ISSN:0031-921X    

DOI:10.1119/1.879972

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

Over the holiday, it occurred to me to list the great curriculum reforms of the last few years. One of our faithful readers had questioned my earlier assertion that every such reform had it predecessor. How aboutCritical Thinking,Hands-On Learning,standards,Constructivism, andPeer Group Instruction?

ISSN:0031-921X    

DOI:10.1119/1.879968

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

To assist student understanding, appreciation, and interest in the electricity and magnetism portion of introductory physics, we discuss the use of order-of-magnitude estimation of everyday phenomena, and apply it to the dielectric of breakdown of air.

ISSN:0031-921X    

DOI:10.1119/1.879973

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

When performing a demonstration showing Archimedes’ principle, or conducting a laboratory exercise on density or specific gravity, an electronic balance can be a more difficult instrument to use than the older, mechanical balances.

ISSN:0031-921X    

DOI:10.1119/1.879946

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

To reduce maintenance costs, continuous railroad tracks are replacing the 39-ft lengths. Expansion gaps are being eliminated by using a Thermit welding process.

ISSN:0031-921X    

DOI:10.1119/1.879947

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

The classic introductory physics laboratory experiment used to study the static equilibrium of a rigid body can easily be modified to allow students to actually feel forces that produce torques acting on the body. This sensory experience helps students develop an intuitive understanding of torque.

ISSN:0031-921X    

DOI:10.1119/1.879948

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

Simple, yet robust and reliable demonstrations to show that the velocity of sound in gases varies with temperature and inversely with the molecular weight of the gas are described.

ISSN:0031-921X    

DOI:10.1119/1.879969

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

The central elastic and inelastic collisions have been analyzed in general vector form. The proposed analysis results in equations, which have simple physical interpretation and can be easily applied to different special cases. The mathematical basis needed for the analysis includes only vector addition and dot-product of vectors. It allows teachers to introduce proposed approach to collisions already in trigonometry-based physic courses.

ISSN:0031-921X    

DOI:10.1119/1.879949

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

A simple game is presented to illustrate the application of Newton’s laws of motion. This game has been used for several years in teaching introductory physics at Shippensburg University.

ISSN:0031-921X    

DOI:10.1119/1.879950

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP

摘要:

Sources and prices of good quality plastic color filters are given, as is information about using them for additive and subtractive color mixing.

ISSN:0031-921X    

DOI:10.1119/1.879951

出版商:American Association of Physics Teachers    

年代:1998

数据来源: AIP