Two science questions are answered: (1) How can someone have one brown eye and one blue eye?, and (2) Why are magnets attracted to some metals, but not all metals? It is very rare that a human will have two irises of different colors. This condition, heterochromia, can be a normal variant or the result of an ocular disease. Heterochromia can…

Some naturally occurring minerals possess a permanent magnetization. Certain processes such as sedimentation or kiln-firing can cause the particles in structures made of such materials to align themselves with the direction of Earth's magnetic field at the time. This direction has varied over the last few thousand years in ways that can be traced…

The objective of this paper is to explore the operation of magnet and professional development school (PDS) programs in a real life situation using an ethnographic study of Downtown Elementary School (DES--a pseudonym) that simultaneously operates as a PDS and a magnet school. The author spent almost three years at DES, located in the Southern…

In this article, the author, as a technology director for East Rock Magnet School in New Haven, Connecticut, a federal government test site for laptop learning, shares his secrets to a successful implementation of a wireless laptop program: (1) Build a wireless foundation; (2) Do not choose the cheapest model just because of budget; (3) A sturdy…

The principles of magnetism are a common topic in most introductory physics courses, yet curricular materials exploring the behavior of permanent magnets and magnetic materials are surprisingly rare in the literature. We reviewed the literature to see how magnetism is typically covered in introductory textbooks and curricula. We found that while…

The aim of this paper is to propose a synthetic approach to the transfer matrix method in classical and quantum physics. This method is an efficient tool to deal with complicated physical systems of practical importance in geometrical light or charged particle optics, classical electronics, mechanics, electromagnetics and quantum physics. Teaching…

The physical analysis of a uniformly accelerating point charge provides a rich problem to explore in advanced courses in electrodynamics and relativity since it brings together fundamental concepts in relation to electromagnetic radiation, Einstein's equivalence principle and the inertial mass of field energy in ways that reveal subtleties in each…

Latinos now constitute the largest minority group in the United States and the fastest growing segment of its school-age population. Yet they are the least educated of all major ethnic groups. Poverty, lack of access to high-quality preschool, low levels of parental education attainment, and hypersegregated schools all play a crucial role. The…

Describes the serendipitous discovery of paths left by charged particles in the magnetic deflection unit outside of a cyclotron. Offers suggestions for their occurrence. (CP)

Describes the process of high gradient magnetic separation which gives promise as a method of large scale removal of colloidal impurities including bacteria and viruses. Examples and diagrams are included. (GH)

This monograph was written for the Conference on the New Instructional Materials in Physics, held at the University of Washington in summer, 1965. It is intended for use by college students who are non-physics majors. The approach is phenomenological and macroscopic. The monograph contains three chapters. Chapter 1 discusses Faraday's experiments…

Presents a broad overview of magnet schools in New York State. Describes their effectiveness in various cities, and focuses on Rochester's successful publicity campaign to increase enrollment. Asserts that magnet schools, although more expensive per student than regular schools, enhance student achievement and provide a palatable form of…

Local school boards have traditionally assigned the school that a child is to attend. Only by selecting their neighborhoods have parents exercised their choice of school. In recent years, this tradition has slowly given way to magnet schools, inter-district choice programs, charter schools, voucher programs, and many other forms of choice,…