ID 24011 Lecture Notes - Lecture 5: Sun Path, Noon, Subtractive Color
13 Mar 2018
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Document Summary
The sun | solstice: angle of the earth= 66 degrees 33", summer | june 21 degrees, winter | december 21 degrees. Direct sunlight | equinox: northern hemisphere buildings need protection on the south face, southern hemisphere buildings need protection on the north face. Indirect daylight | direct daylight: the earth heats up from the ground, atmosphere is more dense closer to the earth so the light is less powerful as it gets closer. Color intro | sunlight vs. pigments: additive color, white, all reflected, subtractive color, black, all absorbed. The sun"s path | basics: sun path diagrams, when the sun reaches the highest point=altitude/elevation. The sun"s path | reflected radiation: direct radiation, reflected radiation. In the extremes, such as the north and south poles, during some seasons the sun does not set: the tradeoff is that they experience so many days with the sun and the rest without.
