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A variety of blade materials can be used to make the blade of a knife or other simple edged hand tool or weapon, such as a sickle, hatchet, or sword. The most common blade materials are carbon steel, stainless steel, tool steel, and alloy steel. Less common materials in blades include cobalt and titanium alloys, ceramic, obsidian, and plastic .
In cooking, a chef's knife, also known as a cook's knife, is a cutting tool used in food preparation. The chef's knife was originally designed primarily to slice and disjoint large cuts of beef. Today it is the primary general utility knife for most Western cooks. A European chef's knife generally has a blade 20 centimetres (8 inches) in length ...
In probability theory, the coupon collector's problem refers to mathematical analysis of "collect all coupons and win" contests. It asks the following question: if each box of a given product (e.g., breakfast cereals) contains a coupon, and there are n different types of coupons, what is the probability that more than t boxes need to be bought ...
The Swiss Army Knife was not the first multi-use pocket knife. In 1851, in Moby-Dick (chapter 107), Herman Melville mentions the "Sheffield contrivances, assuming the exterior – though a little swelled – of a common pocket knife; but containing, not only blades of various sizes, but also screw-drivers, cork-screws, tweezers, awls, pens, rulers, nail-filers and countersinkers."
Kitchen knife made of Carbon steel, HRC 61.5 with typical stains. Carbon steel is an alloy of iron and carbon, often including other elements such as vanadium and manganese. Carbon steel commonly used in knives has around 1.0% carbon (ex. AISI 1095), is inexpensive, and holds its edge well. Carbon steel is normally easier to resharpen than many ...
Believed to be the first coupon ever, this ticket for a free glass of Coca-Cola was first distributed in 1888 to help promote the drink. By 1913, the company had redeemed 8.5 million tickets. [6] Coca-Cola's 1888-issued "free glass of" is the earliest documented coupon. [6] [7] Coupons were mailed to potential customers and placed in magazines ...
The McDonnell Douglas F-15 Eagle is an American twin-engine, all-weather fighter aircraft designed by McDonnell Douglas (now part of Boeing ). Following reviews of proposals, the United States Air Force (USAF) selected McDonnell Douglas's design in 1969 to meet the service's need for a dedicated air superiority fighter.
All Elite Wrestling (AEW) is an American professional wrestling promotion based in Jacksonville, Florida.It is owned by father and son duo Shahid and Tony Khan, with the latter being the president and chief executive officer.