I’ve linked before to the Eames’ mind-opening short film, Powers of Ten.
Here’s another incarnation of the Eames’ idea, with updated physics, interactive display, and simply lovely music. No kidding, follow the link for the music alone.
Usability note: The link takes you to what appears to be a game-oriented bulletin board. The post itself contains a large, gaudy ad for some random game. Don’t click in that. Instead, click on the word “Play” underneath it, displayed in plain white type against a dark gray background.
Unlike the Eames movie, this demo does not play itself, despite the music. You must move the slider to change scales. I recommend the left/right arrows on your keyboard rather than your mouse.
It’s more work, yes, but gives you much more control over the pace of the thing.