In 1942, the American physicist Dr. Harry Coover was trying to separate the transparent plastic for optical sights portable weapons.
In the experiment, he worked with cyanoacrylate, which is tightly glued test materials. But only after 6 years, Dr. Coover realized the full potential of this substance, which does not need any pressure or heat. It was created as superglue.
Interesting fact - during the Vietnam War superglue used to arrest bleeding in open wounds. That's invention which was to improve the weapons have saved many lives.
American physicist Spencer Silver invented the glue, but the self-adhesive sheets of notes were created by Arthur Fry. In 1968, Silver was trying to create the ideal glue for paper handling, which could hold the paper on the surface, but not strong enough to be able to remove the paper without tearing it. In addition, it had to be sticky for repeated use.
True to the company where he worked Silver anyone not interested in the idea. Until Arthur Fry did not use adhesive for bonding bookmarks in the hymnal. It was he who suggested the use of a substance to create a reusable adhesive tabs. So the idea has gained popularity.
3. Inkjet printer
Engineer of Canon accidentally put red-hot soldering iron on the handle. And when the ink flowed the idea to create an ink jet printer.
Alfred Nobel discovered dynamite. When he worked on nitroglycerin, he tried to make it more stable, to avoid accidental explosions. The vial with the matter fell to the floor, where there was a lot of sawdust. Sawdust gave little stability, and the bubble burst. Nobel improved the formula by adding silica to nitroglycerin. And there was dynamite.
English chemist Robert Chezbro in 1859 noted that many oil industry workers complain of a waxy substance - "wax" that accumulate in the pipes of oil pumps. Chezbro immediately took samples of the substance and began to experiment. It turned out great petroleum jelly heals wounds and cuts. The chemist gave him the name "jelly" - (it. »Wasser» - Water and Greek. «Elaion» - oil). The range of application of Vaseline at the time was wide - from carpet cleaning to cleanse the nose. The author is so believed in the miraculous powers of Vaseline that all his life he ate a spoonful a day. He died at 96 years old.
The original purpose of Viagra - the treatment of angina. But when producing pharmaceuticals, Pfizer has studied the side effects, it is found that high blood pressure does not drop and the subjects appear excellent erection. So the company changed its kind of tests and began to explore the effects of erectile dysfunction and Viagra at her. In 1998, the Administration of Quality Supervision approved the drug, and since then many men began to celebrate life
7. Stainless steel
English metallurgist Harry Brearli tried to create a fusion of stainless steel for the production of weapons.
Stainless steel came when he mixed with 12.8% Cr 0.24% carbon. the resulting alloy was resistant even to acid of vinegar and lemon juice. Later, the inventor realized that the resulting alloy is ideal for cutlery, which were made of silver and carbon steel and gradually fell into disrepair due to corrosion.
Diethylamide of d-lysergic acid was discovered by Swiss scientist Albert Hofmann, who was trying to create a drug relieves pain during labor. This material seemed he was not remarkable, and he put it on the shelf. In 1943, while working with the material without gloves and accidentally received a large dose of the substance, he realized the true properties of the compounds. He felt "a continuous stream of fantastic pictures, extraordinary shapes with intense kaleidoscopic play of colors».
9. The teabag
The trader at the New York store, Thomas Sullivan decided that selling tea in silk bags will be much more convenient and sale of tea skyrocketed. It turned out that buyers mistakenly omitted the full bags in boiling water, and they liked the result.
In 1946, engineer Percy Spencer tested magnetron emits microwave radiation. During the tests, the chocolate melted in his pocket. Percy suggested that this was due to the magnetron and placed near the instrument corn for popcorn. Having popcorn, Spencer decided to cook an egg, but it exploded. All this led him to believe that the low-frequency energy helps to quickly cook and a year later appeared the first microwave oven.