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Temperatures on the order of 10 9 kelvins are needed to fuse oxygen into sulfur. [11] An atomic mass of 16 was assigned to oxygen prior to the definition of the unified atomic mass unit based on 12 C. [12] Since physicists referred to 16 O only, while chemists meant the natural mix of isotopes, this led to slightly different mass scales.
[verification needed] Decimal time proposals are frequently used in fiction, often in futuristic works. In addition to decimal time, there also exist binary clocks and hexadecimal time. The Swatch Internet Time system is based on Decimal time. Many mechanical stopwatches are of the 'decimal minute' type. These split one minute into 100 units of ...
In the event that most of the echo is from first surface reflections (^ < or so), the OC radar albedo is a first-order approximation of the Fresnel reflection coefficient (aka reflectivity) [83] and can be used to estimate the bulk density of a planetary surface to a depth of a meter or so (a few wavelengths of the radar wavelength which is ...
Flammability diagram, green dotted line shows safe purging of an air-filled vessel, first with nitrogen, then with methane, to avoid the flammable region. The limiting oxygen concentration is shown in the lower right of the diagram.
The former Weights and Measures office in Seven Sisters, London (590 Seven Sisters Road). The imperial system of units, imperial system or imperial units (also known as British Imperial [1] or Exchequer Standards of 1826) is the system of units first defined in the British Weights and Measures Act 1824 and continued to be developed through a series of Weights and Measures Acts and amendments.
Like the decimal base 10, the base is a semiprime, though it is unique as the product of the only two consecutive numbers that are both prime (2 and 3). As six is a superior highly composite number , many of the arguments made in favor of the duodecimal system also apply to the senary system.
The United States dollar is fully decimal, being divided into 10 dimes, 100 cents (¢), and (for accounting purposes) 1000 mills (₥); [73] this mirrors the decimal divisions of metric units with the prefixes deci-, centi-, and milli-. Coins are currently minted in 1, 5, 10, 25, 50, and 100-cent increments. [74]
To convert integer decimals to octal, divide the original number by the largest possible power of 8 and divide the remainders by successively smaller powers of 8 until the power is 1. The octal representation is formed by the quotients, written in the order generated by the algorithm. For example, to convert 125 10 to octal: 125 = 8 2 × 1 + 61