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If = and =, the sequence is the Fibonacci sequence, and the above formula is Binet's formula. If n = 1 , x 0 = 2 , x 1 = 1 {\displaystyle n=1,x_{0}=2,x_{1}=1} one has the Lucas numbers . If n = 2 , {\displaystyle n=2,} the metallic mean is called the silver ratio , and the elements of the sequence starting with x 0 = 0 {\displaystyle x_{0}=0 ...
Although NVQs such as NVQ Level 3 can be roughly translated as being at the same level as a GCE Advanced Level or BTEC Level 3 Extended Diploma, in terms of depth and vigor of study, the NVQ cannot be compared with other academic qualifications at the same level, i.e. GCE Advanced Levels and the BTEC Level 3 Extended Diploma (an A* at A-Level ...
The BTEC Level 3 Extended Diploma dates back to the 1930s as a full-time three-year course. After the Haselgrave Report, the Business Education Council (BEC) and Technician Education Council (TEC) took over the accrediting of this qualification (called the "Ordinary National Diploma") and others in the stable, such as the National Certificate, Higher National Certificate and Higher National ...
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The name is mostly applied informally to compositions between 20–80% gold and 80–20% silver, but these are strictly called gold or silver depending on the dominant element. Analysis of the composition of electrum in ancient Greek coinage dating from about 600 BC shows that the gold content was about 55.5% in the coinage issued by Phocaea .
The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight. [3], whereas in metal mining, stripping ratio is unitless and is expressed as weight/weight. [2] A stripping ratio can be expressed as a ratio or as a number.
In mathematics, the silver ratio is a geometrical proportion close to 70/29.Its exact value is 1 + √2, the positive solution of the equation x 2 = 2x + 1.. The name silver ratio results from analogy with the golden ratio, the positive solution of the equation x 2 = x + 1.
If k = 1, the chain reaction is critical and the neutron population will remain constant. In an infinite medium, neutrons cannot leak out of the system and the multiplication factor becomes the infinite multiplication factor, k = k ∞ {\displaystyle k=k_{\infty }} , which is approximated by the four-factor formula.