Each moment events take place that the human eye cannot perceive because these occurrences are too small, too large, too fast, too slow, or beyond the spectrum of visible light. Entire worlds might escape our inspection if it were not for some extraordinary photographic techniques, sophisticated cameras, and imaging devices. The Invisible World will captivate you with the sight of water crystallizing into ice; a single atom's movement within solid matter; a bullet speeding towards its target—and will forever alter your understanding and perception of the world.

Not available for shipment outside of the U.S. and Canada.

• © 1994
• 1 disc; 60 minutes

National Geographic DVD Exclusives

For the first time ever, National Geographic presents its programming in DVD-R format. Available exclusively through this site, you can now own more of our award-winning specials and documentaries in a high-quality DVD format.

How our DVDs and DVD-Rs Differ

Customers who purchase programs in the NG DVD Exclusives Library will receive a non-interactive, play only disc. There is no chaptering information on these DVDs, but there are chapter marks approximately every five minutes, which make it easy to fast forward through a program. The DVD-R format provides the digital video and audio quality you expect from all of our DVDs.

NOTE: The NG DVD Exclusives titles are not closed-captioned. We apologize for any inconvenience this limitation may cause.