would be useful In the
powder magazine, Of Q warship. PERHAPS its
the United States Weather Bureau.
It is the purpose Of DR.; WShipple to carry on a
sfFlsf q e. e%xpe9iEE Perrin anti S EiIta MIS- t rs bas bsea
almost impossible with the apparatus which
heretofore has been In use by the Weather Bu-
reau to obtain a continuous record Of the ten.
upon this depends the efficiency Of the Wealth:
er Bureau predictions; In fact, it IL SAID thai
mostly upon what is learned of the condition OF
the elements ;1stnm high above ib0sett the S EARTH B. W 91e %
eogia Be beS sent Sp In i a captive Balloon Ds or ri On 3
kite string and Kept in operation for days. A
very accurate curve representing the spcces-
slye tds%f ~ this %sg OF th IS qtR Re Go al5 RIsns % VI GSl
periodically affect the surface of the earth al
ways exist up above for some time before:
hand, some very accurate predictions might DO
made as to weather in store for US.
The Hinstrgment Is another exempliaSsatt doE
the bare coil Of wire IS realiy, Q very small hol:.
low tube. In it are two parallel wires. one OF
which Is made Of German silver and the other
determined by means OF the two wires is be-
cause Tsnt = each Tasi 81 them % @BRESsses eS S9 an sieq radic Sig-
II the German silver wire and the copper wire
eLlh have the same resistance at 50o tempsra-
ent in each nc" one. The ratio, Of electric Te-
BY taking advantage OF this fact Or. Whipple
ances In his dial box which balance those OF
the bare wire. The. automatic calculatlon OF
the temperatures which cause these Gaa1 tEhIs
really remarkable apparatus is the product OF
the combination.