An effective approach to drawing instruction at the secondary level is through the exploration of unique materials and techniques. Two such approaches involve the use of physics and aesthetics--creations of drawings utilizing photographic processes. Methods of teaching direct light drawing and etched light drawing are presented. (Author/KC)

Describes construction and operation of an inexpensive and portable educational hallway exhibit on color mixing. (JRH)

A procedure for measuring the speed of light using the assumption that the frequency of light remains unchanged as it moves from one medium to another is presented. A laser with a known wavelength and frequency in air was used as a light source. (KR)

Presents an inexpensive class activity to teach elementary students about light reflection off various surfaces. The activity involves aluminum foil, waxed paper, magazine pages, newspapers, overhead transparency film, construction paper, fabric, and a hand lens. A student page includes questions to make students think about reflection. (SM)

Presents the Night Spectra Quest, a pocket-sized chart that identifies in color the spectra of all the common night lights and has an integrally mounted, holographic diffraction grating to look through. (JRH)

Introduces the method of ray tracing to analyze the refraction or reflection of real or virtual images from multiple optical devices. Discusses ray-tracing techniques for locating images using convex and concave lenses or mirrors. (MDH)

An activity in which students compare the sun's brightness with that of a light bulb of known luminosity (in watts) to determine the luminosity of the sun is presented. As an extension, the luminosity value that the student obtains for the sun can also be used to estimate the sun's surface temperature. (KR)

The effect of background color on the perception of color by students is discussed. Explanations on why students only see certain colors when viewing colored marks on a blackboard through different color filters are provided. (KR)

Two different methods of measuring the temperature of an incandescent lamp at various voltage levels are described. By observing the color produced at a particular voltage levels, the lamp's color as a function of temperature can be determined. Needed equipment include a variac, a voltmeter, and an ammeter. (KR)

Presents a lesson that introduces students to polarized light using a problem-solving approach. After illustrating the concept using a slinky and poster board with a vertical slot, students solve the problem of creating a polarized light show using Polya's problem-solving methods. (MDH)

Presents two demonstrations to compare the differences between the screen reproductions of a bulb when using a converging lens and a pinhole and how that reproduction image reaches the observer's eye from multiple vantage points. (MDH)

An approach which is designed to help students better understand the utility of models in understanding and doing physics, specifically in a course in light and color, is described in this paper. Explanations are given and illustrations are provided of an analogue model of waves which assist in the creation of an abstract model to deduce Snell's…

Presents an experimental method for introducing special relativity which utilizes the distinction between Doppler effects for sound and for light. (SL)

Describes a system that demonstrates how a color may be generated and specified in mathematical terms. Illustrates the mixing of primary colors as well as the concepts of saturation, luminance, and illumination. (JRH)

Presents four examples of physics problems that can be solved with a graphing calculator. Problems included deal with motion, harmonic oscillations, sound waves, and blackbody radiation. (JRH)