DAGUERROTYPE
February 9, 1839 - French Academy of Science
The daguerreotype photo process was announced at the French Academy of Science. Previous photographic processes required hours of exposure, but the daguerreotype (named after its inventor Louis Daguerre) needed only a few seconds. The plate was prepared with a layer of photo-sensitive silver halide, was exposed, developed using mercury vapor, and fixed in a solution of sodium hyposulphite. The image remains delicate, and must be protected under glass against damage by touching. The daguerreotype was produced with a direct positive image, needing no intermediate negative, but thus could not yield multiple reproductions made possible by later photographic processes.
JAPANESE NUCLEAR ACCIDENT
February 9, 1991 - Mihama, Japan
Japan's worst nuclear accident up to this date happened at Mihama. A pipe in the steam generator burst, leaking 55 tonnes of radioactive primary (reactor) coolant water into the secondary steam-generating circuit. Some radioactivity was released to the atmosphere and the plant's emergency core cooling system was activated. MITI reported later that the accident was caused by human error, some anti-vibration bars being wrongly installed by workers and sawn off short to make them fit. The release of radiation into the atmosphere was kept to a small amount. No deaths resulted. Various measures were taken to prevent the recurrence of the accident, including the replacement of the steam generators.
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RANDOM QUOTES
The Revolution
by John Adams
"...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."
Rules for Happiness
by Immanuel Kant
"...Rules for Happiness: Something to do, Someone to love, Something to hope for...."
RANDOM FACTS
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.
Harvard Medical School
about Eyesight Myth and Fact
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.
Audio - Video Books :
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Category Information : Audio - Video Books
This is our Audio - Video Books category. If you are interested in Audio - Video Books, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
Is about inspiration, creativity, and the fun of being a kid. In addition to stories that we have read, we also found some great problem-solving, brain-stimulating games to play and we share links ...
Free audio books in genre Children that you can download in mp3, iPod and iTunes format for your portable audio player. Audio previews, convenient categories and excellent search functionality make...
Find the lowest prices on Las Vegas horseback tours at Vegas Horseback Tours. Choose from a wide variety of Las Vegas Horseback Tours including breakfast, lunch, dinner and overnight rides. Book yo...
Animal and Pet related classified ads listing pet and animal related products and information only. Our Classified Ads are indexed by state and city and are searchable by zip code. Search for pet r...
Horseback riding in Las Vegas. Choose from rides that include breakfast, lunch, or a sunset steak dinner. Overnight Las Vegas horseback tours also available.
Search engine is the term with which we are accustomed with very much. But the web directory is not that same. The web directories are older than search engines according to the time of their invention.
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...
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.