Acclimation is the adaptation of organisms to new conditions of existence.
http://mrec.ifas.ufl.edu/Foliage/Resrpts/rh_91_5.htm
specific information about the acclimatization of Ficus benjamina this is a technical, and very thorough review of the concept and application of acclimatization, deep and thorough, with excellent bibio references.
http://aggie-horticulture.tamu.edu/plantanswers/publications/houseplant/houseplant.html
designed to familiarize you with the basic aspects of tropical plant care
http://www.lowes.com/projects/gardening-and-outdoor/move-houseplants-outdoors-for-the-summer/project
discusses moving your indoor plants outdoors for a "summer vacation".