STATEMENT OF PURPOSEThis newspaper is published by Pola-

rad Electronics Corporation, Long IslandCity, New York, in tl.re interests of intra-company personnel relations. This publi-cation is distributed gratis to all regularernployees of said corporation. A1l mate-rial has been cleared by the residenrSecurity O1-6cer and does not violate anysecurity regulations of the United States.

ADYISORY I]OARD(. hdrnan U. Rosr:nfirl,l

\..\lllttC, ChekorL. Cloth

hDt l'olilAL llOARl)II. Rosenfield

I1. l'r,l1,LrkL Slrirhli. Srul

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\rt\!ork ................Photograt'h\ .........l'ro,lrction ............

{ JR E DI'I'S:. tllrrrc.R {dlcr

''. ... H. Rcin;sh

a pair of tickets to a Broadway prduc-tion of their choosing.

The editorial and advisory boards ofthe paper thank all who participated inrhe contest.

TETTERS TO THE EDITORFrom qn erstwhile Troinee

I have been a member of the March,i960 class of the Polarad training pro-gram. xn orientxrion course for new engi-.reers, no* in progress under the directionof A. E. Martin. The airn is to providefor the new engineer an insigl.rt into theorganization of Polarnd as well as an

awareness of the considerations enteringinto the design of Poiarad equiPment.

Speakers are invited to lectllre on those

topics with which they are most familiar.Not all the topics were of immediate in-terest to me. These were the most non-rechnicai ones: contracts, Publications, ex-ecutive organization. Being interested inthe direct engineering field, I found themosr useful lectures to be on components:rnd design. The lectures xre not quanti-tative but they are qualirative. The pro-gram does not give the know-how to theengineer for his technical work but itdois give him an awareness of what he

must do to get it and whom he must see

to find his information.All in ali, this is, in mY estimation, a

good program to be continued'Eli Berlinger

THE IIBRARY CORNERIn checking out the neq' Periodicals

shelf iist. it was noted thar the libraryreceives :rn ()\'er-abLlndant :trpply,,f as-

sorted copies. These are carefully screened

and the excess discarded.If those who may wish to obtain anY

specific periodicals before discard willsind name, department and preference,such material will be set aside for themrvhenever Possible'

L. D. ctoth

WANTEDPOLARAD ENGINEERS to pre-

senr a paper at the 1961 I.R.E.INTERNATIONAL CONVEN.TION to win a 2-year paid mem-bership in the Institute of RadioEngineers!

Deadline for submission is Octo-ber 1960.

For further inforrnation see yourdepartment head or telePhoneGeorge Kaufer (x-224) .

NEW AUTHOR CREDITSIn the belief that many of the younger

n-ren ar Polarad may have interesting andinformative technical material which theywould like to submit for publication,George Kaufer of the Engineering De-partment has issued the "call to theiabiet." Eariy response has already beennoted in that both Myron Greenbaumancl Irwin Share of Engineering have be-come author-aspirants. Technical articlestl-rey have written were submitted throughour Publications Departn-rent to Electron-ics Magazine and Proceedings of theIRE respectively.

The ranks are open to many more"

POLARAD E.Q.S. HEAD TO TECIUREStanley Seifer, n-ranager Engineering

Quality Surveillance, will give a lecturear the American Management Associa-rion's summer headquarters, Colgate Uni-versity, on July 29, L960 for a seminarof Quality Control managers. The subjectof his lecture will be: Reliability and

Qualiry Assurance and its relationship to

Quaiity Cont:ol.The lecture prograrn is headed bY

Dr. J. M. Juran.

SAILING TO WINDWARD

\7hile mosr people appreciare thebeauty and grace of a sailboat, relativeiyfew understand how the boat is able tomove in directions other than that of thewind. Here as in the case of the iceberg,the mosr imponant parr of the stciry ishiddea underwater.

Every sailboat possesses some form ofprojecting keel (fig. 1) be it a center-board, daggerboard, fixed keel, the cwinkeels of a catamaran, or the lee-boardsof a sailing canoe. Each of these typesis a keel: an ur{derwater fn, broad andthin, so as to allow the boat to slip for-ward through the water with minimumresistance, but greatly resisting any side-ways motion (leeward slip). \Tithoutrhis keel, the sail would make the boatgo {aster, but only in the wind's direc-tion: with it, the power of the wind inthe sail can be harnessed to carry theboat in any direction.

To see how this is possible, the prob-lem may be analyzed with the aid of sim-ple force vectors (frg.2). \7e shall sailour .boat at sorne angle G to thewind's direction. and set the saii outsome angle Q fto- the centerline ofthe boat, Q bei"g smaller than 0 Nowthe wind will press against each sectionof the sail with a force F, which we shaliresolve into normal and tangential com-ponents to the sail's surface. The tangen-tial component has no sail to react againstirnd rnay be neglected, leaving us withIra, perpendicuiar to the sail, as the onlyeffective force.

The Harry JalJe Sunshi.toe Fund, prerentr portrait ot' the late Harry lalJeto Dr, D. L. Jafre at an insl.allatian clinner.