natural light and illumination

Report on NATUTAL LIGHT & ILLUMINATION Name –SUMIT RAINASubject -BUILDING SERVICES B. ARCH PART TIME YCMOU

AAYOJAN SCHOOL OF ARCHITECTURE SEMESTER - V

REPORT ON NATURAL LIGHT & ILLUMINATION



NATURAL LIGHT : Daylight provides a better lighting environment than cool white or energy-efficient fluorescentelectrical light sources because “daylight…most closely matches the visual response that, through evolution, humans have come to compare with all other light” (Franta and Anstead 1994). The majority of humans prefer a daylit environment because sunlight consists of a balanced spectrum of color, with its energy peaking slightly in the blue-green area of the visible spectrum

USES OF NATURAL LIGHT: Health BenefitsUV radiation from the sun causes skin cancer, but only in high doses over many years. Small daily doses of natural light help you sleep, according to Deborah Kotz in a June 2008 article for "US News and World Report." Exposing yourself to natural light tells your body to stop melatonin production. This prevents daytime drowsiness. Exposure to sunlight also causes the body to produce more serotonin. Low serotonin production is believed to be a cause of depression. People who suffer from Seasonal Affective Disorder find relief by using lamps that mimic the spectrum of natural light in the winter, when less sunlight is available.PlantationPlants grow best in natural light, which contains a broad spectrum of colors. House plants often grow slowly or lose leaves due to inadequate light. Southern-facing windows provide the most natural light for indoor plants, says the Texas A&M University Agricultural Extension Office. Eastern and western-facing Windows may also work, but they only receive 60 percent of the light a Southern-facing window does. Fluorescent lights provide the blue spectrum of light most plants use for leaf production, but are missing the infrared wavelengths of natural light, which stimulates flowering.



PhotographyNatural-light photography takes advantage of the abundant sunlight available during the day. Shooting in natural light prevents the need for expensive artificial light, which can be difficult to set up. Different conditions, such as cloud cover or a setting sun, change the color and intensity of natural light.



LIGHTING OR ILLUMINATION is the deliberate use of light to achieve a practical or aesthetic effect. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylight. Daylight (using windows, skylights, or light shelves) is sometimes used as the main source of light during daytime in buildings. This can save energy in place of using artificial lighting, which represents a major component of energy consumption in buildings. Proper lighting can enhance task performance, improve the appearance of an area, or have positive psychological effects on occupants.



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