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  • Noah Podolefsky
Alpha Decay
Unrestricted Use
CC BY
Rating

Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life.

Subject:
Physical Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
John Blanco
Kathy Perkins
Noah Podolefsky
Ron LeMaster
Sam McKagan
Wendy Adams
Date Added:
07/21/2011
Alpha Decay (AR)
Unrestricted Use
CC BY
Rating

Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life.

Subject:
Physical Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
John Blanco
Kathy Perkins
Noah Podolefsky
Ron LeMaster
Sam McKagan
Wendy Adams
Date Added:
09/02/2012
Atomic Interactions
Unrestricted Use
CC BY
Rating

Explore the interactions between various combinations of two atoms. Turn on the force arrows to see either the total force acting on the atoms or the individual attractive and repulsive forces. Try the "Adjustable Attraction" atom to see how changing the parameters affects the interaction.

Subject:
Chemistry
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Jack Barbera
John Blanco
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Wendy Adams
Date Added:
08/01/2009
Atomic Interactions (AR)
Unrestricted Use
CC BY
Rating

Explore the interactions between various combinations of two atoms. Turn on the force arrows to see either the total force acting on the atoms or the individual attractive and repulsive forces. Try the "Adjustable Attraction" atom to see how changing the parameters affects the interaction.

Subject:
Chemistry
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Jack Barbera
John Blanco
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Wendy Adams
Date Added:
08/01/2009
Bending Light
Unrestricted Use
CC BY
Rating

Explore bending of light between two media with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Emily Moore
Kathy Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
University of Colorado at Boulder
Date Added:
05/09/2011
Buoyancy
Unrestricted Use
CC BY
Rating

When will objects float and when will they sink? Learn how buoyancy works with blocks. Arrows show the applied forces, and you can modify the properties of the blocks and the fluid.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Carl Wieman
Chris Malley
Jonathan Olson
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Sam Reid
Trish Loeblein
Wendy Adams
Date Added:
09/30/2010
Buoyancy (AR)
Unrestricted Use
CC BY
Rating

When will objects float and when will they sink? Learn how buoyancy works with blocks. Arrows show the applied forces, and you can modify the properties of the blocks and the fluid.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Carl Wieman
Chris Malley
Jonathan Olson
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Patricia Loblein
Sam Reid
Wendy Adams
Date Added:
10/01/2010
Capacitor Lab
Unrestricted Use
CC BY
Rating

Explore how a capacitor works! Change the size of the plates and add a dielectric to see how it affects capacitance. Change the voltage and see charges built up on the plates. Shows the electric field in the capacitor. Measure voltage and electric field.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Chris Malley
Kathy Perkins
Mike Dubson
Noah Podolefsky
Date Added:
09/30/2011
Density
Unrestricted Use
CC BY
Rating

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 mass of an object, then hold the object under water to measure its volume. Can you identify all the mystery objects?

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Carl Wieman
Chris Malley
Jonathan Olson
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Sam Reid
Trish Loeblein
Wendy Adams
Date Added:
02/16/2011
Density (AR)
Unrestricted Use
CC BY
Rating

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 mass of an object, then hold the object under water to measure its volume. Can you identify all the mystery objects?

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Archie Paulson
Carl Wieman
Chris Malley
Jonathan Olson
Kathy Perkins
Kelly Lancaster
Noah Podolefsky
Patricia Loblein
Sam Reid
Wendy Adams
Date Added:
09/01/2010
Eating & Exercise
Unrestricted Use
CC BY
Rating

How many calories are in your favorite foods? How much exercise would you have to do to burn off these calories? What is the relationship between calories and weight? Explore these issues by choosing diet and exercise and keeping an eye on your weight.

Subject:
Health, Medicine and Nursing
Life Science
Anatomy/Physiology
Biology
Ecology
Forestry and Agriculture
Mathematics
Physics
Material Type:
Activity/Lab
Interactive
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Franny Benay
Kate Semsar
Kathy Perkins
Noah
Noah Podolefsky
Sam Reid
Wendy Adams
Date Added:
10/01/2008
Energy Forms and Changes
Unrestricted Use
CC BY
Rating

This simulation lets learners explore how heating and cooling adds or removes energy. Use a slider to heat blocks of iron or brick to see the energy flow. Next, build your own system to convert mechanical, light, or chemical energy into electrical or thermal energy. (Learners can choose sunlight, steam, flowing water, or mechanical energy to power their systems.) The simulation allows students to visualize energy transformation and describe how energy flows in various systems. Through examples from everyday life, it also bolsters understanding of conservation of energy. This item is part of a larger collection of simulations developed by the Physics Education Technology project (PhET).

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Ariel Paul
Emily Moore
John Blanco
Kathy Perkins
Noah Podolefsky
Trish Loeblein
Date Added:
04/25/2013
Energy Skate Park: Basics
Unrestricted Use
CC BY
Rating

Students will: Predict the kinetic and potential energy of objects Design a skate park Examine how kinetic and potential energy interact with each other

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Ariel Paul
Emily B Moore
Katherine Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
01/31/2012
Fluid Pressure and Flow
Unrestricted Use
CC BY
Rating

Explore pressure in the atmosphere and underwater. Reshape a pipe to see how it changes fluid flow speed. Experiment with a leaky water tower to see how the height and water level determine the water trajectory.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Ariel Paul
Kathy Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
05/29/2012
Forces and Motion (AR)
Unrestricted Use
CC BY
Rating

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, and acceleration vs. time. View a Free Body Diagram of all the forces (including gravitational and normal forces).

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Kathy Perkins
Noah Podolefsky
Patricia Loblein
Sam Reid
Date Added:
10/01/2010
Forces and Motion: Basics
Unrestricted Use
CC BY
Rating

Explore the forces at work in a tug of war or pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Ariel Paul
Kathy Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
10/24/2012
Fraction Matcher
Unrestricted Use
CC BY
Rating

Match shapes and numbers to earn stars in this fractions game. Challenge yourself on any level you like. Try to collect lots of stars! The main topics of this interactive simulation include fractions, equivalent fractions, and mixed numbers.

Subject:
Ratios and Proportions
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Ariel Paul
Kathy Perkins
Mike Dubson
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
06/29/2012
Gene Machine: The Lac Operon
Unrestricted Use
CC BY
Rating

Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.

Subject:
Genetics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
George Spiegelman
Jared Taylor
John Blanco
Kathy Perkins
Noah Podolefsky
Date Added:
05/01/2010
Gene Machine: The Lac Operon (AR)
Unrestricted Use
CC BY
Rating

Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial cells. Explore the effects of mutations within the lac operon by adding or removing genes from the DNA.

Subject:
Genetics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
George Speigelman
Jared Taylor
John Blanco
Kathy Perkins
Noah Podolefsky
Date Added:
05/01/2010
Gravity Force Lab
Unrestricted Use
CC BY
Rating

Visualize the gravitational force that two objects exert on each other. Change properties of the objects in order to see how it changes the gravity force.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
11/12/2010
Gravity Force Lab (AR)
Unrestricted Use
CC BY
Rating

Visualize the gravitational force that two objects exert on each other. Change properties of the objects in order to see how it changes the gravity force.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Noah Podolefsky
Patricia Loblein
Sam Reid
Date Added:
02/02/2013
Gravity and Orbits
Unrestricted Use
CC BY
Rating

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 what would happen without it!

Subject:
Astronomy
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Chris Malley
Emily Moore
John Blanco
Jon Olson
Kathy Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
02/07/2011
Gravity and Orbits (AR)
Unrestricted Use
CC BY
Rating

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 what would happen without it!

Subject:
Astronomy
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Chris Malley
Emily Moore
John Blanco
Jon Olson
Kathy Perkins
Noah Podolefsky
Patricia Loblein
Sam Reid
Date Added:
02/07/2011
Ladybug Motion 2D
Unrestricted Use
CC BY
Rating

Learn about position, velocity and acceleration vectors. Move the ladybug by setting the position, velocity or acceleration, and see how the vectors change. Choose linear, circular or elliptical motion, and record and playback the motion to analyze the behavior.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Noah Podolefsky
Sam Reid
Trish Loeblein
Wendy Adams
Date Added:
04/01/2009
Neuron
Unrestricted Use
CC BY
Rating

Stimulate a neuron and monitor what happens. Pause, rewind, and move forward in time in order to observe the ions as they move across the neuron membrane.

Subject:
Biology
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
John Blanco
Katherine Perkins
Noah Podolefsky
Wendy Adams
Date Added:
10/01/2010
Nuclear Fission
Unrestricted Use
CC BY
Rating

Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor! (Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.)

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
John Blanco
Kathy Perkins
Noah Podolefsky
Ron LeMaster
Sam McKagan
Wendy Adams
Date Added:
07/19/2011
Nuclear Fission (AR)
Unrestricted Use
CC BY
Rating

Start a chain reaction, or introduce non-radioactive isotopes to prevent one. Control energy production in a nuclear reactor! (Previously part of the Nuclear Physics simulation - now there are separate Alpha Decay and Nuclear Fission sims.)

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
John Blanco
Kathy Perkins
Noah Podolefsky
Ron LeMaster
Sam McKagan
Wendy Adams
Date Added:
07/02/2008
Plate Tectonics
Unrestricted Use
CC BY
Rating

Explore how plates move on the surface of the earth. Change temperature, composition, and thickness of plates. Discover how to create new mountains, volcanoes, or oceans!

Subject:
Geology
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Emily Moore
Heather Houlton
Jonathan Olson
Kathy Perkins
Kat Quigley
Kevin Beals
Lauren Brodsky
Noah Podolefsky
Phaela Peck
Suzy Loper
Date Added:
08/20/2012
Radio Waves & Electromagnetic Fields
Unrestricted Use
CC BY
Rating

Broadcast radio waves from KPhET. Wiggle the transmitter electron manually or have it oscillate automatically. Display the field as a curve or vectors. The strip chart shows the electron positions at the transmitter and at the receiver.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Michael Dubson
Noah Podolefsky
Ron LeMaster
Wendy Adams
Date Added:
10/06/2006
Radio Waves & Electromagnetic Fields (AR)
Unrestricted Use
CC BY
Rating

Broadcast radio waves from KPhET. Wiggle the transmitter electron manually or have it oscillate automatically. Display the field as a curve or vectors. The strip chart shows the electron positions at the transmitter and at the receiver.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Michael Dubson
Noah Podolefsky
Ron LeMaster
Wendy Adams
Date Added:
06/02/2008
Radioactive Dating Game
Unrestricted Use
CC BY
Rating

Learn about different types of radiometric dating, such as carbon dating. Understand how decay and half life work to enable radiometric dating to work. Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
John Blanco
Kathy Perkins
Noah Podolefsky
Wendy Adams
Date Added:
01/01/2009
Radioactive Dating Game (AR)
Unrestricted Use
CC BY
Rating

Learn about different types of radiometric dating, such as carbon dating. Understand how decay and half life work to enable radiometric dating to work. Play a game that tests your ability to match the percentage of the dating element that remains to the age of the object.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
John Blanco
Kathy Perkins
Noah Podolefsky
Wendy Adams
Date Added:
01/02/2013
Ramp: Forces and Motion
Unrestricted Use
CC BY
Rating

Explore forces and motion as you push household objects up and down a ramp. Lower and raise the ramp to see how the angle of inclination affects the parallel forces. Graphs show forces, energy and work.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Kathy Perkins
Noah Podolefsky
Sam Reid
Trish Loeblein
Date Added:
10/01/2010
States of Matter
Unrestricted Use
CC BY
Rating

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
John Blanco
Kathy Perkins
Noah Podolefsky
Paul Beale
Sarah McKagan
Trish Loeblein
Wendy Adams
Date Added:
07/18/2011
States of Matter (AR)
Unrestricted Use
CC BY
Rating

Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.

Subject:
Physics
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
John Blanco
Kathy Perkins
Noah Podolefsky
Patricia Loblein
Paul Beale
Sarah McKagan
Wendy Adams
Date Added:
11/01/2008
تحلل بيتا
Conditional Remix & Share Permitted
CC BY-NC
Rating

أداة محاكاة تشرح حدوث تحلل بيتا لمجموعة من النويات أو لنواة واحدة.

PhET Interactive Simulations
University of Colorado Boulder
https://phet.colorado.edu

Subject:
Physical Science
Material Type:
Simulation
Provider:
جامعة كولورادو بولدر
Author:
Carl Wieman
Interviewer: Noah Podolefsky
John Blanco (developer)
Kathy Perkins
Noah Podolefsky
Piccolo
Wendy Adams
Date Added:
11/13/2016