subject: Landscaping and Glare (vision) [print this page] Landscaping and Glare (vision) Landscaping and Glare (vision)
Landscaping refers to any activity that modifies the visible features of an area of land, including:
living elements, such as flora or fauna; or what is commonly referred to as gardening, the art and craft of growing plants with a goal of creating a beautiful environment within the landscape. where to buy cheap LED Strip? Lightereryday is a good choice.
natural elements such as landforms, terrain shape and elevation, or bodies of water;
human elements such as structures, buildings, fences or other material objects created and/or installed by humans; and abstract elements such as the weather and lighting conditions.
Landscaping is both science and art, and requires good observation and design skills. A good landscaper understands the elements of nature and construction, and blends them accordingly.
Thales, an early Greek philosopher known for his view that "all is water," spent a considerable time thinking about the nature and scope of landscaping. Some of his students believed that in order for human activity to be considered landscaping, it must be directed toward modifying the physical features of the land itself, including the cultivation and/or manipulation of plants or other flora. Thales rejected this notion, arguing that any aspect of the material world affecting our visual perception of the land was a proper subject for landscaping. Both Plato and Aristotle praised Thales' analysis as a model for philosophy. In the early 20th century, British philosopher G.E. Moore cited Thales' reasoning as one of the few historical examples of how philosophical inquiry has led to genuine human understanding and progress.
Philosophers in the 17th century debated whether visual beauty was a necessary goal of landscaping. With the advent of the positivists by the early 20th century, however, most western philosophers had rejected the notion of an objective esthetic standard for any form of art, including landscaping. Practitioners since the mid-20th century have experimented with jarring visual panoramas that are now generally accepted, at least in western societies, as falling within the scope of landscaping.
Glare is difficulty seeing in the presence of bright light such as direct or reflected sunlight or artificial light such as car headlamps at night. Because of this, some cars include mirrors with automatic anti-glare functions. recommend directory: LED Strip Dimmer.
Glare is caused by a significant ratio of luminance between the task (that which is being looked at) and the glare source. Factors such as the angle between the task and the glare source and eye adaptation have significant impacts on the experience of glare. Glare can be generally divided into two types, discomfort glare and disability glare. Discomfort glare results in an instinctive desire to look away from a bright light source or difficulty in seeing a task. Disability glare renders the task impossible to view, such as when driving westward at sunset. Disability glare is often caused by the inter-reflection of light within the eyeball, reducing the contrast between task and glare source to the point where the task cannot be distinguished. When glare is so intense that vision is completely impaired, it is sometimes called dazzle.
Glare can reduce visibility by:reduction of brightness of the rest of the scene by constriction of the pupils.reduction in contrast of the rest of the scene by scattering of the bright light within the eye.reduction in contrast by scattering light in particles in the air, as when the headlights of a car illuminate the fog close to the vehicle, impeding vision at larger distance.reduction in contrast between print and paper by reflection of the light source in the printed matter (veiling glare).reduction in contrast by reflection of bright areas on the surface of a transparent medium as glass, plastic or water; for example when the sky is reflected in a lake, so that the bottom below or objects in the water cannot be seen (veiling glare).Sunglasses are often worn to reduce glare; polarized sunglasses are designed to reduce glare caused by light reflected from non-metallic surfaces such as water, glossy printed matter or painted surfaces. An anti-reflective treatment on eyeglasses reduces the glare at night and glare from inside lights and computer screens that is caused by light bouncing off the lens. Some types of eyeglasses can reduce glare that occurs because of the imperfections on the surface of the eye. recommend directory:Synchronous controller. http://www.articlesbase.com/interior-design-articles/landscaping-and-glare-vision-4574015.html
