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Nebulae developer | Light Design

             Brightness ….. its perception, Brightness is a function of the Amount of light falling on the surface and Reflectivity of the surface. Parent Brightness depends on the ability of the eyes to adapt to its surroundings. Competing Brightness’s we able for good visibility conditions. Control of relative brightness determines the success of the lighting system. Excessive brightness rations in the filed of view results in poor visibility.

           Factors to be considered variation in the amount and direction of the incident light. Variation in the sunlight intensity and position in the sky. Luminance and Luminance Distribution of clear, partly cloudy and over cast sky. Effects of local Terrain Landscaping and nearby buildings on the available day light.

Daily and seasonal variations – due to movement of the Sun variations due to changes in Weather (clarity of the sky) variations due to Cloud Movements which occur within seconds. Day light May lead to problems of Overheating under lighting has better results as a slightly under lit roomies Psychologically more acceptable, as light is mentally associated with warmth and Reduced lighting with coolness.

Amount of light varies with Depth of Atmosphere, The sunlight travels, Elevation of Sun above Horizon, Amount of Atmospheric Dust and Moisture. The Position of the Sun with respect top any reference point is expressed to any solar Altitude and Solar Azimuth Angles. Luminance on exterior surface is due the Amount of dust and Haza.

Daylight in sunrise and sunset are very warm. At Noon the light is cool and even cooler if the sky is over cast. Warm North west slay Noon clear blue over cask sky cool sunrise, sunset. Incandescence light warm Yellowish Halogne light. Enhanced blue Spectrum Florescent light. Cool source sunlight. Yellow Skylights white Bluish.

Although surface colour has long been a primary consideration, colour as a controlled characteristic of light has historic precedence.

Results from the complex interaction between a light source, an object, the eye and the brain. Darkness is the counterpart of light. Each complements theater a bright surface could be appreciated fully when compared with a relatively darkener surfaces of | luminance affected by psychological factor.

            Satisfaction derived from a window view is related to the total visual field which it occupies and hence is a function of solid angle. National stratification of view immediate foreground middle distance sky if for some reason view is restricted at least some portion of each layer should be visible rather than one layer alone. Further transoms should not obstruct the dividing lines.
  • The sky if formation about (upward) time of day weather conditions. Provides varying light Exposure thus reducing monotony | Maintenance of Proper Biological cycles.
  • The Horizon – Stabilizing, Comforting inner feeling (Level) Maintains senses of Balance.
  • The ground Keeps one in tough with outside Activities & with nature.
More effective in letting in daylight granter in formation of time & weather

Preferred by most people provides the most desirables view stimulation along Horizontal Axis.

            A polar plot of the luminous intensity emitted by a lamp, luminaries, or window in light source measured in a single plane for a symmetrical light source, and in 45 plane for an asymmetrical source.

A graphic plot of the pattern of illumination produced to a surface by a lam or luminaries .

A line through all points on a surface where the level of illumination is the same called isofootacandleline if illumination is expressed in foot – candles.