Abstract: This invention constitutes a set of devices that provides an approach to music instruction that is devoted particularly to demonstrating fundamental tonal properties of the musical octave. Novel shapes and sizes of both physical and virtual models are employed to represent these tonal properties in a vivid and graphical manner. Whether physical or virtual, each member of a given set of models is a portrayal that represents a particular amount of minimum tonal intervals of the musical octave. Physical models are in the form of blocks shaped to represent particular tonal intervals. Virtual models are images representing tonal intervals that are stored in computer memory and displayed on a computer screen. Assigned musical tones can be associated with individual displayed virtual images.

Abstract: The present invention particularly addresses the issue of safely for motorcycles with respect to enhanced visual awareness on the part of automobile drivers by making the motorcycles significantly more conspicuous. Important features of the invention include flashlamps fired randomly at frequencies selected to be particularly attractive to drivers, a geometrical array for the flashlamps that defines the vehicle as a motorcycle, a forward illumination pattern that provides visibility where it is most needed, and a means for preventing operation during nighttime conditions.

Abstract: This invention is a compact and portable apparatus directed toward measuring the coefficients of both static and sliding friction or slip resistance occurring between two surfaces. Means are provided for determining and recording data to establish such friction accurately, repeatably, and in a form suitable for computer entry and data processing. Improvement over the prior art is provided with respect to mechanical configuration, ease of use, plus the acquisition and analysis of data, particularly for conditions involving wet or damp surfaces. A method is disclosed for essentially automatic determination of coefficient of friction.