Pendulum on an Accelerating Train Model
The EJS Pendulum on an Accelerating Train model displays the model of a pendulum on an accelerating train. The problem assumes that the pendulum rod is rigid and massless and of length, L = 2, and the pendulum bob is of mass, m = 1. The initial pendulum angle and the initial velocity of the train can be changed via textboxes, and the acceleration of the train can be changed via a slider.
Lennard-Jones Potential Model
The EJS Lennard-Jones Potential model shows the dynamics of a particle of mass m within this potential. You can drag particle to change its position and you can drag the energy-line to change its total energy. The Lennard-Jones potential function is a reasonably accurate model of interactions between noble gas atoms. The binding energy epsilon is the depth of the potential well and minimum molecular separation are set equal to unity. This simulation uses uses a natural system of units the m
Modeling a Changing World
Modeling a Changing World written by mathematics professor Tim Chartier and his student Nick Dovidio presents curricular material in an OSP Launcher package to motivate the need for numerically solving ordinary differential equations. The package discusses such applications as a mass-spring system and its connection to computer simulation for movies. An interactive model that simulates a two-body gravitational model of the moon and earth allows for exploring the topic of numerical error. Other m
Body With Thruster Model
The Body with Thruster Model shows the motion of a disk with an attached rocket engine. You can drag the engine to change its distance from the center of the disk and you can adjust the thrust of the rocket engine using sliders. The mass of the rocket and its connecting rod are assumed to be negligible. The trajectory of this single-body model is intuitively challenging and difficult to visualize.
Letters From the Diaspora - Writing Letters From the Perspective of a Historic Migrant
In this lesson, students share opinions about the causes of mass migration. They then investigate the causes and effects of an event that led to a mass migration, and write letters from the perspective of a person who might have lived through that period.
Foto: Modernity in Central Europe, 1918-1945
During and directly after World War I, four great empires (Germany, Austro-Hungary, Russia, and the Ottomans) crumbled precipitously, to be replaced by more than one dozen fledgling nation-states. The largely agrarian, in some cases semifeudal, societies of central Europe were thrust nearly overnight into crises of civil war, unemployment, or inflation — and beyond these crises into a world propelled by mass media and consumer economies. Becoming modern was attractive but also anxiety-provokin
NASA CONNECT Better Health from Space to Earth
In NASA CONNECT Better Health From Space to Earth, students will learn about the importance of good nutrition and exercise. They will investigate what we can learn in space about our bodies here on Earth. Students will see how researchers and scientists apply the mathematics concepts of measurement and estimation to study the loss of calcium in bones and the loss of muscle mass while astronauts are living and working in space. Grades 6-8.
Peace Games: Peace Dove
Play a game and find out about a Nobel Prize awarded discovery or work! Several people and organizations have received the Nobel Peace Prize for their efforts concerning nuclear weapons disarmament. Worldwide, the white dove is a symbol for peace. Take on the mission to disarm the world of nuclear weapons! You have eight "Peace Doves" to help you, each able to disarm one of the eight countries possessing nuclear weapons.
The Lymphatic System : Lymph Movement (15:03)
The previous video introduced us to the lymphatic system. This video looks at how lymph moves through the lymphatic system and the body.Lesson 3 in our Lymphatic System series. This is part of our Anatomy and Physiology lecture series.If this video helps you please be sure to LST -like subscribe and tell your friends. Your support help us make more videos. For the complete series please visit http://mrfordsclass.net/Videos in the skeletal system series: -Introduction to the Lymphatic System (15:
Mixed Reception Scenario
This activity is set in a research group that is developing an antivenom for spider bites. In the opening scene, Nelson Pogline, a talented graduate student, dies unexpectedly at a university reception. As a detective, you must use chemistry concepts to determine if this was murder and if so, solve the case. You can interview suspects using Quicktime movies, investigate the crime scene for clues with Quicktime Virtual Reality images, and analyze the evidence from the crime lab. This activity req
Essential Science for Teachers: Physical Science Session 3. Physical Changes and Conservation of Mat
What happens when sugar is dissolved in a glass of water or when a pot of water on the stove boils away? Do things ever really "disappear"? In everyday life, observations that things "disappear" or "appear" seem to contradict one of the fundamental laws of nature: matter can be neither created nor destroyed. In this session, participants learn how the principles of the particle model are consistent with conservation of matter.,The segment shows the interviewer trying to find out the student's id
Essential Science for Teachers: Physical Science
In-depth interviews with children that uncover their ideas about the topic at hand.,In this segment the interviewer uses a model to represent what is happening when substances dissolve in water, as well as a representation of two different solutions. The interviewer then asks for a prediction of what would happen when two clear solutions are mixed together. The interviewer uses the model to help the student build an understanding of what happened to form the precipitate. The student also changed
Essential Science for Teachers: Earth and Space Science
In-depth interviews with children that uncover their ideas about the topic at hand.,This video segment is helpful in showing how th einterviewer uses the phenomenon of the Hawaiian Islands formation to probe for the student's ideas about volcanoes and how volcanoes form land masses such as the islands. She draws a picture to explain her idea and then draws a different picture. The interviewer uses this to probe further by asking her why she changed her mind. He also tries to get her to think abo
Essential Science for Teachers: Earth and Space Science
In-depth interviews with children that uncover their ideas about the topic at hand.,This segment is helpful in showing teachers a useful technique to elicit students' ideas. The interviewer uses a refutation by stating a comment about what some scientists believe and asks the student to describe what she would say to them to refute their claim.
Guilford Courthouse National Military Park
describes weapons, medicine, food, leisure hours, and the role of women in the Revolutionary War. It also examines the battle that was the largest of the Southern Campaign and that helped change the course of the war.
This is a series of computer animations which demonstrate all the possible combinations of the ideal gas law or equation of state. Gases have various properties which we can observe with our senses, including the gas pressure, temperature, mass, and the volume which contains the gas. Careful, scientific observation has determined that these variables are related to one another and the values of these properties determine the state of the gas. In a scientific manner, we can fix any two of the fou
Students observe the relationship between the angle of a catapult (a force measurement) and the flight of a cotton ball. They learn how Newton's second law of motion works by seeing directly that F = ma. When they pull the metal "arm" back further, thus applying a greater force to the cotton ball, it causes the cotton ball to travel faster and farther. Students also learn that objects of greater mass require more force to result in the same distance traveled by a lighter object.
Changing Military Doctrine
General Pierre-Marie Gallois, often regarded as the 'father' of the French nuclear strategy, served with the Supreme Headquarters Allied Powers Europe (SHAPE) and with French president Charles de Gaulle. In this video segment, Gallois provides a perspective that was shared by many Europeans, including General de Gaulle: that to replace the strategy of 'massive retaliation' with 'flexible response' meant a weakening of the United States' commitment to defend Europe with nuclear weapons. In his in
Human Security in an Age of Turbulence
Mary Kaldor is a prolific author who has written widely on a range of key issues over the years ranging from the 'Baroque Arsenal' (1982) a study that challenged the logic of militarism and the belief that more weapons meant more security, through to her groundbreaking 'New Wars'(1999) a book that reveals the new forms that organized violence will take in the 21st century. Mary Kaldor today is one of the most influential and respected alternative voices in the field of applied international poli