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Reactivity in cents = 100 x ( ρ / β eff ) When certain components or parameters change the reactivity of a nuclear reactor, the changes may be calculated as their reactivity worth . A control rod and a chemical reactor poison both have negative reactivity worth, while the addition of a neutron moderator would generally have a positive ...
In issue 33, Mad published a partial table of the "Potrzebie System of Weights and Measures" developed by 19-year-old Donald E. Knuth, later a famed computer scientist. According to Knuth, the basis of this new revolutionary system is the potrzebie, which equals the thickness of Mad issue 26, or 2.263 348 451 743 817 321 6473 mm. [4]
Seven distinct types of coin composition have been used over the past 200 years: three base coin alloys, two silver alloys, gold, and in recent years, platinum and palladium. The base metal coins were generally alloys of copper (for 2 cent coins and lower), and copper/nickel (for 3 and 5 cent coins). Copper/nickel composition is also used for ...
Retention of the two-cent piece was never seriously considered in the debates over what became the Mint Act of 1873; the only question concerning the minor coinage was whether to make the cent from bronze or copper-nickel, and how large to make the three-cent nickel. With those pieces remaining unchanged, the bill passed on February 12, 1873 ...
Conversion of units is the conversion of the unit of measurement in which a quantity is expressed, typically through a multiplicative conversion factor that changes the unit without changing the quantity. This is also often loosely taken to include replacement of a quantity with a corresponding quantity that describes the same physical property.
A unit prefix is a specifier or mnemonic that is added to the beginning of a unit of measurement to indicate multiples or fractions of the units. Units of various sizes are commonly formed by the use of such prefixes.
Cent (music), a logarithmic measure of relative pitch or intervals "Cent" is an informal name for 1 ⁄ 100 of a unit of measurement, as in "12 cents of an inch". Specifically, it can refer to: an alternative name for the point, a unit of mass for gemstones equal to 1 ⁄ 100 of a carat
A currency symbol or currency sign is a graphic symbol used to denote a currency unit. Usually it is defined by a monetary authority, such as the national central bank for the currency concerned.