These animations and videos introduce the concept of orders of magnitude in measurement.
- Florida State University offers an animation on length scales: Secret Worlds: The Universe Within
Two classic short films on this topic have recently become legally available for free online:
- The Eames film Powers of Ten (1977) is now officially available from the Eames Office on YouTube
- Eva Szasz’s Cosmic Zoom (1968) is available through the National Film Board of Canada
Of course, in aerial photos like those used in some of these videos, the scale varies across the image due to perspective effects.
- This simulation from Wolfram illustrates this.