The aerophore, an apparatus to enable a person to enter a noxious, inflammable atmosphere, was successfully tested at Chatham, 12-14 Jan 1875. Invented by Louis Denayrouze, a naval lieutenant, it comprised an air-pump, lamp, and flexible tubing*. Air in cylinders at a pressure of 300-350 lb/in2, reduced through a valve to atmospheric pressure, supported respiration. The apparatus was heavy and unmanageable for more than an hour's supply. He and Benoit Rouquayrol, a French mining engineer, had patented an underwater aerophore (1865), a steel tank filled with compressed air carried on a diver's back, connected through valves to a mouthpiece. It was the predecessor of contemporary scuba equipment.
SUBMARINE CABLE PLOW
January 12, 1937 - First transatlantic cable, U.S.A.
The first U.S. patent for a submarine cable plow was issued. It was designed to feed a cable at the same time that it would dig a trench in the ocean bed. The device could be used at depths up to a half mile. The first transatlantic cable of high-speed formally was buried on 14 Jun 1938. The inventors were Chester S. Lawton of Ridgewood, N.J., and Capt. Melville H. Bloomer of Halifax, Nova Scotia, Canada. They assigned the patent to the Western Union Telegraph Co. (No. 2,607,717).
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RANDOM QUOTES
A Change is Gonna Come
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...."
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...."
RANDOM FACTS
Cancer Facts & Figures
about Besides Lung Cancer
Besides lung cancer, tobacco use also increases the risk for cancers of the mouth, lips, nasal cavity (nose) and sinuses, larynx (voice box), pharynx (throat), esophagus (swallowing tube), stomach, pancreas, kidney, bladder, uterus, cervix, colon/rectum, ovary (mucinous), and acute myeloid leukemia.
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.
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Category Information : Communications
This is our Communications category. If you are interested in Communications, feel free to browse these listings. If you have a site that fits within this category, Submit it for inclusion.
We are well known for providing the best Bulk SMS Services include Promotional SMS Service, Transactional SMS Service, in India. We have combined cloud telephony solutions with messaging services t...
Reliable Backup Power When and Where You Need it Most. Keep Your Emergency Communications and Portable Electronic Devices Charged for Days, So You Can Stay Connected and Informed When Power Lines A...
We are the Standard Products sales branch of Myers Engineering International, Inc. a Florida licensed Professional Engineering firm specializing in Antennas, Electromagnetics and Communications Ele...
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...
Each quarter, twenty general or topical web directories are evaluated and rated according to predetermined criteria. The top ten are placed in competition with one another and ten additional direct...
Drs. Richards and Miller care for a pediatric dental practice dedicated to providing dental care, education and community service to Lake County and surrounding areas.
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.