Back Matter Source: The Scientific Monthly, Vol. 60, No. 6 (Jun., 1945), pp. ix-xii Published by: American Association for the Advancement of Science Stable URL: http://www.jstor.org/stable/18441 . Accessed: 02/05/2014 07:10 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve and extend access to The Scientific Monthly. http://www.jstor.org This content downloaded from 130.132.123.28 on Fri, 2 May 2014 07:10:09 AM All use subject to JSTOR Terms and Conditions
Transcript
Back MatterSource: The Scientific Monthly, Vol. 60, No. 6 (Jun., 1945), pp. ix-xiiPublished by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/18441 .
Accessed: 02/05/2014 07:10
Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp
.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].
.
American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve andextend access to The Scientific Monthly.
http://www.jstor.org
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the choice of a film for photographing cathode ray traces depends on the color of the light from the
screen, the persistence time, and whether the trace is tran- sient or stationary.
The Kodak Research Laboratories have recently completed tests of all Kodak materials under typical con- ditions of use of cathode ray tubes. Materials for a specific use can be selected on the basis of the data in the table shown below. Further details are given in a revised pam- phlet on this subject. Copies are obtainable on request.
RELATIVE SPEEDS OF KODAK MATERIALS FOR CATHODE RAY PHOTOGRAPHY
War Loans N THE 7th War Loan, you're wounded. Wounded men are ar- being asked to lend 7 billion riving in this country at the rate
dollars-4 billion in E Bonds of over 30,000 a month. The cost alonle. of caring for these men at the
That's the biggest quota for battle fronts, transporting them individuals to date. home, and rehabilitating them
Maybe you've wondered why, when they get here, is mounting when we've apparently got the daily. Nazis pretty well cleaned uip, No-this war isn't getting any Uncle Sam asks you to lend more cheaper. And won't for some time. money than ever before. . inta o
If you havc, here are some of This year-2 Instead of 3 the answers: We need as much War Bond
This wa isn't etting money this year as we did last. This war isn't getting L"' fi'/, any cheaper But there will be oiily 2 War any cheaper Loans this year-instead of the
No matter what happens to 3 we had in 1944. Germany-or when-the cost of Each of us, therefore, must lend the war won't decrease this year. as much in two chunks this year
We're building up a whole new as we did last year in three. That's air force of jet-propelled planes another reason why your quota and bigger bombers. in the 7tlh is bigger than before.
We're now building-even The 7th War Loan- is a chal- with announced reduietions- lenge to every American. The enough new ships to make a fair- goal for individuals is the lighest sized navy. for any war loan to date. The
At the time this is written, our same goes for the E Bond goal. casualties are nearing the million Find your personal quota-and mark in dead, missinig, and make it!
MIGHTY
* s At O(/T FOR Tl Mf6/iTY 7t MK4?AR ZO(AN
American Association for the Advancement of Science Smithsonian Institution Building
Washington 25, D. C.
This is an official U. S. Treasury advertisement-prepared under auspices of Treasury Department and War Advertising Council
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Research Foundation, Chicago, sum up the performance of their Micromax Re- corde-r in just one word-"trustworthy." A Micromax Recorder, with small ther- mocouples inserted right in the plasma jars, meets all the requirements this in- stitution sets for measuring and record- .Ing the freezing and dry temperatures of blood plasma. The recorder is located near the two desiccators, so that the tech- nician in charge of these machines can Ieas s plasma temperatures. If temperatures vary from the predeter- mined rate, the instrument operates auto- matic shut-off and alarm contacts.
MVicromax Recorders combine high pre- cision and delicate workmanship with rugged, machine-like construction. Me-a- surements are made by the null-balance -electrical method, working against the recorder's own standard of accuracy-a standard cell. Micromax sensitivity is that of a good pointer-type galvanom- ~eter; its accuracy that of high-grade elec- trical and mechanical components-its dependability that of a highly complete automatic machine.
There is a Micromax Recorder for most any ned you ay hav-tempeature, Micromax Recorder at the Michael Reese Research Founda-
pH, cneduciiyo f liqids oaeteprgastanaly tion in Chicago gives a true temperature picture of hlood sis. When inquiring about Micromax,) if pam ihndscao 2 you willI be as specific as possible, we can usually send you a specific recommenda- tion. dM e ends o e
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i . s ., ss s a B B - B- -as t a B B B B a- g B B BB~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~X
BETWEEN telephone offices in New York and Philadelphia once stretched a strange sort of laboratory. Most of the way it was underground; engineers made their measurements sometimes in manholes. It w7as a lead-sheathed cable contain- ing two "coaxials"- each of them a 7ire sup- ported in the center of a flexible copper tube the size of a lead pencil.
Theory had convinced Bell Laboratory engi- neers that a coaxial could carry many more tele- phone talks than a full-sized voice frequency telephone cable; that it could carry adequately a television program. Experimental lengths were tested; terminal apparatus was designed and tried out. Finally, a full-sized trial was made with a
system designed for 480 conversations. It was successful; in one demonstration people talked over a 3800-mile circuit looped back and forth. Now the cable is carrying some of the wartime flood of telephone calls between the two cities.
This cable made television history also: through it in 1940 were brought spot news pictures of a political convention in Philadelphia to be broadcast from New York. Bell System contributions to television, which began with transmission from Washington to New York in 1927, have been laid aside for war work. When peace returns, a notable expansion of coaxial circuits is planned for both telephone and tele- vision in our Bell System work.
BELL TELEPHONE LABORATORIES Exploring and inventing, devising and perfecting for our Armed Forces at war and for confinued improvements and economies in telephone service.
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An international society for the advance- ment of economic theory in its relation to statistics and mathematics.
The Econometric Society was founded in 1930 and now has over 700 members in 40 countries. Its main object is to promote studies that aim at a unificatipn of the theoretical-quantitative and the empirical- quantitative approach to economic problems and that are penetrated by constructive and rigorous thinking similar to that which has come to dominate in the natural sciences. The Society normally holds one or more meet- ings each year for the presentation and dis- cussion of papers.
Econometrica, the quarterly journal of the Society, publishes reports of meetings and original papers in the field of quantitative economics. The subscription price is $7.00 per year to non-members.
Membership dues are $6.00 per year, in- cluding subscription to Econometrica.
Subscriptions to Econometrica and in- quiries about the work of the Society and the procedure in applying for membership should be addressed to ALFRED COWLES, Sec- retary and Treasurer, The Econometric So- ciety, The University of Chicago, Chicago 37, Illinois.
AMERICAN DAIRY SCIENCE ASSOCIATION The American Dairy Science Association
was organized in 1906 to stimulate scientific research in all phases of interest to the dairy industry and to dairy science, to improve methods of dairy instruction and extension work, to cooperate in educational develop- ments in advancing the general welfare of the dairy industry, and to make available through the JOURNAL OF DAIRY SCI- ENCE the results of the latest scientific research pertaining to these fields.
Subscriptions are $6 per year. A person is eligible for membership when he is filling a position of responsibility connected with the dairy industry or having an interest in the dairy industry who has had college train- ing in technical science. 'Affiliation fee for new members is $5 and membership dues are
$5 per year, which includes subscription. The Journal is published monthly. The Secretary is R. B. STOLTZ Ohio State Uni- versity, Columbus 10, Ohio.
AMERICAN METEOROLOGICAL
SOCIETY
The objects are the development and dissemination of knowledge of meteorology in all its phases and applications, and the advancement of its professional ideals. Mem- bership is open to any persons whose interest or activity in mete- orology would make them desirable members, and dues are $3.50. Pro- fessional Membership is open to those whose training and experi- ence in meteorology meet the So- ciety 's standards for the profes- sional level, and dues are $10. Corporation membership dues are $100.
The Bulletin. is published 10 times a year; it is sent to all mem- bers and its subscription price to others is $3.50. Its some 40 pages per issue contain articles of general interest, reviews, notes, announce- ments, and classified abstracts of current meteorological literature.
The Journal of Meteorology is a quarterly devoted to the publica- tion of research; it is sent to all Professional Members, its subserip- tion price is $6 ($4 to members).
The Society meets twice or more times each year and its local branches weekly to monthly.
Complete information about the Society may be had addressing the Secretary:
PROF. C.
Blue I
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RCA radiophoto transmits pictures scores-such as the new "Trio" by halfway around the world and prints Shostakovich-are sent by faster, 4"SL@fld@ntoNowYork-7 =utues them -in a matter of minutes! error-proof radiophoto.
And thanks to RCA research, pic- RCA has long been a pioneer in tures now come through the receiver all fields of international communi- (shown above) about as sharp and cations. Progress is constantly main- clear as the originals themselves. tained by scientific research .. . . re-
Through RCA radiophoto, today's search, that is reflected in all RCA "news shot" in Honolulu or Cairo products. can r,make tomorrow morning's front When you buy an RCA radio, or 152WYt@L@flh Zp-4age. any RCA product, you enjoy a spe- Notice the great improvement in
clarity, as well as in sped. Be- Ivertisements, fingerprints, doo- cial pride of ownership in knowing cause of RCA research, radio-- ts and letters are radiophotoed that you possess one of the finest in- photo prints are no longer ACommum -asmany stnrments of its kind that science ablout asrclear Patter. They're
mo usiccal has yet achieved. prints thousands of miles away.
RADIO CORPORATION.of AMWRICA - PIONEERS IN PROCGRfSS
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