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A011279 Decimal expansion of 10th root of 10. 4
1, 2, 5, 8, 9, 2, 5, 4, 1, 1, 7, 9, 4, 1, 6, 7, 2, 1, 0, 4, 2, 3, 9, 5, 4, 1, 0, 6, 3, 9, 5, 8, 0, 0, 6, 0, 6, 0, 9, 3, 6, 1, 7, 4, 0, 9, 4, 6, 6, 9, 3, 1, 0, 6, 9, 1, 0, 7, 9, 2, 3, 0, 1, 9, 5, 2, 6, 6, 4, 7, 6, 1, 5, 7, 8, 2, 5, 0, 2, 0, 2, 4, 1, 2, 1, 0, 5, 0, 9, 6, 6, 2, 7, 5, 9, 4, 6, 1, 7 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
This is the ratio of +1 dB (one decibel). Decibels are the principal way how power ratios are measured in electric and electronic engineering, acoustics, meteorology, optics and other engineering branches. Corresponding amplitude (rather than power) ratio is given by the square root of this constant (A011289). - Stanislav Sykora, Apr 02 2012
REFERENCES
Donald Fenna, A Dictionary of Weights, Measures, and Units. Oxford University Press (2002): 61.
LINKS
Wikipedia, Decibel
EXAMPLE
1.25892541179416721...
MAPLE
Digits:=100; evalf(10^(1/10)); # Wesley Ivan Hurt, Mar 26 2014
MATHEMATICA
RealDigits[10^(1/10), 10, 100][[1]] (* Alonso del Arte, Mar 22 2014 *)
PROG
(PARI) 10^.1 \\ Charles R Greathouse IV, Mar 27 2014
CROSSREFS
Cf. A011289.
Sequence in context: A250320 A250561 A131716 * A185094 A071099 A078001
KEYWORD
nonn,cons
AUTHOR
STATUS
approved

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Last modified March 19 04:26 EDT 2024. Contains 370952 sequences. (Running on oeis4.)