Abstract:
The natural world presents our visual system with a wide range of colours and intensities. A starlit night has an average luminance level of around 10-3 candelas/m2, and daylight scenes are close to 105 cd/m2.
Humans can see detail in regions that vary by 1:104 at any given adaptation level, over which the eye gets swamped by stray light (i.e., disability glare) and details are lost. Modern camera lenses, even with their clean-room construction and coated optics, cannot rival human vision when it comes to low f ....etc

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Abstract:
Skylights are horizontal windows or domes placed at the roof of buildings, often used for daylighting.. skylights provide better light system and reduces electricity bill on lights, White translucent acrylic is a 'Lambertian Diffuser' meaning transmitted light is perfectly diffused and distributed evenly over affected areas. White acrylic domes provide even light distribution throughout the day. Skylights admit more light per unit area than windows, and distribute it more evenly over a space,The amount of light in ....etc

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presented by:
Dr.S.Rajkumar


Energy Efficiency and GRIHA
Why Green Building ?
 “Unknowingly, the architecture and building community is responsible for almost half of all greenhouse gas emissions annually.
 The objective is to evolve a strategy to reduce energy use in buildings so as to reduce energy costs and the emission of greenhouse gas into the earth’s atmosphere.
 “A green building is designed, constructed and operated to minimize the total environmental impacts while enhancing user co ....etc

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D. MOHAN KUMAR


Introduction
This circuit automatically turns on a night lamp when bedroom light is switched off. The lamp remains ‘on’ until the light sensor senses daylight in the morning. A super-bright white LED is used as the night lamp. It gives bright and cool light in the room. When the sensor detects the daylight in the morning, a melodious morning alarm sounds.
The circuit is powered from a standard 0-9V transformer. Diodes D1 through D4 rectify the AC voltage and the resulting DC voltage is smoothed ....etc

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ABSTRACT
Since two-three decades, hydrogen has been identified as a versatile potential fuel competent to the conventional fuel such as gasoline. In order to implement it fully and to develop the combustion based power devices which may supply much higher energy density than others, the understanding of hydrogen air combustion mechanism is very essential. In this seminars, Computational Fluid Dynamics (CFD) based numerical simulations have been performed to study the combustion of non-premixed hydrogen- ....etc

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Introduction

How many cool movies have you seen where a secret agent drives an exotic car through the mountains without any headlights? Or a low-flying AH-64 Apache pilot who moves in for a kill in pitch blackness? What about the urban legend of the 200-mile per hour (322 kilometres per hour) Lamborghini used from making covert drug runs at night, all the while escaping detection under a blanket of darkness? All of these images stem from the concept of night vision.
Perhaps the most common application for night vision is mili ....etc

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this project is for designing a Obstacle Detector , Now with video of the sensor being used as a Mintvelt inspired object tracker! This sensor is a short range obstacle detector with no dead zone. It has a reasonably narrow detection area which can be increased using the dual version. Range can also be increased by increasing the power to the IR LEDs or adding more IR LEDs

IR LED's as a light source and two phototransistors in parallel for the reciever. You could use one of each .This setup works like a FritsLDR but with IR. It has a ran ....etc

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ORINTATION OF Building
Contents
Introduction
Definition
Orientation diagram
Brief Description
Factors Affecting Orientation
Application
Designing
Introduction
Orientation of the building generally used to refer to solar orientation which is the siting of building with respect to solar access. Although any building will have different orientations for its different sides, the orientation can refer to a particular room, or to the most important facade of the building.
The building orientation can have an ....etc

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ABSTRACT
DIRECT UTILIZATION OF SOLAR ENERGY
The main modes of direct collection of solar energy like passive solar system, solar heat collectors and thermal concentrating system are discussed in detail. Common designs adopted in these modes are also explained with suitable photographs. The main designs in thermal concentrating systems like parabolic trough, parabolic dish and central receiver are discussed in detail. The advantages and the future of solar energy are also discussed in brief. A general idea about the vari ....etc

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ABSTRACT
In an era where energy conservation has become the latest topic of discussion not only among the erudite but also among the ordinary responsible denizens , fuel efficiency along with minimum pollution has become the benchmark for any new automobile.
And in the same context Hybrid Cars come as the latest addition. By the name itself it can be inferred that a hybrid car is an improvisation to the traditional gasoline engine run car combined with the power of an electr ....etc

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