Barrier Scattering model
The EJS Barrier Scattering model shows a quantum mechanical experiment in which an incident wave (particle) traveling from the left is transmitted and reflected from a potential step at x=0. Although the analytic solution to this standard problem is well known, its visualization shows how the incident and reflected waves form an interference pattern and how the incident wave penetrates the classically forbidden region when its energy is less than the barrier height height V0
Rocket Car on an Inclined Plane Model
The EJS Rocket Car on an Inclined Plane model displays a car on an inclined plane. When the car reaches the bottom of the incline, it can be set to bounce (elastic collision) with the stop attached to the bottom of the incline. The car consists of the car body, two rotating front wheels, and two rotating rear wheels. The incline angle (in radians) can be changed via a textbox and the rocket’s thrust can be changed via a slider. In addition the car can be dragged to its initial position. A
Ejs TPT Ladder Demonstration Model
The EJS TPT Ladder Demonstration model displays the statics and dynamics of a ladder leaning against a wall. The standard (textbook) statement of this problem assumes that there is no frictional force between the wall and the ladder, but a frictional force between the ground and the ladder. In the simulation you can set the initial lean angle and the coefficients of static and kinetic friction between the floor and the ladder.
Fossil Fuels: Coal
This lesson provides an introduction to the use of coal as an energy source. Topics include the history of coal usage, applications of coal as an energy source, and major suppliers of coal (the United States).
Hey, Mr. Producer!
It's not that uncommon for secondary school students to study the ups and downs of the stock market, but in this lesson, students will examine the economic roller coaster involved in the production of a Broadway musical. As an introduction to the lesson, students will read a series of online articles to investigate the similarities and differences between nonprofit theater production and Broadway, or commercial, theater production. They will view excerpts from the PBS series BROADWAY: THE AMERIC
Star Library: Regression - Residuals - Why?
As teachers of statistics, we know that residual plots and other diagnostics are important to deciding whether or not linear regression is appropriate for a set of data. Despite talking with our students about this, many students might believe that if the correlation coefficient is strong enough, these diagnostic checks are not important. The data set included in this activity was created to lure students into a situation that looks on the surface to be appropriate for the use of linear regressi
Statistical Tools: Binomial Confidence Interval
This page calculates the confidence interval for a binomial probability.
Vanished in the Fog: Ethel Reed, the Beautiful Poster Lady
William Peterson discusses Ethel Reed.
Speaker Biography: William S. Peterson was, until his retirement in 2004, professor of English at the University of Maryland. He is the author or editor of fourteen books (several of them about William Morris and his Kelmscott Press) and is a freelance book designer. He has also edited two academic journals, Browning Institute Studies and Papers of the Bibliographical Society of America. Currently he and his wife Sylvia are compiling a census of all known
Where Are the MDGs?
By investigating the coverage of the Millennium Development Goals in the media, students learn about both the local and global presence of development issues, as well as gain an introduction to the way the media represents these issues in different parts of the world.
NeMO Curriculum
The NeMO curriculum is based on real events and real data: the 1998 eruption at Axial Volcano and the rumbleometer instrument that was stuck in the new lava flow. The activities for the classroom are modeled on how scientists actually investigated this event. This curriculum is intended for middle and high school students in earth science and marine science classes. It is composed of four parts (which are each a separate file):
Part 1 - Introduction and Background Information
Part 2 - Classroom
General NOAA Operational Modeling Environment)
GNOME (General NOAA Operational Modeling Environment) is the oil spill trajectory model used by OR&R Emergency Response Division (ERD) responders during an oil spill. ERD trajectory modelers use GNOME in Diagnostic Mode to set up custom scenarios quickly. In Standard Mode, anyone can use GNOME (with a Location File) to:
- predict how wind, currents, and other processes might move and spread oil spilled on the water.
- learn how predicted oil trajectories are affected by inexactness ("uncertai
Sustaining enterprise education
This presentation examines the impact of enterprise education on the career aspiration, decisions and intentions of HE students
IPL: Latin American Liberation Theology and its Ongoing Legacy
Professor David Tombs holds the Howard Paterson Chair in Theology and Public Issues and is Director of the Centre for Theology and Public Issues at the University of Otago. His Inaugural Professorial Lecture discusses Latin American liberation theology and its ongoing legacy. 8 September 2015
2.3.1 Perfect diamagnetism Diamagnetism is due to currents induced in atomic orbitals by an applied magnetic field. The induced currents produce a magnetisation within the diamagnetic material that opposes the applied field, and the magnetisation disappears when the applied field is removed. However, this effect is very small: the magnetisation generally reduces the applied field by less than one part in 105 within the material. In diamagnetic material, B = μμ0H
AlgTop20: The geometry of surfaces
This lecture relates the two dimensional surfaces we have just classified with the three classical geometries- Euclidean, spherical and hyperbolic. Our approach to these geometries is non-standard (the usual formulations are in fact deeply flawed) and we concentrate on isometries, avoiding distance and angle formulations. In particular we introduce hyperbolic geometry via inversions in circles---the Beltrami Poincare disk model.
This is the 20th lecture in this beginner's course on Algebraic To
Artificial Intelligence, Fall 2008
An introduction to the main techniques of Artifical Intelligence: state-space search methods, semantic networks, theorem-proving and production rule systems. Important applications of these techniques are presented. Students are expected to write programs exemplifying some of techniques taught, using the LISP lanuage.
Homework for Resonant Tunneling Diodes
This homework assignment was created for EE 218 "Introduction to Nanoelectronics and Nanotechnology" (Stanford University). It includes a couple of simple "warm up" exercises and two design problems, intended to teach students the electronic properties of resonant tunneling diodes and carbon nanotubes, and how they can be used as components in real circuits. Students do their work via the Resonant Tunneling Diode Simulator and the MSL Simulator, which are both available online through NanoHub.or
What's Happening to Your Body
There are three lessons in this group. The first two focus on the biological and developmental changes that take place during adolescence and addresses the nutritional, physical exercise, and mental exercise needs of adolescents during this period. During the third lesson, a health professional with a background in adolescent health needs leads the class in a group discussion. (Note: these lessons are intended to serve as an introduction to a more in-depth nutrition unit by helping students unde
Object of History
The Object of History is a cooperative project between the Smithsonian’s National Museum of American History and George Mason University’s Center for History and New Media. The project was conceived of in an effort to find a low cost way for students and teacher of U.S. History to have access to the museum’s collections and the expertise of the curators. As a result the materials on the site are designed to improve students’ content knowledge of standard topics in U.S. History and to imp
Preventing Drug Use among Children and Adolescents: A Research-Based Guide for Parents, Educators, a
This brochure presents the updated prevention principles, an overview of program planning, and critical first steps for those learning about prevention. Thus, this shortened edition can serve as an introduction to research-based prevention for those new to the field of drug abuse prevention. Selected resources and references are also provided
