Rostfrei is not a branded word for a German knife, but it is the German descriptive word for a knife made from stainless steel. The word, when translated, means "rust-free." This type of knife, when stamped with the word "rostfrei," usually originates from a German-speaking country, such as Switzerland, or from Germany. Most of the knives originate from the German town of Solingen, and some vintage knives date to 1912.Know More
One of the knife companies that was founded in Solingen, Germany, was Wüsthof. The company, which has a history that goes back to 1814, operates as a family business with a varied line of cutlery. The company was virtually unknown in the 1960s on the North American continent when the business introduced its wares to esteemed chefs and restaurateurs in the United States.
By 1987, Wüsthof had founded the company Wüsthof-Trident of America, and it distributed knives through regional partners. Currently, the knife company operates a state-of-the-art manufacturing plant in Norwalk, Conn. The knife maker of rostfrei-type cutlery also oversees two knife plants in Solingen, Germany.
Known as the "City of Blades," Solingen is home to such cutlery companies as Dreiturm, Wüsthof, Böker and Eickhorn-Solingen. The town's image was solidified during the Medieval period when it was known for its crafting of swords.
Stainless steel Solingen knives are made for use by chefs, butchers, bakers and for household and outdoor use.Learn more about Inventions
"Play-Doh" was first invented by Noah McVicker. He was trying to make a wallpaper cleaner that could remove coal residue from walls easily. His nephew Joe discovered that the product was being used by a school to craft Christmas ornaments. By 1956, Joe had named the toy "Play-Doh" and it was being sold in places like Macy's. By 1958, the company had made $3 million.Full Answer >
Barometric pressure was discovered in about 1644 when physicist and inventor Evangelista Torricelli invented the first mercury barometer. Torricelli was an assistant to Galileo Galilei who suggested that Torricelli try using mercury in his vacuum experiments. As Torricelli experimented, he realized the height of the mercury varied from day to day because of changes in atmospheric pressure, thus discovering the principle of the barometer.Full Answer >
The history of microwave communication begins with Western Union sending the first successful microwave message between New York and Pennsylvania in 1945 and continues to the present day, according to DPS Telecom. Since the invention of fiber optic cables, microwave towers are largely only used in remote areas.Full Answer >
Although certain concepts key to the Cartesian plane are found in works as early as ancient Greece, scholars credit Rene Descartes with the critical concept of applying algebra to geometry. Descartes introduced the notion of arithmetizing analytical geometry by assigning coordinates to two points in a plane. After Descartes published his theories, other mathematicians immediately began expanding upon his ideas and developing the Cartesian plane.Full Answer >