摘要:

This paper describes a laboratory experiment for determining moment of inertia in which the emphasis is on (1) a relatively high degree of accuracy, (2) useful application of several of the important principles of mechanics, and (3) improved instrumentation to attain the desired accuracy and still give time in the laboratory period for the student to explore the details and implications of the experiment.

ISSN:0002-9505    

DOI:10.1119/1.1933005

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

摘要:

The semidiurnal barometric oscillation, with maxima at about 10 A.M. and 10 P.M. local solar time, is interpreted according to current theory as an air-tide. Although the lunar tidal force is 2.2 times more powerful than the solar, and hence lunar tides in the oceans are 2.2 times stronger than the solar, this is not found to be the case in the atmosphere. The observations show a solar semidiurnal atmospheric oscillation about 100 times greater than might be expected, and a very feeble lunar oscillation. The difficulty is resolved with a suggestion by Kelvin. This is the famous “resonance theory,” and illustrates how the effect of a comparatively small tide-generating force might be magnified, if the atmosphere had a period of free oscillation close to 12 solar hours. The linearized equations of atmospheric oscillations are stated, tidal wind fields indicated, and conclusions summarized.

ISSN:0002-9505    

DOI:10.1119/1.1933006

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

摘要:

The American Association of Physics Teachers has made to Professor John Wesley Hornbeck, lately Professor of Physics at Kalamazoo College, the fifteenth of its annual awards for notable contributions to the teaching of physics. Following an address of recommendation by Professor J. W. Buchta, Chairman of the Committee on Awards, the presentation was made by Professor Duane E. Roller, President of the Association, in a ceremony held in McMillan Hall, Columbia University, on February 2, 1951, during the twentieth annual meeting.

ISSN:0002-9505    

DOI:10.1119/1.1933007

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

摘要:

Response of the recipient of the Oersted Medal of the American Association of Physics Teachers at the ceremony of presentation. The teaching of physics in a small liberal arts college is discussed, and the values of a liberal education are stressed.

ISSN:0002-9505    

DOI:10.1119/1.1933008

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

摘要:

A recording millivoltmeter is described which gives a record sufficiently large and distinct so that it can be seen by a large lecture audience. The device is useful for showing lecture room demonstrations in which currents or voltages vary with time and the audience needs a record to help appreciate the significance of the experiment. By means of connections to research apparatus in another part of the building, one may often perform actual experiments in front of a large class.

ISSN:0002-9505    

DOI:10.1119/1.1933009

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

摘要:

This is a discussion of the fundamental ideas behind theCase Historiesprepared under the direction of President Conant for use in a general education course, Natural Science 4, at Harvard University. A limitation upon the results achieved in this program by lack of integration with other fields is pointed out. Integration of natural science with the humanities, social sciences, and biological sciences is established as a goal for general education. Lack of maturity among college students defeats in many cases the attainment of the goal, making necessary a whole-hearted effort to have the interrelations of the various fields constantly stressed in all.

ISSN:0002-9505    

DOI:10.1119/1.1933010

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1933011

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1933012

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1933013

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP

ISSN:0002-9505    

DOI:10.1119/1.1933016

出版商:American Association of Physics Teachers    

年代:1951

数据来源: AIP