Lighting and Acoustics Arch 353 Dr. Abdelrahman Elbakheit References اسس الانارة المعمارية, أستاذ الدكتور محمد عبد الفتاح عبيد.1 2. Architectural Lighting, M. David Egan and Victor Olgyay.

Light and Architecture: الانارة و العمارة Light allows us to experience the visual world. change in light = change of experience. ‘Architecture is the fabulous studied arrangement of masses and volumes gathered under the light ‘ Le Corbusier. Our eyes to sense these qualities and to sense colours, planes, shades and shadows. Good lighting with good distribution is therefore means proper vision, comfortable environment, good productivity and allows for good aesthetic. Natural and Artificial Lighting: الانارة الطبيعية و الصناعية examples of natural lightings:- examples of Artificial lightings:-

For maximum utilization of both Natural and Artificial Lighting: - Lighting provision through both natural and artificial light daytime. -Use large horizontal windows for a wide distribution of light and vertical narrow widows for deeper light penetration. -Benefit from roof lighting through different arrangements, e.g.. Saw tooth..etc.

Light and Illumination: الضوء والنور Light is from sources such as the Stars, e.g., the Sun, Fire, Electric lambs Illumination is lighting by reflections, e.g., the Moon. Nature of light: Electromagnetic spectrum comprises of the range of frequencies electromagnetic waves including light. Sunlight spectrum comprises of seen spectrum and unseen spectrum on both sides of it. Infra red radiation (unseen) have larger wave length than the seen spectrum. Ultra-violet on the left side of the seen spectrum has lower wave length.

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Human eyes and eye vision: العين و نعمة البصر -One of the five senses. -Acts as the window for our bodies to interact with the outside world. -Although unlike Eagles eyes in strength or unlike fish eyes underwater or cat eyes in darkness. - It completes the beauty and perfection of the creation of the human body by ALLAH Almighty. -Main functions of our eyes: -- an indicator of Health status of our bodies. i.e., Illness detection. --an indicator of Emotional or mental status of our bodies. -- to communicate, ideas, emotions, etc…

How do we see things? -an upside down image is created in the Fovea of the Retina in the eye. -this Image is then transferred to the Brain and translated there. -Seeing defects: -Hypermetropia طول النظر -Myopia قصر النظر -Colour blind? -3D vision or perception of depth:

Visual Illations : الخداع البصري

Vision field: