摘要:

The torque condition for equilibrium can be derived from Newton's first and third laws, the postulate of central forces, and some geometrical considerations. Such a derivation, or adequate statements about its possibility, were not found in 52 elementary textbooks examined. A simple form of this derivation is given.

ISSN:0002-9505    

DOI:10.1119/1.1934035

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

Engineering educators are becoming very interested in solid state physics. A course is described which is designed for seniors and beginning graduate students in both physics and engineering. Some of the difficulties in the choice of textbook and subject matter are pointed out, difficulties due in large part to the lack of background of the students. A selected bibliography, with comments, is given in the appendix.

ISSN:0002-9505    

DOI:10.1119/1.1934036

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

Although the ampere balance is today the primary standardizing device for the measurement of electric current, such balances are not available in the laboratory supply houses. Elaborately designed ampere balances have been made in physics departments with large resources, but the models we have seen elsewhere are satisfactory for demonstration purposes only. This paper describes the construction of a simple balance well suited for quantitative laboratory work as well as classroom demonstration.

ISSN:0002-9505    

DOI:10.1119/1.1934037

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

Formal statements of the objectives of secondary education place major emphasis on the “common needs of youth” and minimize the importance of developing the potential abilities of outstanding students and their preparation for college. Emphasis in the preparation of teachers is on the professional aspects of teaching often at the expense of subject matter, while the school program suffers from a number of “maladies” such as “curriculum dilution,” the philosophy of “no failures,” and an excess of extra-curricular activities.To increase the supply of potential physicists, it is suggested that emphasis be placed on the better preparation of teachers and on securing their continuing tenure on a 12-months basis at salaries comparable to those paid in professions requiring similar ability and preparation. To accomplish these ends, it is suggested that high school science and mathematics teaching be placed under Federal regulations somewhat similar to those which now govern Vocational Agriculture and Home Economics under the Smith-Hughes Law.

ISSN:0002-9505    

DOI:10.1119/1.1934038

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

The effectiveness of the Case-General Electric fellowship program for teachers of secondary school physics has been studied. The impact of the program on the training of scientific and engineering personnel through advanced training of physics teachers is discussed. An indication of the general problems faced by teachers in their respective schools is set down, along with specific examples of improved teaching.The effect of the program is set forth convincingly through the results of a questionnaire sent to former Fellows.The records of Fellow's students who attended Case have been examined. Their performance at Case is quite appreciably above the average, showing that more and better students are being trained for scientific and engineering careers as a result of the GE Science program.

ISSN:0002-9505    

DOI:10.1119/1.1934039

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1934041

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

The formation and work of the AAPT Committee on Scientific Apparatus for Educational Institutions is described. Many suggestions are made for increasing the variety and appeal of apparatus used in teaching physics, with the ultimate objective of increasing student interest in the subject, and of meeting the growing demand for research physicists and physics teachers.

ISSN:0002-9505    

DOI:10.1119/1.1934042

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

There are five major reasons why the physicist should know and be interested in the history of physics: (1) the great physicists have left us in their writings a treasure containing valuable suggestions for future laws, principles, theories, and experiments; (2) it is necessary to know why theories are now, or have been, discarded and are in disrepute: frequently a hostile scientific atmosphere may have been the sole reason why an important theory was rejected in the past; (3) in physics, many historical theories have been revived and applied anew; (4) the original historical arguments given in support of a theory may be invalid; and (5) physicists can often obtain inspiration by studying the lives of great men.

ISSN:0002-9505    

DOI:10.1119/1.1934043

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

An “operational” definition of osmotic pressure is presented and the difference between this definition and the thermodynamic definition of osmotic pressure is pointed out. By the use of a negative pressure osmometer a formula is developed to express the values of “osmotic pressures” when the osmometer membrane is permeable to both solvent and solute. A membrane factorBis introduced to account for the efflux of solute from the osmometer.Bis evaluated in terms of the effective solute diffusion coefficient,D.

ISSN:0002-9505    

DOI:10.1119/1.1934044

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP

摘要:

The course described represents an attempt to lead freshmen not specializing in physics to an understanding of the nature of scientific endeavor which may provide an adequate scientific foundation for twentieth-century citizenship.Holton's admirable general education text was employed to organize the study and define its semihumanistic approach. Equal attention was directed to a tightly integrated core of technical physics and to the interplay between science and the social environment. Technical material was organized about Newton's synthesis in mechanics and Bohr's in atomic structure. For the role of physics in human affairs subject matter was drawn from outside reading in selected historical and philosophical expositions and brought into the course through written papers and symposia. The customary laboratory curriculum was modified to provide a gradual increase in pace and difficulty throughout the semester.Departures from conventional techniques are described in detail and their merits and shortcomings evaluated. Most of the innovations appear to have been successful in some degree.

ISSN:0002-9505    

DOI:10.1119/1.1934045

出版商:American Association of Physics Teachers    

年代:1955

数据来源: AIP