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    DRY-CELL PATENT
    November 15, 1887 - U.S.A.

    German scientist, Dr. Carl Gassner, was issued a U.S. patent (No. 373,064), the first in the U.S. for a "dry" cell. Gassner had already patented his invention in Germany (No. 37,758) on 8 Apr 1886, and also in Austria, Belgium, England, France and Hungary in the same year. The sealed zinc shell which contained all the chemicals was also the negative electrode. Later, he improved the shelf life of the battery by adding zinc chloride to the electrolyte to reduce corrosion of the zinc shell. Gassner's battery was much like the carbon-zinc, general-purpose batteries sold today. By 1896, the National Carbide Company (later Union Carbide and Eveready) produced the first consumer dry cell battery. Two years later, the company made the first D cell.

    ALKALINE DRY-CELL PATENT
    November 15, 1960 - U.S.A.

    A U.S. patent was issued for an alkaline dry-cell to P.A. Marsal, Karl Kordesch and Lewis F. Urry who assigned it to the Union Carbide Corporation, the manufacturer of Eveready batteries (No. 2,960,558). Compared to the existing carbon-zinc dry-cells, it offered an appreciable increase in life-span and efficiency during heavy continuous drains. Its construction used an alkaline electrolyte, manganese dioxide as depolarizer, a zinc powder-gel anode, and certain additives such including mercury and electrolyte-creep inhibitors. The patent gave practical details for commercial production. The patent claimed that whereas four cells in series of the carbon-zinc type gave 4.5 volts to power a 1.25-amp bulb for 45-min to 1-hr, the new alkaline design gave good brilliance after 6 to 7 hours.

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  • Until a man duplicates a blade of grass
    by Earth Day, Thomas Alva Edison Inventor

    "...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."
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    by Meredith Grey

    "...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."

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    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable. Drug Abuse
    about Facts about Drugs

    Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal.

A Brief History Of The Fairground Indust :

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Fairs in this country have a long and ancient history, deeply rooted in tradition. The word fair is derived from the Latin "feria", meaning a holiday and at one time the Romans were credited with the introduction of fairs.

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Fairs in this country have a long and ancient history, deeply rooted in tradition. The word fair is derived from the Latin "feria", meaning a holiday and at one time the Romans were credited with the introduction of fairs. It is now generally accepted that their origins are from pagan customs of the people who first settled this land; their seasonal gatherings held for the purposes of both trade and festivity, contained within them the essential elements of the fair. The Romans did much to promote fairs by improving trade and communications throughout the country. During the centuries following the departure of the Romans, many fairs and other festivals were incorporated into the calendar of the growing Christian Church.

Charters granted by the sovereign gave the fair legal status and an increasing importance in the economic life of the nation. Merchants and traders from Europe, the Middle East and beyond were drawn to the great chartered fairs of the Middle Ages bringing with them a wealth of goods. The sheer number of these fairs, no fewer than 4860 were chartered between the years 1200 and 1400, drew not only merchant but entertainers as well: jugglers, musicians and tumblers the ancestors of today's showmen.
The Black Death of 1348-49 brought about a new kind of fair. In order to stem the rise in wages caused by the shortage of workers, Edward III introduced the Statute of Labourers. This compelled all able bodied men to present themselves annually for hire at a stated wage.

These gathering or hiring fairs were held mainly around Michealmas, the end of the agricultural year. By the early eighteenth century the trading aspects of the charter fairs had waned and most fairs consisted almost entirely of amusements, acrobats, illusionists and theatrical companies all plied their trade on fairgrounds. Around this time the first fairground rides began to appear, small crudely constructed out of wood and propelled by gangs of boys. In 1868, Frederick Savage, a successful agricultural engineer from Kings Lynn, devised a method of driving rides by steam. His invention, a steam engine mounted in the centre of the ride was to transform the fairground industry.

Freed from the limitations of muscle power, rides could be made larger, more capacious and more heavily ornamented. The showman's demand for novelty was matched by the ingenuity of Savage and other engineers. In the wake of the steam revolution an amazing variety of new designs and rides appeared. These rides were the forerunners of today's amazing thrill rides, over time innovations such as electric lighting, electric motors, hydraulics etc. allowed rides to evolve into the amazing devices that are seen today at any local fairground.


Source : PLR

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