BSTJ 20: 1. January 1941: Abstracts of Technical Articles by Bell System Authors.

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Abstracts of Technical Articles by Bell System Authors

Tuo papers by Reerend Thomas Bases A (asim palicntion from the
Philsephicot Transaction, Val. LIT, for the yea 1753. This acme bas
haan proper ander the eioction of W. Edwan’s Dering Senior Macher
nuatian of the Bazeus of tke Causes, Washirlan, fr copy of the
Phileophical Trassetions in the porsaion of the Mevel Okseretony
Washington. An investing foroword ta che volume has beam sopped
by Edvard. Molina ofthe Tell Tesphoae Lauran. ‘The volte fx
slableat the Department of Aieulture, Woshingls, D.C. pie 1.0,

‘he SsbjastioeShrprers of Sinetad Teloston Tages! MW. yane
ws, Ja. Saal sized motion pictures poles at of fran in sila
tien of the images rqroduced by home television secevers ae ise fn
ftatstial study af the appreciation of shargnee. Sharpness, nthe
jective sense found to free mor ad anu ly athe ky)
esthation of the image it incense. Inuges of present television grade
te shown to be wilin a teghin of diminishing return rth zespect 0
esatlen. Waquality of aoezotal sxe veel rents fe feued tot
Avery une reqieemeat onthe shares ofa ie, especialy of
fairly San oe.

Syuctonisl Frequency Madalton? W. H. Domeery. Pry te
exomoat practical problem in FMC transmitter design b that of sabia
‘on of ehensean oc erslar resem. Crt etabity required, but the
ddavct use of «crystal woul novevsiriy gh ae tea cont bette the
factors whieh sabiice the Sraqueaey ane those Which ae to produce the
Asia weiation,

To Svachronied Lrecueney Boalason, whit kes ite fas: appene
nce inthe Het vat= Wester Ele 5034-4 Rai Teasing Ea
text this ra em ig solved by asseciating the cra inet ita che
salem in» monitoring role which igares the cil rmqeeney sation:
due to madelstion and vende only to vata inthe meas frequency
“hiss dane ly aking a spe of te cata ofthe eeguescysewated
fletric wailior and shrinking the specttan sown Ugh & oeceston
of froqueny divider to aboot 1/5040 of tae Lanse care fee
quency. 1 then cans of a sirong central cater (about A eycke)
with & fem deqece of phase modlation, Ibis i then easnpared with

+ Pics Rigs 15h
cyst standod ieise wat 5,000 eye) ina device whch praucesa
rotating mgatic fl? the <iference froqueney. An artetore which
Fine this eld eoatrol he tuuiug onsener of the ign wir osee
lktor, coming to rea when exact eynchroniva attained, ‘The sll
thse erations aceompanyiag lation are ot followed becouse ofthe
Inia of the stem.

"Tae sei Hus obtained forthe mann eequeacy Ss identical hat of
a cystalosilatar. She the eval rontrol fs eck, no staining
outage is requ, ao hat tiles inthe contel system ool est in
Fodder degartures in srequeney.-Mecianical csatcol, mnrcnst, com
Bletels reeves the rislleting eer of aby connector wih the ti
Fravon of se accu fremereyy sa that che rod atiny range i nt re
ritol, This and other seirenats in cesian sera Trogeenzy exco™
ne of uli ofKlaevele wit esters low dsertion

DineShort Ware Fransmssion Oher & 30-Mile“Optiat" Pathe CR,
‘eyouvap, A.B, Cuswrenn, and W. W. Mouroxp. Continns reonde
Taltyeshor-wave tenamiaton on wive legs of 2 and mir over
food “optical” path, ave sown variations fo the rceved signal strength
‘These varitions sum be explained as lelng due to wor nterfereac; an
“uterferonce which varie ita tho eles in che compositor of the ope
sphere,

‘me of the vitor ate dt changes a the dieecri wastane ga
nt of she atmosphere near art Otter vst ors are expiable in
{erm af rellecions Fem the sacuuaies at the boundies 0 iferen.
sir asses. ‘The erval acd anne! meteorological factors whi alle
the rntemiesion are densa

1 Praade of Propras the Uso Bice Pubes. Part Inthe Pst
cf Comuricnion® 8.8, Wweaaat, The dependency ofthe art af conic
ication on the scien of el tonice io grea ao to make review of
progres i clecronts oat of cesta rene of se Hel fern
Stora Whe i tru shat shear ors of selephove an san
Sommurietonauvensee to degree witout the vse oe ertunle devirs
seoee know them tad, Inerepatin ofthe wrcnwt aliens ex em ie=
fond genestor of higfosymsesaleaasingcorent= FC years just pre
Ceding the fst Worla Wer sucka « tarsirg peiat ih tas eedapen
the commanzaion evi. Fro that day to this Lie progees oe
fronice nal couuniations is qe band in fend. Tie need of the
Communicates engineer for ner eleeuunic tole hus kept him cently

Ril ite, acon tie, Decne 18,
aging Ue elesinie engineer (0 Jiaprove old eviews and to ofiginate
ew ans, al etch tie the ein ee ter have heen remade with
Sucees the fulls af his work lave leo ives appied ta produce
ew unl iio sartling sracles of lngedlanoe comanatio,
‘Because of the else =eatienship of ele-oni nel commanintions i it
vecesaury i roving the proges f Fuels derade te keep in mind that
[i pogeee in electrons ane in eommumicciane wea ie our eee,
sil ke neeesary to survey the oexde in torevicentons dng the

sein aces rene the wile mivseary to ek to what exe the
snug whic Is een eae sue so avaees inthe etree Bld ane
Wha aeaines inthe elimi ievines themes have Ind he foun

liom af this progress, There In tats no atempt mae to make ths e
iow conprchensive i Uke sense Usa iil al tems of progress which
feof indvicualincerest. ‘To do so stuuld make i erly a ratalog of
‘hese samy advances aman Sle vo the yt Hata of the we
jist. Res the objet ine been o Uses Ue me signicane trend of
‘developmen: inthe vasious fede at Uo etapa tae ne of nce
sbich ppt :o be mst closely vce tthe gence dietior of pros
ve aver Sele lei! comune

Yee Lovaton af Hystiess Showamene ds Rost Sul Cryst WP.
Matos. Monautemerte she ease proptrtie of an urted yall,
he slcoletec contans ty, ant she cltped ier comatant of
Rowell ac crys show tha ynctiely oT ysis ae eiiation
tfc ate assole withthe elzrped dilate popes othe crystal
A theoretical formulation of the equations please crystal has
boca mae which takes account of the dissipation ffs, Te foto
in given for the polsisnton theory. The fequcney variation of the
clampot dighcris eastant mea iterpuetol yy Debye’ tiny wf li
trike add to rake account of hystctss les, iadiate that thee are
ow camponerss ane of which fez neste with fea igh viscous
shtaner ihevews the other one oes not. "The non-vecone component
has a vie constant of about 1D) as OFC ave ie probably ue to the
Aplvenieat of He ons the lire souctne, “Te sn corroent
Taga artic estan f about 149 a O°C al sont dee Te
aiple: of che Rocnlle sal: Bath compenauts Neve higaer dilectic
orstan:s a hysteresie becscen the Cae pile ily + ep
"ve ation ofthe molecu oe lr cont ome se er tre ei

A New Beondeas-Transmiter Cit Desig fr Frequency Modulation
J.T, Monuisos,” The problem of generating widen! fesuenes-mild-
ns nut SesraM TECEHICAL rOvRNAL

lated waves at seviemed in onde to nsectain pecially the desired
performance capbiiie for «commercial ranoaster cut. The fectore
‘hich ofuence ox Bini tree perforce capabilities inthe two methods
Tvalile forse geneetion of Fequoney-moduleted yaves, compensated
‘hase meislsing, and diver fequeney medaltion, are then explore
Tis foul that each rethoe poses deabe fundametel characte
ties not present ia the other, bal with che ckeuis now gerezally em
Ployed il ilher spethog the maton care-eetice and cirier
Freer stilt areinterrtstot Una one isa iting eect upor the
ater.

"Anew cicit ie deecriba! in which thee two import churasertes
ace ledepandert of ears orker Owing 22 this independents an tn oer
rcit cednemen‘s he esatuletioa capabilie are unrestricted wih lowe
Ulstrtion aver an exceadingy wide re

‘A balinco cles welleteroperaling al onecighth the radiated fre
quency is modulated Uy balanced reactanes contol tubes and ogatve
Tedbock is wend to mitiae emplitae meaiation and harmon distor
tion. A satin of frauoney anise employe ager with crystal
Controlled suitor ad eyaedroness eto? in sucha ntener ns to control
‘eshanieally tho mean fraeency of The modulated wave with the sare
Sahiiy as Gat of the erytubrontrodedoecilator. The care, or esa,
Frencrcy abit is that ofa ingle ery ntl secon and is
incependent of any nlier cout aniatons. cael Teequaney stats
(1 O02 per cent b woil’e without the ate of temseriereconeaLeld

ais oF eppamtus,

Newtro Stas of Oie Best Alyn? F.C. Nes, H. G. Bowes and
J. Dewsee, Neutron tryanision meseureeats are used to ecody
ide in Fe-Miallya, ‘The diflernce: in neutron teausmission between
Fully annealed quenced alloys we potted aginst the nil content
displays broad poukarouel Nie and fle co vasishingly small valnex
Sear 4 stale percent Nao! pute Ni The higher the degeer of order
the greater the nestten trinsmieion. The eubtitution of 2. atomic
pet cant Mo op 4.1 aromie per vant Cx for Fein tbe annealed 18 atomic
fer oon FeNi lay ested a leone in the neuter tanstisson, relative
fo the anicled 8 etomc er ea FEN alloy of 18.6 and 21.2 per ret,
espestvels. Uh el oth of an amoral! Birary 79 alse per seat
Niall tretmes saa to poodce disorder, ve ie to a ecreate at
206 pet cent in twuleas tnterison. ese reaula domonsece Cat
euitonteciiguas serve ae 2 agen teal stil cee in Fe? alloy, aod
Suggest tha they ean le extended to story other soli lace phoramena