- Atomic Emission Applet
This applet presents the user with an energy level diagram of an atom. The values of the levels (in eV) can be set by parameter tags. Relative transition probabilities can also be set by parameter tags. An active electron can be moved to any level by using the pointing device and then the electron will cascade down to the ground level according to the relative transition probabilities that have been set up.
http://jersey.uoregon.edu/vlab/ae2/Ae2_plugin.html
(Added: Sun Oct 27 2002)
- Atomic Energy Levels
This applet shows the Bohr model along with a diagram showing the energy level. This "energy level" picture of an atom is so useful that most physicists prefer it over the orbital picture.
http://www.colorado.edu/physics/2000/quantumzone/bohr2.html
(Added: Sun Oct 27 2002)
- Atomic Spectra Applet
In this Java Applet, there is a device below the Bohr model that works like a prism or a diffraction grating. It shows the atomic spectrum for a hydrogen atom. Whenever a photon is emitted, it shows up on the spectrum according to its wavelength.
http://www.colorado.edu/physics/2000/quantumzone/lines2.html
(Added: Sun Oct 27 2002)
- Blackbody
A blackbody is a hypothetic body that completely absorbs all wavelengths of thermal radiation incident on it.
http://scienceworld.wolfram.com/physics/Blackbody.html
(Added: Sat Oct 26 2002)
- Bohr's Atom
This web page describes the Bohr model of the atom. It contains a Java Applet that allow the user to change the energy levels of the electron within a simulated atom.
http://www.colorado.edu/physics/2000/quantumzone/bohr.html
(Added: Sun Oct 27 2002)
- Dispersion of Light
This Java Applet demonstrates the dispersion of light through a prism.
http://library.thinkquest.org/C003776/espanol/fun/applet3.htm
(Added: Sun Oct 27 2002)
- Dispersion of Light
Refraction index of any material depends upon the wavelength of the light. This fact can be used to resolve the light beam into the spectral components.
http://www.geocities.com/SiliconValley/Port/2014/prism_txt.html
(Added: Sat Oct 26 2002)
- Doppler Effect
The Doppler shift (sometimes called the Doppler effect) is a change in frequency of emitted waves produced by motion of an emitting source relative to an observer. A description of the mathematics of the Doppler Effect is provided by Eric Weisstein's World of Physics and Astronomy.
http://scienceworld.wolfram.com/physics/DopplerEffect.html
(Added: Sun Oct 27 2002)
- Doppler Effect Applet
Here you can visualize the Doppler effect. It's easy: Just click anywhere within the gray area and drag the mouse. An arrow representing the source velocity vector will appear.
http://lectureonline.cl.msu.edu/~mmp/applist/doppler/d.htm
(Added: Sun Oct 27 2002)
- Doppler Effect Applet
Adjust the slider to change the speed of the police car. Watch for details in the background that change on each pass.
http://www.colorado.edu/physics/2000/applets/doppler.html
(Added: Sat Oct 26 2002)
- Doppler Effect for Sound
Dial 911 on this Java Applet and listen to the Doppler Effect for the sound of the police siren.
http://www.colorado.edu/physics/2000/applets/doppler2.html
(Added: Sun Oct 27 2002)
- Doppler Effect, Redshift, and Blueshift
Find out how redshift and blueshifts in spectra are caused by the Doppler Effect.
http://www.exploratorium.edu/origins/hubble/tools/doppler.html
(Added: Sun Oct 27 2002)
- Electric Force Applet
To understand electric fields and electromagnetic waves, you need to know how charges (such as "negative" electrons and "positive" protons) cause each other to move. This applet allow the use to examine the effects of electric charge.
http://www.colorado.edu/physics/2000/waves_particles/wavpart2.html
(Added: Sun Oct 27 2002)
- Electromagnetic Waves Applet
Light, microwaves, x-rays, and TV and radio transmissions are all kinds of electromagnetic waves. They are all the same kind of wavy disturbance that repeats itself over a distance called the wavelength. The applet allow the user to investigate the different parts of the electromagnetic spectrum.
http://www.colorado.edu/physics/2000/waves_particles/index.html
(Added: Sat Oct 26 2002)
- Elemental Spectra Applet
This applet displays the periodic table of elements. Clicking on an element will show its line spectrum (as a neutral species).
http://jersey.uoregon.edu/vlab/elements/Elements.html
(Added: Sun Oct 27 2002)
- How Light Works
Howstuffworks describes the many properties of light and provides related links.
http://www.howstuffworks.com/light.htm
(Added: Sun Oct 27 2002)
- Isotopes & Radioactivity
Investigate isotopes and radioactivity with this interactive Java Applet.
http://www.colorado.edu/physics/2000/isotopes/radioactive_decay.html
(Added: Sun Oct 27 2002)
- Lightyear and a Parsec
The definitions of lightyear and parsec are provided by Eric Weisstein's World of Physics and Astronomy.
http://scienceworld.wolfram.com/astronomy/Light-Year.html
(Added: Sat Oct 26 2002)
- Nuclear Fusion
Nuclear Fusion is the energy-producing process which takes place continuously in the sun and stars. In the core of the sun at temperatures of 10-15 million degrees Celsius, Hydrogen is converted to Helium providing enough energy to sustain life on earth.
http://www.jet.efda.org/pages/content/fusion1.html
(Added: Sat Oct 26 2002)
- Phases of Matter
This site provides a description of the phases matter, molecular stickiness, thermodynamics, and phase diagrams.
http://www.chem.ufl.edu/~itl/2045_s99/lectures/lec_f.html
(Added: Sat Oct 26 2002)
- Photons and Light
Learn about the wave-particle dualism on this site. This web page also provides descriptions of the properties of light.
http://zebu.uoregon.edu/2000/ph101/lec05.html
(Added: Sat Oct 26 2002)
- Planks Radiation Function Applet
In this applet the user selects a temperature for a star and the resultant blackbody spectrum for that temperature is shown.
http://jersey.uoregon.edu/vlab/prf/PRF_plugin.html
(Added: Sun Oct 27 2002)
- Reflection and Refraction
This animation shows how light can be reflected and refracted when it strikes an interface between two different media.
http://www.phy.ntnu.edu.tw/java/propagation/propagation.html
(Added: Sat Oct 26 2002)
- Schrödinger's Atom
So what's wrong with the idea of electrons going around in orbits? A physicist named Erwin Schrödinger showed that electrons are really waves. You can interact with the hydrogen atom in this applet and you will see the changes in the Schrödinger model as well.
http://www.colorado.edu/physics/2000/quantumzone/schroedinger.html
(Added: Sun Oct 27 2002)
- Spectral Lines Applet
At the end of 19th century, physicists knew there were electrons inside atoms, and that the wiggling of these electrons gave off light and other electromagnetic radiation. This site contains information and a Java Applet dealing with Spectral Lines.
http://www.colorado.edu/physics/2000/quantumzone/index.html
(Added: Sat Oct 26 2002)
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