Methods of illumination
Simple Science
Methods of illumination
Artificial Lighting:
We seldom consider what life would be without our wonderful methods of illumination which turn night into day, and prolong the hours of work and pleasure. Yet it was not until the nineteenth century that the marvelous change was made from the short-lived candle to the more enduring oil lamp. Before the coming of the lamp, even in large cities like Paris, the only artificial light to guide the belated traveler at night was the candle required to be kept burning in an occasional window.
With the invention of the kerosene lamp came more efficient lighting of home and street, and with the advent of gas and electricity came a light so effective that the hours of business, manufacture, and pleasure could be extended far beyond the setting of the sun.
The production of light by candle, oil, and gas will be considered in the following paragraphs, while illumination by electricity will be reserved for a later Chapter.
Gas Engines
Weather Forecasts
Why Water does not always flow from a Faucet
Unexpected Transformations
The Value of Overtones
Matches
The Structure of the Ear
Plants as a Source of Dyes
The Inclined Plane
Molding of Glass and Forging of Iron
How Heat and Light Differ
Baking Powders
Test your English Language
Celebration of Ganesh Chaturthi
Benefits of ladys finger
New Year Wishes
Tips to get ready for xmas
Know Tie Knots
Know World Carnival




