- Email: [email protected]
World's power congress, berlin, 1930
Oct., 1929.]
CURRENT TOPICS.
569
result in increased cloud and precipitation, and even in the apparent paradox of an ice age.” Because the main part of the radiation emitted in combustion is in the infra-red much work must be done here to elucidate what takes place in flame and in explosion. “Like the X-rays, the infra-red deals with the structure of the molecule, but while X-rays reveal the molecule in its static condition and are especially applicable to solids, infra-red spectra reveal the dynamic characteristics of the molecule in gases, liquids, and to a restricted degree in solids. In the future it will undoubtedly be used to a greater extent in the determination of the nature of chemical linkages and generally for the solution of problems of chemical The molecule as a dynamical entity has been comconstitution. paratively neglected.” G. F. S.
World’s Power Congress, Berlin, 1930. The second World Power Conference will be held in Berlin, June 16 to 23, 1930. The subjects for discussion will include the development of power and power utilization, new methods of the application of power, efficient utilization of generating plants and distribution networks, the storage of power, advantageous interconnection of different power producing plants, large central plants and large power distributing systems, propaganda and tariff systems, administration and legislation, safety measures, standardization, statistics, and education. Papers submitted to the Conference will be printed and distributed in order that those attending the meetings may take part in the discussions. In addition to the general sessions there will be a number of visits to electrical and gas plants in Bei-lin, to the works in central Germany, especially those using brown coal, to the plants in the Rhineland, Westphalia, East Prussia and Silesia and to the German Museum in Munich, the water power and steam plants in Bavaria and Baden. Subcommittees composed of about three hundred German specialists are engaged in preparing the programmes for the meetings and visits. Headquarters of the Conference are in the house of the Verein Deutscher Ingenieure, Berlin. R. When the General Board of the National Physical Laboratory made its annual visitation to the laboratory at Teddington, England, many interesting exhibits and experiments were displayed. Apparatus was shown for measuring the heat that becomes latent in wire-drawing. The die was situated within a Dewar flask that served as a calorimeter. An alloy of nickel-chromium-iron exhibited
[J. F. I.
CURRENT TOPICS.
had an ultimate breaking stress of 30 tons per sq. in. at 800’ C., and did not break at this temperature when 5 tons per sq. in. were supported by it for 68 days. Sabin’s measurements of the absorption of sound have been greatly refined. His organ pipe for the production of the sound whose decay was to be studied is replaced by a valve oscillator and loud speaker and, instead of the ear of the observer, a microphone, receiving set and reflecting galvanometer register on photographic paper the decrease of the intensity of the sound, with a tuning fork to measure time intervals. X-ray intensity is measured by an apparatus where the rays traverse an ionization chamber and a string galvanometer furnishes the strength of the ionization current. The presence of tangential stresses when a dielectric is subject to a three-phase electric field was demonstrated by mounting a cylinder of paper at the center of a three-field. The field made the cylinder rotate. “In the William Froude Tank a novel method of determining the wind resistance and center of effort of shii, superstructures by measurements in water was demonstrated. The superstructure complete with funnels, masts, derricks, etc., is towed upside down through water at slow speeds.” The resistance in air can be calculated from the resistance measured in water. (Nature, July 6, 1929.1 6. F. S.
THE FRANKLIN
INSTITUTE
OFFICERS FOR 1929 NATHAN
HAYWARD
(HENRY HOWSON SCC?ZtWy
HOWARD
TlVaSU?Xf
ALFRED RIGLING BENJAMIN FRANKLIN WILLIAM F. JACKSON.
Assistant Secretary and Librarian
Controller
MCCLENAHAN
JR.
Board of Xanagers JAMES BARNES GEORGE H. BENZON. CHARLES E. BONINE EDWARD G. BUDD
~~;LTk$u.mcus Timok~ WALTON
F. CLARK CLARK
MORRIS
JR.
L.
CLoTHrER
THOMAS D. COPS CHARLES
DAY
An’rnun W. GOODSP~ED CLARENCE A. HALL GEORGE A. HOADLEY ROBERT W. LESLEY MALCOLM LLOYD, JR. MARSHALL S, MORGAN
CHARLES
PENROSE
JAMES S. ROGERS
GEORGE D. ROSENCARTES E. H. SANBORN HASELTINE SMITH SAMUEL T. WAG~BR
t&2PW~THERILL
CURRENT TOPICS.
569
result in increased cloud and precipitation, and even in the apparent paradox of an ice age.” Because the main part of the radiation emitted in combustion is in the infra-red much work must be done here to elucidate what takes place in flame and in explosion. “Like the X-rays, the infra-red deals with the structure of the molecule, but while X-rays reveal the molecule in its static condition and are especially applicable to solids, infra-red spectra reveal the dynamic characteristics of the molecule in gases, liquids, and to a restricted degree in solids. In the future it will undoubtedly be used to a greater extent in the determination of the nature of chemical linkages and generally for the solution of problems of chemical The molecule as a dynamical entity has been comconstitution. paratively neglected.” G. F. S.
World’s Power Congress, Berlin, 1930. The second World Power Conference will be held in Berlin, June 16 to 23, 1930. The subjects for discussion will include the development of power and power utilization, new methods of the application of power, efficient utilization of generating plants and distribution networks, the storage of power, advantageous interconnection of different power producing plants, large central plants and large power distributing systems, propaganda and tariff systems, administration and legislation, safety measures, standardization, statistics, and education. Papers submitted to the Conference will be printed and distributed in order that those attending the meetings may take part in the discussions. In addition to the general sessions there will be a number of visits to electrical and gas plants in Bei-lin, to the works in central Germany, especially those using brown coal, to the plants in the Rhineland, Westphalia, East Prussia and Silesia and to the German Museum in Munich, the water power and steam plants in Bavaria and Baden. Subcommittees composed of about three hundred German specialists are engaged in preparing the programmes for the meetings and visits. Headquarters of the Conference are in the house of the Verein Deutscher Ingenieure, Berlin. R. When the General Board of the National Physical Laboratory made its annual visitation to the laboratory at Teddington, England, many interesting exhibits and experiments were displayed. Apparatus was shown for measuring the heat that becomes latent in wire-drawing. The die was situated within a Dewar flask that served as a calorimeter. An alloy of nickel-chromium-iron exhibited
[J. F. I.
CURRENT TOPICS.
had an ultimate breaking stress of 30 tons per sq. in. at 800’ C., and did not break at this temperature when 5 tons per sq. in. were supported by it for 68 days. Sabin’s measurements of the absorption of sound have been greatly refined. His organ pipe for the production of the sound whose decay was to be studied is replaced by a valve oscillator and loud speaker and, instead of the ear of the observer, a microphone, receiving set and reflecting galvanometer register on photographic paper the decrease of the intensity of the sound, with a tuning fork to measure time intervals. X-ray intensity is measured by an apparatus where the rays traverse an ionization chamber and a string galvanometer furnishes the strength of the ionization current. The presence of tangential stresses when a dielectric is subject to a three-phase electric field was demonstrated by mounting a cylinder of paper at the center of a three-field. The field made the cylinder rotate. “In the William Froude Tank a novel method of determining the wind resistance and center of effort of shii, superstructures by measurements in water was demonstrated. The superstructure complete with funnels, masts, derricks, etc., is towed upside down through water at slow speeds.” The resistance in air can be calculated from the resistance measured in water. (Nature, July 6, 1929.1 6. F. S.
THE FRANKLIN
INSTITUTE
OFFICERS FOR 1929 NATHAN
HAYWARD
(HENRY HOWSON SCC?ZtWy
HOWARD
TlVaSU?Xf
ALFRED RIGLING BENJAMIN FRANKLIN WILLIAM F. JACKSON.
Assistant Secretary and Librarian
Controller
MCCLENAHAN
JR.
Board of Xanagers JAMES BARNES GEORGE H. BENZON. CHARLES E. BONINE EDWARD G. BUDD
~~;LTk$u.mcus Timok~ WALTON
F. CLARK CLARK
MORRIS
JR.
L.
CLoTHrER
THOMAS D. COPS CHARLES
DAY
An’rnun W. GOODSP~ED CLARENCE A. HALL GEORGE A. HOADLEY ROBERT W. LESLEY MALCOLM LLOYD, JR. MARSHALL S, MORGAN
CHARLES
PENROSE
JAMES S. ROGERS
GEORGE D. ROSENCARTES E. H. SANBORN HASELTINE SMITH SAMUEL T. WAG~BR
t&2PW~THERILL