MATHEMATICS A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site vertical-horizontal illusion Vertical lines looks considerably longer than horizontal ones of the same length. For centuries, it has been known that the height of trees and buildings is perceived to be greater than the horizontal distance between them. This may be because we live in gravity. See also distortion illusion. Related category    • MATHEMATICS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP