DUPRENE
November 2, 1931 - Wilmington, Delaware, U.S.A.
The DuPont company, of Wilmington, Delaware, announced the first synthetic rubber. It was known as DuPrene, and from 1936 as Neoprene. Many scientists were trying to make natural rubber in the 1920s and 30s. One of the Wallace Carothers team, Gerard Berchet, had left a sample of monovinylacetylene in a jar with hydrochloric acid (HCl) for about five weeks. Then on 17 Apr 1930, coworker Arnold M. Collins happened to look in that jar and found a rubbery white material. The HCl had reacted with the vinylacetylene, making chloroprene, which then polymerized to become polychloroprene. The new rubber was expensive, but resisted oil and gasoline, which natural rubber didn't. It was the first good synthetic rubber.
COMPUTER "WORM"
November 2, 1988 - Cornell University, U.S.A.
A computer "worm" unleashed by a Cornell University graduate student, Robert T. Morris, began replicating wildly, clogging thousands of computers around the country. Intended as an experimental, self-replicating, self-propagating program, Morris soon discovered that the program was infecting machines at a much faster rate than he had anticipated. Computers were affected at many universities, military sites, and medical research facilities. When Morris realized what was happening he sent an anonymous message, instructing programmers how to kill the worm and prevent reinfection. However, because the network route was clogged, this message did not get through until it was too late. Morris, was later tried, fined and given probation.
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RANDOM QUOTES
Happiness
by Thomas Jefferson
"...Our greatest happiness does not depend on the condition of life in which chance has placed us, but is always the result of a good conscience, good health, occupation, and freedom in all just pursuits...."
All of us have a God in us
by Earth Day, Kenya
"...All of us have a God in us, and that God is the spirit that unites all life, everything that is on this planet. It must be this voice that is telling me to do something, and I am sure it'as the same voice that is speaking to everybody on this planet at least everybody who seems to be concerned about the fate of the world, the fate of this planet. Wangari Maathai-Noble Peace prize winner, Deputy Minister of Environment, founder Green Belt movement in Kenya...."
RANDOM FACTS
More vehicles
about Stolen On New Year's
More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?)
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.
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Category Information : Publishing - Printing
This is our Publishing - Printing category. If you are interested in Publishing - Printing, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
Is a small scale enterprise from Switzerland. Our main goal is to develop printing machines in co-operation with our customers, producing our durable goods in Switzerland and distribute them worldw...
A client driven, full service graphic communications company. Our core values of service and integrity have earned an excellent reputation and the respect of Fortune 500 companies, leading advertis...
We commit to delivering a shopping experience that you want to use again and again. We genuinely care about you and the product you create. The effect of our obsession over customers is visible thr...
Save on printing toner and ink costs with print management software solutions based on patent-pending pixel optimization. Calculate your printer savings ROI online. Green print management. Free tri...
Business Card Printing with multiple options including rounded corners, Spot UV etc from London based PrintedEasy.com. Special discounts for collection in person.
Is a boutique property development featuring 44 luxury private pool villas designed by award-winning architect Gary Fell – recipient of the World’s Best Architecture award at the 2011...
Offers the finest apartments in Mesa, Chandler, and Tempe areas. AZ Apartments offers a variety of options to help accommodate all of your apartment living needs. Such as, short term rentals, furni...
The site offers holiday properties for rent, including cottages, apartments, villas. Here you will find a holiday home, watch pictures of the most popular holiday cottages.
Privately owned detached self catering Menorca holiday villa for rental with private pool. Sleeps Two to Seven. Large terrace with barbeque. Situated in Son Vilar, Es Castell, and short drive to go...
Villas Spain from Club Villamar the Spanish Villas Specialists, Villas in Spain for rent including luxury villas with Private Pool in Spain on the Costa Brava, Costa Maresme and Costa Blanca.
This internet source provides valuable information about rentals available in Chisinau. You may rent here luxury apartments by day without intermediary.
Enjoy a luxury Costa Rica Rental or a beach front honeymoons villas front at Santa Teresa Costa Rica. This costa rica Vacation will be the vacation of a lifetime. At Red Palm Villas, you can get th...
All roads lead to Rome, and it's easy to see why. No history book would be complete without a chapter on Rome. It is a city so thoroughly soaked in culture and history you cannot walk more than ten meters and not run into sights you frequently see in textbooks and documentaries.
All roads lead to Rome, and it's easy to see why. No history book would be complete without a chapter on Rome. It is a city so thoroughly soaked in culture and history you cannot walk more than ten meters and not run into sights you frequently see in textbooks and documentaries.
The article is destined to people planning a trip to Minsk city. It contains some information about the culture and history of Minsk and recommendations on the choice of an apartment to stay.
Open a Citizens Bank account and discover convenient online banking features and the personal finance options that you deserve. Choose a checking account or high interest savings account that fits ...
Carvers for Conservation was started to introduce the people conserving the habitat of migratory birds to the premier bird sculptors in the world. My intention was to be mutually beneficial to the ...
Friendship poems happen to be just the best medium of expressing eternal friendship to that special friend. You can let all the love and affection you possess flow out, right onto the paper lying in front of you, through a sweet little friendship.
The course of the River Thames as we know it today was created about 10,000 years ago, by melt water from the ice-sheets that covered much of the United Kingdom during the last ice-age...