AEROSOL SPRAY CAN The forerunner of the aerosol

AEROSOL SPRAY CAN The forerunner of the aerosol can was invented by Erik Rotheim of Norway. On November 23, 1927, Rotheim patented a can with a valve and propellant systems - it could hold and dispense liquids. The first aerosol can (a can than contains a propellant [a liquefied gas like flurocarbon] and has a spray nozzle) was invented in 1944 by Lyle David Goodloe and W. N. Sullivan. They were working for the U. S. Department of Agriculture and were trying to find a way to spray and kill malaria carrying mosquitos during World War II for the soldiers overseas. The "clog-free" spray valve was invented by Robert H. Abplanal in 1953. The first spray paint was invented by Edward H. Seymour in 1949. Seymour's wife Bonnie had given him the idea of an aerosol applicator for paint. The first spray paint he developed was aluminum colored. Seymour formed the company, Seymour of Sycamore, Inc. of Chicago, USA,

AEROSOL SPRAY CAN

GUNPOWDER Gunpowder was invented in China, probably during the 1000's. Gunpowder is composed of about 75 percent saltpeter (potassium nitrate), 15 percent powdered charcoal, and 10 percent sulphur. The Chinese used gunpower to make fireworks and signals, and later to make weapons of war.

AIRPLANE The first working airplane was invented, designed, made, and flown by the Wright brothers, Wilbur Wright (1867 -1912) and Orville Wright (1871 1948). Their "Wright Flyer" was a fabriccovered biplane with a wooden frame. The power to the two propellers was supplied by a 12 horsepower

GAYETTY, JOSEPH Joseph Gayetty invented toilet paper in 1857. His new toilet paper was composed of flat sheets. Before Gayetty's invention, people tore pages out of mail order catalogs - before catalogs were common, leaves were used. Unfortunately, Gayetty's invention failed. Walter Alcock (of Great Britain) later developed toilet paper on a roll ( instead of in flat sheets). Again, the invention failed. In 1867, Thomas, Edward and Clarence Scott (brothers from Philadelphia, Pennsylvania, USA) were successful at

ARCHIMEDES Archimedes (287 -212 BC) was a prolific ancient Greek mathematician. Archimedes invented the water screw, a device for raising water using an encased screw open at both ends. The screw is set an an angle, and as the screw turns, water fills the air pockets and is transported upwards. The Archimedes screw is still in use today. Among his many accomplishments was the first description of the lever (around 260 BC). Levers are one of the basic tools; they were probably used in prehistoric times. Many of our basic tools use levers, including scissors (two class-1 levers), pliers (two class-1 levers), hammer claws (one class-1 lever), nutcrackers (two class-2 levers), and tongs (two class-3 levers).

ARCHIMEDES

AQUALUNG The aqualung is a breathing apparatus that supplied oxygen to divers and allowed them to stay underwater for several hours. It was invented in 1943 by Jacques-Yves Cousteau (1910 -1997) and the French industrial gas control systems engineer Emile Gagnan. Among the innovations in their device was a mechanism that provided inhalation and exhaust valves at the same level. That summer, the new device was tested in the Mediterranean Sea down to 210 ft (68 m) by Cousteau, Philippe Tailliez, and Frédérik Dumas. This safe, easy-to-use, and reliable device was the first modern scuba system.

Last news The English schoolboy invented a three-dimensional mouse Schoolboy Tobias Petterson Jones (Tobias Patterson Jones) from the English city Brekon (Brecon) invented a computer manipulator which in the future, possibly, will replace a mouse. A manipulator is a glove with sensors which watch moving of hand send signals in a computer, reports BBC news. Sensors not only determine the orientation of glove in space but also watch after motions of fingers - in an order to call a glove, sufficiently simple to stir a finger. One of dignities "Mouse rukavicy" (mouse mitt), as its inventor named, there is that the hand of user will not get tired during work. To according to BBC, a manipulator, foremost, interesting to the producers of toys. His main failing while is a too large cost. In addition, a mitten is connected