Illumination Engineering | Engineering Notes India

Factory Lighting: Installation and Maintenance | Electrical Engineering

Adequate lighting of factories is of vital importance, as it provides improved amenities for the employees, increased production and has a definite economic value in reducing accidents with their consequent loss of time and compensation payments. General Requirements and Types of Installations for Factory Lighting: A factory lighting installation, in common with other indoor equipments should provide an adequate illumination [...]

By Sushmita|2018-02-20T16:27:31+05:30February 20, 2018|Factories|Comments Off

Street Lighting: Objects, Principles and Lamps | Illumination Engineering

In this article we will discuss about:- 1. Objective of Street Lighting 2. Principles of Street Lighting 3. Types of Lamps. Objective of Street Lighting: The main objective of street lighting are: (i) To make the traffic and obstructions on the road clearly visible in order to promote safety and convenience. (ii) To make the street more attractive. (iii) To [...]

By Sushmita|2018-02-20T16:27:31+05:30February 20, 2018|Street Lighting|Comments Off

Methods Employed for Lighting Calculations | Illumination Engineering

A number of methods have been employed for lighting calculations, among which may be mentioned: 1. Watts per Square Metre Method 2. Lumen or Light Flux Method 3. Point to Point or Inverse-Square Law Method. 1. Watts per Square Metre Method: This is principally a "rule of thumb" method, very handy for rough calculation or checking. It consists in making [...]

By Sushmita|2018-02-20T16:27:31+05:30February 20, 2018|Lighting Calculations|Comments Off

Light: Nature and Sources | Illumination Engineering

Light is the prime factor in the human life as all activities of human beings ultimately depend upon the light. Where there is no natural light, use of artificial light is made. Artificial lighting produced electrically, on account of its cleanliness, ease of control, reliability, steady output, as well as its low cost, is playing an increasingly important part in [...]

By Sushmita|2018-02-20T16:27:31+05:30February 20, 2018|Illumination Engineering|Comments Off

Laws of Illumination | Illumination Engineering

There are two laws of illumination: 1. Law of Inverse Squares 2. Lambert's Cosine Law. 1. Law of Inverse Squares: If a source of light which emits light equally in all directions be placed at the centre of a hollow sphere, the light will fall uniformly on the inner surface of the sphere, that is to say, each square mm [...]

By Sushmita|2018-02-20T16:27:31+05:30February 20, 2018|Laws|Comments Off

Lamp Types: Types of Arc Lamps | Illumination Engineering

In an arc lamp electric current is made to flow through two electrodes in contact with each other which are drawn apart. The result is an arc being struck. The arc maintains the current, and is very efficient source of light. There are various forms of arc lamps such as carbon-arc, flame-arc or magnetic-arc lamps. Type # 1. Carbon-Arc Lamp: [...]