Demonstrates a variety of electrical phenomena to help explain atomic structure. Topics include: establishing electrical properties, electrochemistry, and electrostatic charges. Recommends demonstration equipment needed and an explanation of each. (MVL)

The role of spectral color slides in laboratory situations is discussed, then experiments for secondary school students concerning color and wave length, evidence of quantization, and the ionization energy of the hydrogen atom are outlined. Teaching guidelines for creating a set of spectrograms and photographic specifications are provided. (DT)

An experiment assigned in a role-playing'' modern physics lab for juniors who are challenged to obtain accurate measurement with suboptimum apparatus through correct analysis. They also investigate the influence of systematic errors using a small computer. (DF)

This experiment leads to a value for the ground-state hyperfine splitting of Cs 133, the accepted standard of frequency, to one percent accuracy. (Author/GS)

Describes an experiment suited for use in an advanced laboratory course in particle physics. The magnetic moment of cosmic ray muons which have some polarization is determined with an error of about five percent. (Author/GS)

Data reveal that the absorption spectra of alkali metals can be analyzed using a modified laboratory procedure. ( CP)

This teacher's guide and student guide unit contains supplemental readings, activities, and methods adapted for secondary students who have disabilities and other students with diverse learning needs. The materials are designed to help these students succeed in regular education content courses and include simplified text and smaller units of…