Credit: NASA/SCIENCE PHOTO LIBRARY

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Caption: Van der Waals force. Old-fashioned news-flash style clip explaining van der Waals force, using animation and a portrait of Johannes Diderik van der Waals. Although a molecule may be neutral overall, the charge distribution may not be even across the molecule. This results in a separation of charge within the molecule, creating a dipole. Net attraction or repulsion between such polar molecules (or between parts of the same molecule) is the van der Waal's force, named after Dutch scientist Johannes Diderik van der Waals. These forces are weaker than covalent or ionic bonds.

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Van der Waals Force

K005/2993 Rights Managed

Downloadable master

Duration: 00:00:21.09

Frame size: 1280x720

Frame rate: 30

Audio: Yes

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 242.5M

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Capture format: QuickTime Animation

Codec: H.264

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