PheT Interactives
"Overview: Simulate the original experiment that proved that electrons can behave as waves. Watch electrons diffract off a crystal of atoms, interfering with themselves to create peaks and troughs of probability. Subject: Physics Level: High School Material T...
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Featured STEM Providers
Forces and Motion
"Overview: Explore the forces at work when you try to push a filing cabinet. Create an applied force and see the resulting friction force and total force acting on the cabinet. Charts show the forces, position, velocity,...
Isotopes and Atomic Mass
"Overview: Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element. Subject: Chemistry Leve...
Optical Tweezers and Applications
"Overview: Did you ever imagine that you can use light to move a microscopic plastic bead? Explore the forces on the bead or slow time to see the interaction with the laser's electric field. Use the optical tweezers to m...
Band Structure
"Overview: Explore the origin of energy bands in crystals of atoms. The structure of these bands determines how materials conduct electricity. Subject: Physics Level: High School Material Type: Simulation Author: Carl W...
Blackbody Spectrum
"Overview: How does the blackbody spectrum of the sun compare to visible light? Learn about the blackbody spectrum of the sun, a light bulb, an oven, and the earth. Adjust the temperature to see the wavelength and intens...
Natural Selection
"Overview: Explore natural selection by controlling the environment and causing mutations in bunnies. Subject: Genetics Level: High School Material Type: Simulation Author: Jonathan Olson, Noah Podolefsky, Wendy Adams P...
Density (AR)
"Overview: Why do objects like wood float in water? Does it depend on size? Create a custom object to explore the effects of mass and volume on density. Can you discover the relationship? Use the scale to measure the mas...
Electric Field Hockey
Electric Field Hockey
Gravity and Orbits (AR)
"Overview: Move the sun, earth, moon and space station to see how it affects their gravitational forces and orbital paths. Visualize the sizes and distances between different heavenly bodies, and turn off gravity to see...
Wave on a String (AR)
"Overview: Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjust the damping and tension. The end can be fixed, loose, or open....
Friction
"Overview: Learn how friction causes a material to heat up and melt. Rub two objects together and they heat up. When one reaches the melting temperature, particles break free as the material melts away. Subject: Physics...
Ohm's Law (AR)
"Overview: See how the equation form of Ohm's law relates to a simple circuit. Adjust the voltage and resistance, and see the current change according to Ohm's law. The sizes of the symbols in the equation change to matc...
Wave on a String
"Overview: Watch a string vibrate in slow motion. Wiggle the end of the string and make waves, or adjust the frequency and amplitude of an oscillator. Adjust the damping and tension. The end can be fixed, loose, or open....
Simplified MRI
"Overview: Is it a tumor? Magnetic Resonance Imaging (MRI) can tell. Your head is full of tiny radio transmitters (the nuclear spins of the hydrogen nuclei of your water molecules). In an MRI unit, these little radios ca...
Conductivity (AR)
"Overview: Experiment with conductivity in metals, plastics and photoconductors. See why metals conduct and plastics don't, and why some materials conduct only when you shine a flashlight on them. Subject: Physics Level...
Balancing Act
"Overview: Play with objects on a teeter totter to learn about balance. Test what you've learned by trying the Balance Challenge game. Subject: Physics Level: High School Material Type: Simulation Author: Ariel Paul, Jo...
Sound
"Overview: This simulation lets you see sound waves. Adjust the frequency or volume and you can see and hear how the wave changes. Move the listener around and hear what she hears. Subject: Physics Level: High School Ma...
Area Builder
"Overview: Create your own shapes using colorful blocks and explore the relationship between perimeter and area. Compare the area and perimeter of two shapes side-by-side. Challenge yourself in the game screen to build s...
Curve Fitting
"Overview: With your mouse, drag data points and their error bars, and watch the best-fit polynomial curve update instantly. You choose the type of fit: linear, quadratic, cubic, or quartic. The reduced chi-square statis...
Maze Game
"Overview: Learn about position, velocity, and acceleration in the ""Arena of Pain"". Use the green arrow to move the ball. Add more walls to the arena to make the game more difficult. Try to make a goal as fast as you c...