Millikan's oil drop experiment: 3D computer animation, with audio narration, explain to you about the Millikan's oil drop experiment, which led to the determination of the charge of an electron.
Sample movie from the Atomic Orbitals CD in three segments for easy download:
Segment 1: sample-millikan1.mov (~8 MB)
Segment 2: sample-millikan2.mov (~6.5 MB)
Segment 3: sample-millikan4.mov (~ 5 MB)

Wave function of the 3dxz orbital: A QuickTime (~190K): shows a rotating 3dxz orbital.
From the Atomic Orbitals CD.

Electron distribution of the 2py orbital: A QuickTime (~1.3 MB): shows XY, YZ, and XZ slices through the 2py orbital revealing the electron density distribution in 3-dimension.
From the Atomic Orbitals CD.

      sp2 hybrid orbitals: An 2s orbital mixed with two 2p orbitals gives three sp2 orbitals. Here, three GIF pictures showing these three sp2 hybrid orbitals.
From the Atomic Orbitals CD.

DNA: QuickTime (1.0M, 290x288 pixels) movies showing a rotating double helix DNA segment. Original molecular images were generated with HyperChem for Windows.

  Protein: QuickTime (4.0M, 321x374 pixels). Ribbon representation of Phosphopyruvate dehydratase x-ray crystal structure from Brookhaven Protein Data Bank. Images were generated using MSI's Quanta 3.31. Movie was composed in Adobe Premiere 3.0. The QuickTime movie uses the animation codec and requires a data transfer rate of 260 K/sec or higher for smooth playback.

  Anaglyphic (red-blue) movie of HIV protease-inhibitor complex: QuickTime (326K, 350x232 pixels) Note: You need a pair of red-blue glasses (red on the left-eye and blue on the right-eye) to view this stereo movie. You can see it rotating in 3D! It shows a rotating HIV protease-inhibitor complex in ribbon and sticks representations (x-ray crystallographic data obtained from Brookhaven Protein Data Bank).

If you do not have the red-blue glasses, you can still see the color versions: QuickTime (632K, 320x240 pixels).

Aspirin: QuickTime (813K, 320x240 pixels) movies showing aspirin in thin bond, ball and stick, liquorice, VDW and ray trace representations. Original 24-bit molecular images were generated with MSI's Quanta from the X-ray structure.

  Ethanol: QuickTime (342K, 320x240 pixels) movies showing ethanol in stick, dot surface, disc and shaded sphere representations. Original molecular images were generated with HyperChem for Windows.

  2-Butanol: This is an interactive tutorial intended to train the skills of visual correlation of a line-drawing chemical structure with its 3-dimensional molecular model structure. 2-butanol is used as an example. Four representations (line-drawing carbon backbone, wire frame, ball-and-stick, and space filling models) will be shown simultaneously. The rotation of all four models are synchronized, so you can examine, compare, and make correlation between these models easier. Try to correlate the 2D line-drawing carbon backbone with the 3D molecular structures, by figuring out the position of each atom in different representations.

• On-line: Macromedia Shockwave (444K). You need Netscape 4.0+ or Internet Explorer 4.0+ AND the Shockwave plug-in/activX to play it on-line.

  Visualization -- Visual Correlation of a Line Drawing Chemical Structure with a 3D Model: 2-Butanol is used as an example. Sychronized rotation of four different models. Drag to rotate them.

All the movies and graphics in this page were created by Yue-Ling Wong , who also maintain this page.