Beats

http://www.walter-fendt.de/ph14e/beats.htm

Radioactive decay

A simulation illustrating radioactive decay.

The table shows some isotopes.

Choose an element and check whether it is stable or not.

If it is unstable, wait a few seconds and it will decay.
http://www.colorado.edu/physics/2000/applets/iso.html

Galilean relativity

A simulation illustrating Galileo's experiment about relative motion.

A train is moving with constant velocity v and people are standing on the platform.

Balls are dropped or thrown with velocity v, both inside and outside the train.


http://www.phys.unsw.edu.au/einsteinlight/jw/module1_Galileo_and_Newton.htm

Reflection-refraction

Overview:

A simulation which explores reflection and refraction from air to glass and from glass to air, including total internal reflection.

You may change the:

* Index of refraction of the glass
* Angle of incidence
http://inspire.eun.org/index.php/P2-13-6
http://www.upscale.utoronto.ca/PVB/Harrison/Flash/Optics/Refraction/Refraction.html

Ohm’s law

http://www.walter-fendt.de/ph14e/ohmslaw.htm
This simulation explores intensity (I) and voltage (V) in a simple circuit.

You may change the:

* Maximum values tolerated by the meters
* Resistance, R
* Battery voltage, E

You can measure:

* Intensity, I
* Voltage, V

Sound Wave

http://illuminations.nctm.org/ActivityDetail.aspx?ID=37
Frequently sound is described using terms such as pitch, tone, frequency, intensity or loudness. To understand the origins of these terms as well as to understand the mathematical models used to represent sound, this applet can help you to explore the dynamics of a sound wave.

Motion with Constant Acceleration

http://www.walter-fendt.de/ph14e/acceleration.htm
A car moves with constant acceleration.

Digital clocks indicate the time elapsed since the car starts moving and up to the green or red light barrier.

Diagrams illustrate the motion versus time t in terms of:

* Position x
* Velocity v
* Acceleration a

Velocity and acceleration vectors may be displayed.