Grass

diggFurldel.icio.usFacebook

Grass appears to be green due to the wavelength at which it reflects light. However, from above, the angle causes light to be reflected differently, making the grass appear blue. Map producers will colour this in to allow viewers to differentiate from sea and land, and of course aircraft windows are fitted with special filters.

All content copyright Tom Crowley

Unless otherwise stated, the content of this page is licensed under Creative Commons Attribution-ShareAlike 3.0 License