Explains the idea that a half-length mirror is sufficient to view the whole length, regardless of distance. (GA)

Discusses a laboratory experiment in isotope production designed to help the students understand some of the concepts in elementary nuclear physics. (GA)

Presents a few illustrations of physics areas such as capacitors, free fall, vectors, and waves, to show that methods of presentation of specific topics, in some physics textbooks, produce in the average student the wrong impression and ignorance of important scientific facts. (GA)

Describes a laboratory demonstration to show how to determine the focal length of a thin glass lens under water. (GA)

Describes a demonstration for measurement of biophysical signals produced by the human body. The signals, after amplification, could provide acoustical feedback through a voltage-controlled oscillator (VCO), or they could be seen either with an oscilloscope or a high speed chart recorder. (GA)

Describes a physics course, Biomechanics, designed for physical education majors, where stroboscopic photography is used to provide student data to calculate average velocities of objects in different sport activities. (GA)

Describes some laboratory apparatus and demonstrations; describes an electronic device to illustrate an octave synthesizer; shows how to get negative changes from an electrophorous; explains a body levers device to clarify the principles of moments and levers; and finally shows how to demonstrate acceleration in simple harmonic motion. (GA)

Deals with the wastes generated in nuclear power plants and the health risks involved as compared to those of wastes generated by coal-fired plants. Concludes that the risks of nuclear power plants are many times smaller than the risks from alternative energy resources. (GA)

Discusses the potential and feasibility of future widespread exploitation of the vast geothermal energy resources, that could greatly reduce the need for other forms of energy resources. (GA)

Gives some tips and other information and explains some basic rules on how to effectively present a paper at an American Association of Physics Teachers (AAPT) meeting. (GA)

Lists several ideas for experiments for the amateur scientist to try or design. The list covers a wide range of topics; sound, mechanics, thermodynamics, fluids, optics, and electrostatics. (GA)

Comments on a news item on rail traffic that is meant to promote conservation of energy. (GA)

Describes the procedure, the circuitry, and the calibration required to convert a voltmeter into a pH meter for use in the physics laboratory. (GA)

Describes the use of sound/slide programs in instruction, how to produce them locally, and the hardware involved. (GA)

Reviews the earthquake phenomenon and its possible relation to ionospheric disturbances. Discusses the basic physical principles involved and the methods upon which instrumentation is being developed for possible use in a tsunami disaster warning system. (GA)