Important people and events often are captured in photos that are preserved long after the people themselves are gone, allowing later generations to experience history. Photography is a well-established medium for preserving family and cultural histories as well.
A sliding glass door. A sliding glass door or patio door, is a type of sliding door in architecture and construction, is a large glass window opening in a structure that provide door access from a room to the outdoors, fresh air, and copious natural light. A sliding glass door is usually considered a single unit consisting of two panel sections, one being fixed and one a being mobile to slide open. Another design, a wall sized glass pocket door has one or more panels movable and sliding into wall pockets, completely disappearing for a 'wide open' indoor-outdoor room experience.
The most commonly seen sliding glass door in the U.S. is 6'8 tall, with one fixed and one movable 30 wide door panel, which adds up to 60 or five feet wide. The word standard is misleading.