This file includes the lab manual write-up for the Au nanosphere and nanorod photoabsorption and scattering Lab experiment for the 2nd year Experimental Contemporary Physics Lab Course. In addition, several handouts are provided along with some additional information for instructors. This work was supported in part by by NSF Awards: ECCS #0701703, DMR #0707740 & DMR #1105121. The experiment can readily be upgraded to an advanced lab by giving more responsibility to the students for lab setup (give them an optical breadboard and parts) and by asking for more in-depth analysis and questions which require more knowledge and experimental skills to answer.

The EJS 2D Ising model displays a lattice of spins. You can change the lattice size, temperature, and external magnetic field. You can modify this simulation if you have Ejs installed by right-clicking within the plot and selecting “Open Ejs Model” from the pop-up menu item. The 2D-Ising model was created using the Easy Java Simulations (Ejs) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_stp_Ising2D.jar file will run the program if Java is installed. Ejs is a part of the Open Source Physics Project and is designed to make it easier to access, modify, and generate computer models. Additional Ejs models are available. They can be found by searching ComPADRE for Open Source Physics, OSP, or Ejs.

The 3-D Hydrogen Atom Probability Densitites model simulates the probability density of the first few (n = 1, 2, and 3, and associated l and m values) energy eigenstates for the Hydrogen atom (the Coulomb potential). The main window shows the energy level diagram for the solutions to the Coulomb potential in three dimensions. States may be selected either by using the dropdown menu item or by using the energy level diagram and clicking a dark green level, with specific n, l, and m values) which will turn bright green and change the state shown in the 3d visualization window. The probability is shown with a 3d cloud, with higher probability shown as a darker sphere. The simulation uses either simple 3D or Java 3D (if installed) to render the view the probability densities. If Java 3D is not installed, the simulation defaults to simple 3D using Java. The 3-D Hydrogen Atom Probability Densitites model was created using the Easy Java Simulations (EJS) modeling tool. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the ejs_qm_hydrogen3d.jar file will run the program if Java is installed.

These zipped documents from MatEd provide information on designing a course on 3 Dimensional Digital Laser Scanning Fundamentals. At the end of the course, students will be able to identify applications for 3 dimensional digital laser scanning, operate a NextEngine brand 3 dimensional digital laser scanner, and have proposed a project to reinforce these concepts. The documents include a draft syllabus, contact information for the author of the course, a sample new course proposal form, and a course outline.

In 1953, Gottfried Moellenstedt invented the electron biprism, more or less by accident, with the serendipity characteristic to him: Aiming at dark-field imaging in an electron microscope, he stretched a thin tungsten wire across the objective aperture to block off the zero beam. However, instead of a dark field image, because of inadvertent charging of the wire under the beam, he found two images of the ZnO-needles serving as an object. Instead of trying the dark field imaging over and over again, he asked what the effect would be if the obtained two images were superimposed. Is coherence given? Moellenstedt, educated by Walther Kossel in diffraction of electron waves, had a vision: Together with his PhD-student Heinrich Dueker, he developed the electron biprism, consisting of a 1 micron m thin wire deliberately chargeable by means of a voltage source, as a beam splitter for coherent superposition of the electron waves passing the filament on the right and on the left. In 1955 they published the first results showing biprism interference fringes [G. Moellenstedt and H. Dueker, Naturwiss. 42, 41 (1955)], which, since then, gave access to the understanding of electron waves and their use for analysis of object structures up to atomic dimensions. Target Audience: 2-4 Year College Faculty/Administrators

The main goal is to understand some basic laser theory and the method of creating a 532 nm (green) laser emission from an 808 nm (IR) laser. In the process you will learn the basics about laser diodes, pumping a gain medium, the purpose of special optical coatings, second harmonic generation, and the electronics / measurement tools for optical characterization. This lab can be constructed for under $1K with some creativity. Having introduced the lab already to students, they found it both interesting and fun to go through. Presented at the 2013 AAPT Summer Meeting in Portland, Oregon. W36: Advanced Labs Workshop

The American Association of Physics Teachers publishes a wide range of curriculum materials, books, instructor manuals, and other materials that can be used for teaching introductory physics.

This site presents graphic plots of solar wind and magnetic field data from the Advanced Composition Explorer (ACE) spacecraft.

Solves for inductor and capacitor values for first, second, third and fourth order passive crossover systems for two way speaker systems. Includes Butterworth, Linkwitz-Riley, Bessel, Chebychev, Legendre, Gaussian and Linear-phase type calculations.

Online calculator for solving various interest related equations. Includes computations for compound interest, simple interest, annual percentage rate(APR) and regular deposits.

The electrical relationships between resistance (R), current (I), power (P) and voltage (E) is defined by Ohm's Law. One ohm is defined as the resistance which allow the current of one ampere under a potential difference of 1 volt.

This Astronomy Picture of the Day depicts the Himalayan mountain range in Nepal. The image was taken from the International Space Station. Links provide background information about Skylab, the Himalayas, and plate tectonics.

This curriculum guide, from the American Radio Relay League, is "a resource that will help you do what you do best...teach, and teach in a refreshing, captivating way that will bring your students into the world of wireless technology, a journey that will enrich their lives, and our lives." From this site, visitors can either download the basic document or browse the various units and activities listed here. Topics covered include Ohm's Law, Oscillators, Wireless Technology in Robotics, and an Introduction to Ham Radio, among many others.

The American Society for Microbiology is a membership organization whose goal is to pursue scientific knowledge and disseminate results of microbiological research. These goals may be achieved through supporting educational programs or issuing publications such as the Journal of Clinical Microbiology.

ATE Central is a freely available online portal and collection of materials and services that highlight the work of the Advanced Technological Education (ATE) projects and centers. These National Science Foundation funded initiatives work with educators from two-year colleges to develop and implement ideas for improving the skills of technicians and the educators who teach them. ATE Central is designed to help educators, students, and the general public to learn about, and use materials from, the entire depth and breadth of the Advanced Technological Education program.ATE Central helps direct users to a full range of high-impact ATE resources available online, including curricula, learning objects, and podcasts. The portal aggregates information about the materials developed by ATE centers and projects, and organizes them using subject taxonomies, context appropriate keywords, and other digital cataloging techniques.